Polarization reconfigurable device, communication equipment and polarization reconfigurable method
阅读说明：本技术 一种极化可重构装置、通信设备以及极化重构方法 (Polarization reconfigurable device, communication equipment and polarization reconfigurable method ) 是由 黄晶晶 陈军 刘鹏 成千福 王光健 于 2019-04-24 设计创作，主要内容包括：一种极化可重构装置、通信设备及极化重构方法,以消除去极化效应对电磁波传输质量的影响。该极化可重构装置包括：依次连接的信号发生单元、信号调整单元、数模转换单元以及发射单元,发射单元中的第一端口发射的信号与第二端口发射的信号正交。信号发生单元,用于产生第一信号；信号调整单元,用于确定待发射信号的极化方式,将第一信号分成2路第一信号；根据所确定的极化方式,调整第1路第一信号的幅值和相位以及第2路第一信号的幅值和相位；数模转换单元,用于分别对调整后的第1路第一信号以及调整后的第2路第一信号进行数模转换,得到第二信号和第三信号；发射单元,用于通过第一端口发射第二信号,以及通过第二端口发射第三信号。(A polarization reconfigurable device, a communication device and a polarization reconfigurable method are provided to eliminate the influence of depolarization effect on the transmission quality of electromagnetic waves. The polarization reconfigurable device includes: the signal generating unit, the signal adjusting unit, the digital-to-analog conversion unit and the transmitting unit are sequentially connected, and a signal transmitted by a first port in the transmitting unit is orthogonal to a signal transmitted by a second port. A signal generating unit for generating a first signal; the signal adjusting unit is used for determining the polarization mode of a signal to be transmitted and dividing the first signal into 2 paths of first signals; adjusting the amplitude and the phase of the 1 st path of first signal and the amplitude and the phase of the 2 nd path of first signal according to the determined polarization mode; the digital-to-analog conversion unit is used for respectively carrying out digital-to-analog conversion on the adjusted 1 st path of first signal and the adjusted 2 nd path of first signal to obtain a second signal and a third signal; and the transmitting unit is used for transmitting the second signal through the first port and transmitting the third signal through the second port.)
1. A polarization reconfigurable apparatus, comprising: the device comprises a signal generating unit, a signal adjusting unit, a digital-to-analog conversion unit and a transmitting unit which are connected in sequence; the transmitting unit comprises a first port and a second port, and signals transmitted by the first port are orthogonal to signals transmitted by the second port;
the signal generating unit is used for generating a first signal;
The signal adjusting unit is used for determining the polarization mode of the signal to be transmitted, wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; splitting the first signal into 2 first signals; adjusting the amplitude and the phase of the 1 st path of first signal and the amplitude and the phase of the 2 nd path of first signal according to the determined polarization mode;
the digital-to-analog conversion unit is used for performing digital-to-analog conversion on the adjusted 1 st path of first signal to obtain a second signal, and performing digital-to-analog conversion on the adjusted 2 nd path of first signal to obtain a third signal;
the transmitting unit is configured to transmit the second signal through the first port and transmit the third signal through the second port, where the signal to be transmitted is obtained by synthesizing the second signal and the third signal.
2. The apparatus of claim 1, comprising: the N transmitting units, the N digital-to-analog converting units which are in one-to-one correspondence with the N transmitting units and the N signal adjusting units which are in one-to-one correspondence with the N digital-to-analog converting units are arranged, wherein N is an integer greater than or equal to 2;
the phase difference of the adjusted 1 st path first signals obtained by any two adjacent signal adjusting units is theta, and the phase difference of the adjusted 2 nd path first signals obtained by any two adjacent signal adjusting units is theta; and determining theta according to the beam direction of the signal to be transmitted.
3. The apparatus of claim 2, wherein the transmit unit comprises a dual polarized antenna comprising the first port and the second port;
when the N dual-polarized antennas in the N transmitting units form a linear array with equal spacing, the theta satisfies the following formula:
wherein k is the wave number of the carrier for carrying the signal to be transmitted, d is the distance between two adjacent dual-polarized antennas, an
4. A device according to any one of claims 1 to 3, wherein when the polarisation mode is at an angle γ1In the linear polarization of (1), the ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal is | tan γ 1|, and the difference between the phase of the adjusted 1 st path first signal and the phase of the adjusted 2 nd path first signal is an integral multiple of 180 °;
wherein, said γ is1The included angle between the direction of the electric field of the signal to be transmitted and the horizontal direction is in a plane vertical to the propagation direction of the signal to be transmitted.
5. The apparatus according to any one of claims 1 to 3, wherein when the polarization mode is circular polarization, the ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal is 1, and the difference between the phase of the adjusted 1 st path first signal and the phase of the adjusted 2 nd path first signal is an odd multiple of 90 °.
6. The apparatus according to any one of claims 1-3, wherein when the polarization mode is elliptical polarization, the ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal, and the difference between the phase of the adjusted 1 st path first signal and the phase of the adjusted 2 nd path first signal are determined according to the ratio of the major axis to the minor axis of the ellipse corresponding to the elliptical polarization mode and γ2Determining;
wherein, said γ is2The long axis is in a plane vertical to the propagation direction of the signal to be transmitted and forms an included angle with the horizontal direction.
7. A communication device comprising a memory and a processor;
the memory stores code instructions;
the processor is used for calling the code instructions stored by the memory and executing: generating a first signal; determining a polarization mode of a signal to be transmitted, wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; dividing the first signal into 2N paths of first signals, wherein N is a positive integer; adjusting the amplitude and the phase of the 2i-1 path of first signal and the amplitude and the phase of the 2i path of first signal according to the determined polarization mode, wherein i is 1.. N; and performing digital-to-analog conversion on the adjusted 2i-1 path first signal to obtain a 2i-1 path second signal, and performing digital-to-analog conversion on the adjusted 2i path first signal to obtain a 2i path third signal.
8. The apparatus of claim 7, wherein when N is greater than 1, the phase difference between the adjusted 2i-1 st signal and the adjusted 2i +1 st signal is θ, and the phase difference between the adjusted 2i first signal and the adjusted 2i +2 nd signal is θ; and determining theta according to the beam direction of the signal to be transmitted.
9. A polarization reconstruction method is applied to a communication device, the communication device comprises 2N ports, signals transmitted by 2i-1 st ports are orthogonal to signals transmitted by 2i ports, i is 1, and. The method comprises the following steps:
generating a first signal;
determining the polarization mode of a signal to be transmitted; wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization;
dividing the first signal into 2N first signals; according to the determined polarization mode, adjusting the amplitude and the phase of the 2i-1 path of first signal and the amplitude and the phase of the 2i path of first signal;
performing digital-to-analog conversion on the adjusted 2i-1 path first signal to obtain a 2i-1 path second signal, and performing digital-to-analog conversion on the adjusted 2i path first signal to obtain a 2i path third signal;
And transmitting the 2i-1 path of second signal through the 2i-1 port, and transmitting the 2i path of third signal through the 2i path of port.
10. The method of claim 9, wherein when N is greater than 1, the adjusted 2i-1 st first signal is out of phase with the adjusted 2i first signal by θ; and determining theta according to the beam direction of the signal to be transmitted.
11. The method of claim 10, wherein said communication device comprises N dual-polarized antennas, an ith said dual-polarized antenna comprising said 2i-1 th port and said 2 i-th port;
when N dual-polarized antennas form a linear array with equal spacing, theta satisfies the following formula:
wherein k is the wave number of the carrier for carrying the signal to be transmitted, d is the distance between two adjacent dual-polarized antennas, an
12. A method according to any of claims 9 to 11, wherein when the polarisation mode is at an angle γ1In the linear polarization of (1), the ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal is | tan γ 1|, and the difference between the phase of the adjusted 1 st path first signal and the phase of the adjusted 2 nd path first signal is an integral multiple of 180 °;
Wherein, said γ is1The included angle between the direction of the electric field of the signal to be transmitted and the horizontal direction is in a plane vertical to the propagation direction of the signal to be transmitted.
13. The method according to any one of claims 9 to 11, wherein when the polarization mode is circular polarization, a ratio of an amplitude of the adjusted 2i-1 th first signal to an amplitude of the adjusted 2 i-th first signal is 1, and a difference between a phase of the adjusted 2i-1 th first signal and a phase of the adjusted 2 i-th first signal is an odd multiple of 90 °.
14. The method according to any one of claims 9 to 11, wherein when the polarization mode is elliptical polarization, a ratio of an amplitude of the adjusted 2i-1 th path first signal to an amplitude of the adjusted 2 i-th path first signal, and a difference between a phase of the adjusted 2i-1 th path first signal and a phase of the adjusted 2 i-th path first signal are determined according to a ratio of a major axis to a minor axis of an ellipse corresponding to the elliptical polarization mode and γ2Determining;
wherein, said γ is2The long axis is in a plane vertical to the propagation direction of the signal to be transmitted and forms an included angle with the horizontal direction.
15. A polarization reconfigurable apparatus, comprising: the device comprises a signal generating unit, a signal adjusting unit, a digital-to-analog conversion unit and a transmitting unit which are connected in sequence; the receiving unit comprises a first port and a second port, and signals received by the first port are orthogonal to signals received by the second port;
the signal generating unit is used for generating a first signal and a second signal;
the signal adjusting unit is configured to determine polarization modes of 2 paths of signals to be transmitted, respectively, where the polarization mode of the 1 st path of signals to be transmitted includes linear polarization, circular polarization, and elliptical polarization, and the polarization mode of the 2 nd path of signals to be transmitted includes linear polarization, circular polarization, and elliptical polarization; dividing the first signal into 2 paths of first signals, and dividing the second signal into 2 paths of second signals; respectively adjusting the amplitude and the phase of the 1 st path of first signal and the amplitude and the phase of the 2 nd path of first signal according to the polarization mode of the 1 st path of signal to be transmitted; respectively adjusting the amplitude and the phase of the 1 st path of second signal and the amplitude and the phase of the 2 nd path of second signal according to the polarization mode of the 2 nd path of signal to be transmitted; synthesizing the adjusted 1 st path first signal and the adjusted 1 st path second signal into a third signal, and synthesizing the adjusted 2 nd path first signal and the adjusted 2 nd path second signal into a fourth signal;
The digital-to-analog conversion unit is used for performing digital-to-analog conversion on the third signal to obtain a fifth signal and performing digital-to-analog conversion on the fourth signal to obtain a sixth signal;
the transmitting unit is configured to transmit the fifth signal through the first port and transmit the sixth signal through the second port.
16. The apparatus of claim 15, wherein when the apparatus includes 1 of the transmitting units, a polarization of the 1 st signal to be transmitted is orthogonal to a polarization of the 2 nd signal to be transmitted.
17. The apparatus of claim 16, wherein when the polarization of the to-be-transmitted 1 st signal is horizontal linear polarization and the polarization of the to-be-transmitted 2 nd signal is vertical linear polarization, a ratio of an amplitude a1 of the adjusted 1 st signal to an amplitude B1 of the adjusted 2 nd signal, a phase of the adjusted 1 st signal being a difference between α 1 and a phase β 1 of the adjusted 2 nd signal satisfies the following condition:
α1-β1＝θVV-θHV+n*180°
wherein A isVVIs the amplitude, theta, of the vertical linear polarization reference signal received by the first port of the receiving end VVIs the phase of the vertical linear polarization reference signal received by the first port of the receiving end, AHVIs the amplitude value theta of the horizontal linear polarization reference signal received by the first port of the receiving endHVThe phase of a horizontal linear polarization reference signal received by a first port of the receiving end is determined, n is an odd number, the first port of the receiving end is used for receiving a vertical linear polarization signal, the vertical linear polarization reference signal and the horizontal linear polarization reference signal are reference signals sent by the device, and the receiving end is used for receiving a 1 st path signal to be transmitted and a2 nd path signal to be transmitted;
the ratio of the amplitude A2 of the adjusted 1 st path second signal to the amplitude B2 of the adjusted 2 nd path second signal, the phase of the adjusted 1 st path second signal is the difference between alpha 2 and the phase beta 2 of the adjusted 2 nd path second signal, and the following conditions are satisfied:
α2-β2＝θVH-θHH+m*180°
wherein A isVHIs the amplitude, theta, of the vertical linear polarization reference signal received by the second port of the receiving endVHIs the phase of the vertical linear polarization reference signal received by the second port of the receiving end, AHHIs the amplitude, theta, of the horizontal linear polarization reference signal received by the second port of the receiving end HHM is an odd number, and the second port of the receiving end is used for receiving a horizontal linear polarization signal.
18. The apparatus of claim 15, comprising: the N transmitting units, the N digital-to-analog converting units which are in one-to-one correspondence with the N transmitting units and the N signal adjusting units which are in one-to-one correspondence with the N digital-to-analog converting units are arranged, wherein N is an integer which is greater than or equal to 2;
the phase difference of the adjusted 1 st path first signals obtained by any two adjacent signal adjusting units is theta 1, and the phase difference of the adjusted 2 nd path first signals obtained by any two adjacent signal adjusting units is theta 1; determining theta 1 according to the beam direction of the 1 st path of signal to be transmitted;
the phase difference of the adjusted 1 st path second signals obtained by any two adjacent signal adjusting units is theta 2, and the phase difference of the adjusted 2 nd path second signals obtained by any two adjacent signal adjusting units is theta 2; and determining theta 2 according to the beam direction of the 2 nd path of signal to be transmitted.
19. The apparatus of claim 18, wherein the transmit unit comprises a dual polarized antenna comprising the first port and the second port;
When the N dual-polarized antennas in the N transmitting units form a linear array with equal spacing, θ 1 and θ 2 respectively satisfy the following formulas:
wherein k1 is the wave number of the carrier carrying the 1 st path signal to be transmitted, d is the distance between two adjacent dual-polarized antennas,the included angle between the beam direction of the 1 st path signal to be transmitted and the normal direction of the linear array is defined, k2 is the wave number for bearing the 2 nd path signal to be transmitted,and forming an included angle between the beam direction of the 2 nd path signal to be transmitted and the normal direction of the linear array.
20. A communication device, wherein the communication device is a first communication device comprising a memory and a processor;
the memory stores code instructions;
the processor is used for calling the code instructions stored by the memory and executing: generating a first signal and a second signal; respectively determining the polarization modes of 2 paths of signals to be transmitted, wherein the polarization mode of the 1 st path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization, and the polarization mode of the 2 nd path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization; dividing the first signal into 2N paths of first signals, and dividing the second signal into 2N paths of second signals, wherein N is a positive integer; according to the polarization mode of a 1 st path of signal to be transmitted, adjusting the amplitude and the phase of a 2i-1 th path of first signal and the amplitude and the phase of a 2i-1 th path of first signal respectively, wherein i is 1. Respectively adjusting the amplitude and the phase of the 2i-1 path of second signal and the amplitude and the phase of the 2i path of second signal according to the polarization mode of the 2 nd path of signal to be transmitted; synthesizing the adjusted 2i-1 th path first signal and the adjusted 2i-1 th path second signal into an i-th path third signal, and synthesizing the adjusted 2 i-th path first signal and the adjusted 2 i-th path second signal into an i-th path fourth signal; and performing digital-to-analog conversion on the ith path of third signal to obtain an ith path of fifth signal, and performing digital-to-analog conversion on the ith path of fourth signal to obtain an ith path of sixth signal.
21. The device of claim 20, wherein when N-1, the polarization of the 1 st signal to be transmitted is orthogonal to the polarization of the 2 nd signal to be transmitted.
22. The apparatus of claim 20, wherein when the polarization of the to-be-transmitted 1 st signal is horizontal linear polarization and the polarization of the to-be-transmitted 2 nd signal is vertical linear polarization, a ratio of an amplitude a1 of the adjusted 1 st signal to an amplitude B1 of the adjusted 2 nd signal, a phase of the adjusted 1 st signal being a difference between α 1 and a phase β 1 of the adjusted 2 nd signal satisfies the following condition:
α1-β1＝θVV-θHV+n*180°
wherein A isVVIs the amplitude, theta, of the vertically linearly polarized reference signal received by the first port of the second communication deviceVVIs the phase of the vertical linear polarization reference signal received by the first port of the second communication device, AHVIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the first port of the second communication deviceHVReceiving for the first port of the second communication deviceA first port of the second communication device is configured to receive a vertical linear polarization signal, where the vertical linear polarization reference signal and the horizontal linear polarization reference signal are reference signals sent by the first communication device, and the second communication device is configured to receive a1 st path signal to be transmitted and a 2 nd path signal to be transmitted;
The ratio of the amplitude A2 of the adjusted 1 st path second signal to the amplitude B2 of the adjusted 2 nd path second signal, the phase of the adjusted 1 st path second signal is the difference between alpha 2 and the phase beta 2 of the adjusted 2 nd path second signal, and the following conditions are satisfied:
α2-β2＝θVH-θHH+m*180°
wherein A isVHIs the amplitude, theta, of the vertical linear polarization reference signal received by the second port of the second communication deviceVHIs the phase of the vertical linear polarization reference signal received by the second port of the second communication device, AHHIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the second port of the second communication deviceHHM is an odd number, which is a phase of a horizontal linear polarization reference signal received by the second port of the second communication device, and the second port of the second communication device is configured to receive a horizontal linear polarization signal.
23. The apparatus of claim 20, wherein when N is greater than 1, the adjusted 2i-1 st signal is out of phase with the adjusted 2i first signal by θ 1; determining theta 1 according to the beam direction of the 1 st path of signal to be transmitted;
the phase difference between the adjusted 2i-1 th path of second signal and the adjusted 2i th path of second signal is theta 2; and determining theta 2 according to the beam direction of the 2 nd path of signal to be transmitted.
24. A polarization reconstruction method is applied to a first communication device, wherein the first communication device comprises 2N ports, signals transmitted by 2i-1 th ports are orthogonal to signals transmitted by 2i ports, i is 1.. N, N is a positive integer; the method comprises the following steps:
generating a first signal and a second signal;
respectively determining the polarization modes of 2 paths of signals to be transmitted, wherein the polarization mode of the 1 st path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization, and the polarization mode of the 2 nd path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization;
dividing the first signal into 2N paths of first signals, and dividing the second signal into 2N paths of second signals;
respectively adjusting the amplitude and the phase of the 2i-1 path of first signal and the amplitude and the phase of the 2i path of first signal according to the polarization mode of the 1 path of signal to be transmitted;
respectively adjusting the amplitude and the phase of the 2i-1 path of second signal and the amplitude and the phase of the 2i path of second signal according to the polarization mode of the 2 nd path of signal to be transmitted;
synthesizing the adjusted 2i-1 th path first signal and the adjusted 2i-1 th path second signal into an i-th path third signal, and synthesizing the adjusted 2 i-th path first signal and the adjusted 2 i-th path second signal into an i-th path fourth signal;
Performing digital-to-analog conversion on the ith path of third signal to obtain an ith path of fifth signal, and performing digital-to-analog conversion on the ith path of fourth signal to obtain an ith path of sixth signal;
and transmitting the ith path of fifth signal through the 2i-1 th port, and transmitting the ith path of sixth signal through the 2i th port.
25. The method of claim 24, wherein when N-1, the polarization of the 1 st signal to be transmitted is orthogonal to the polarization of the 2 nd signal to be transmitted.
26. The method of claim 24, wherein when the polarization of the to-be-transmitted 1 st signal is horizontal linear polarization and the polarization of the to-be-transmitted 2 nd signal is vertical linear polarization, a ratio of an amplitude a1 of the adjusted 1 st signal to an amplitude B1 of the adjusted 2 nd signal, a phase of the adjusted 1 st signal being a difference between α 1 and a phase β 1 of the adjusted 2 nd signal satisfies the following condition:
α1-β1＝θVV-θHV+n*180°
wherein A isVVIs the amplitude, theta, of the vertically linearly polarized reference signal received by the first port of the second communication deviceVVIs the phase of the vertical linear polarization reference signal received by the first port of the second communication device, A HVIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the first port of the second communication deviceHVThe phase of a horizontal linear polarization reference signal received by a first port of the second communication device is n is an odd number, the first port of the second communication device is used for receiving a vertical linear polarization signal, the vertical linear polarization reference signal and the horizontal linear polarization reference signal are reference signals sent by the first communication device, and the second communication device is used for receiving a 1 st path signal to be transmitted and a2 nd path signal to be transmitted;
the ratio of the amplitude A2 of the adjusted 1 st path second signal to the amplitude B2 of the adjusted 2 nd path second signal, the phase of the adjusted 1 st path second signal is the difference between alpha 2 and the phase beta 2 of the adjusted 2 nd path second signal, and the following conditions are satisfied:
α2-β2＝θVH-θHH+m*180°
wherein A isVHIs the amplitude, theta, of the vertical linear polarization reference signal received by the second port of the second communication deviceVHIs the phase of the vertical linear polarization reference signal received by the second port of the second communication device, AHHIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the second port of the second communication device HHM is an odd number, which is a phase of a horizontal linear polarization reference signal received by the second port of the second communication device, and the second port of the second communication device is configured to receive a horizontal linear polarization signal.
27. The method of claim 24, wherein when N is greater than 1, the adjusted 2i-1 st signal is out of phase with the adjusted 2i first signal by θ 1; determining theta 1 according to the beam direction of the 1 st path of signal to be transmitted;
the phase difference between the adjusted 2i-1 th path of second signal and the adjusted 2i th path of second signal is theta 2; and determining theta 2 according to the beam direction of the 2 nd path of signal to be transmitted.
Technical Field
The present application relates to the field of wireless communication technologies, and in particular, to a polarization reconfigurable device, a communication device, and a polarization reconfigurable method.
Background
The polarization of electromagnetic wave refers to the motion trail of the end space of the electric field vector in the electromagnetic wave, and the control of the polarization of the electromagnetic wave is an important component of the electromagnetic wave space propagation research. The polarization characteristic of electromagnetic waves is widely applied to the fields of satellite communication, radar reception anti-interference, aerospace and the like.
When a polarized electromagnetic wave propagates in free space, due to the complexity of the space environment, scattering, refraction, diffraction, etc. occur, thereby changing the polarization direction of the electromagnetic wave and causing polarization plane deflection, which is called depolarization (depolarization). Depolarization can cause polarization mismatch between the transmitting end and the receiving end, which further causes the reduction of the signal-to-noise ratio of the received signal and reduces the receiving efficiency.
Disclosure of Invention
The application provides a polarization reconfigurable device, communication equipment and a polarization reconfigurable method, which are used for eliminating the influence of depolarization effect on the transmission quality of electromagnetic waves.
In a first aspect, the present application provides a polarization reconfigurable apparatus comprising: the device comprises a signal generating unit, a signal adjusting unit, a digital-to-analog conversion unit and a transmitting unit which are sequentially connected, wherein the transmitting unit comprises a first port and a second port, and signals transmitted by the first port are orthogonal to signals transmitted by the second port. The signal generating unit is used for generating a first signal; the signal adjusting unit is used for determining the polarization mode of the signal to be transmitted, wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; splitting the first signal into 2 first signals; adjusting the amplitude and the phase of the 1 st path of first signal and the amplitude and the phase of the 2 nd path of first signal according to the determined polarization mode; the digital-to-analog conversion unit is used for performing digital-to-analog conversion on the adjusted 1 st path of first signal to obtain a second signal, and performing digital-to-analog conversion on the adjusted 2 nd path of first signal to obtain a third signal; the transmitting unit is configured to transmit the second signal through the first port and transmit the third signal through the second port, where the signal to be transmitted is obtained by synthesizing the second signal and the third signal.
By the scheme, the polarization reconfigurable device can perform polarization reconfiguration in a digital domain according to the polarization mode of the signal to be transmitted, the amplitude and phase adjustment precision of the signal are high, the polarization reconfiguration precision and flexibility are improved, the problem that the polarization mode of a transmitting end is not matched with that of a receiving end due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal-to-noise ratio of the signal received by the receiving end can be improved.
In one possible embodiment, the polarization reconfigurable device comprises: the digital-to-analog conversion unit comprises N transmitting units, N digital-to-analog conversion units corresponding to the N transmitting units one by one, and N signal adjusting units corresponding to the N digital-to-analog conversion units one by one, wherein N is an integer greater than or equal to 2. The phase difference of the adjusted 1 st path first signal obtained by any two adjacent signal adjusting units is theta, and the phase difference of the adjusted 2 nd path first signal obtained by any two adjacent signal adjusting units is theta; and determining theta according to the beam direction of the signal to be transmitted.
Through the scheme, the polarization reconfigurable device can adjust the amplitude and the phase of the signal through 2N independent channels, and control the beam direction of the signal to be transmitted is realized.
In one possible embodiment, the transmitting unit comprises a dual polarized antenna comprising the first port and the second port. When the N dual-polarized antennas in the N transmitting units form a linear array with equal spacing, the theta satisfies the following formula:
wherein k is the wave number of the carrier for carrying the signal to be transmitted, d is the distance between two adjacent dual-polarized antennas, anAnd forming an included angle between the beam direction of the signal to be transmitted and the normal direction of the linear array.
In one possible embodiment, when the polarization mode is linear polarization with an
In a possible embodiment, when the polarization mode is circular polarization, a ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal is 1, and a difference between the phase of the adjusted 1 st path first signal and the phase of the adjusted 2 nd path first signal is an odd multiple of 90 °.
In a possible embodiment, when the polarization mode is elliptical polarization, a ratio of an amplitude of the adjusted 1 st path first signal to an amplitude of the adjusted 2 nd path first signal, and a difference between a phase of the adjusted 1 st path first signal and a phase of the adjusted 2 nd path first signal are determined according to a ratio of a major axis to a minor axis of an ellipse corresponding to the elliptical polarization mode and
wherein
In a second aspect, the present application also provides a communication device comprising a memory and a processor and a transceiver. Wherein the memory stores code instructions; the processor is used for calling the code instructions stored by the memory and executing: generating a first signal; determining a polarization mode of a signal to be transmitted, wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; dividing the first signal into 2N paths of first signals, wherein N is a positive integer; adjusting the amplitude and the phase of the 2i-1 path of first signal and the amplitude and the phase of the 2i path of first signal according to the determined polarization mode, wherein i is 1.. N; and performing digital-to-analog conversion on the adjusted 2i-1 path first signal to obtain a 2i-1 path second signal, and performing digital-to-analog conversion on the adjusted 2i path first signal to obtain a 2i path third signal.
By the scheme, the communication equipment can perform polarization reconstruction in a digital domain according to the polarization mode of the signal to be transmitted, the amplitude and the phase adjustment precision of the signal are high, the polarization reconstruction precision and the flexibility are improved, the problem that the polarization mode of a transmitting end and the polarization mode of a receiving end are not matched due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal to noise ratio of the signal received by the receiving end can be improved.
In one possible implementation, the 2i-1 st second signal is transmitted through a 2i-1 st port of a transceiver in the communication device, and the 2i-1 nd third signal is transmitted through a 2 i-th port of the transceiver in the communication device, where the signal transmitted by the 2i-1 st port is orthogonal to the signal transmitted by the 2 i-th port.
In one possible embodiment, when N is greater than 1, the phase difference between the adjusted 2i-1 th first signal and the adjusted 2i +1 th first signal is θ, and the phase difference between the adjusted 2 i-th first signal and the adjusted 2i +2 th first signal is θ. And determining theta according to the beam direction of the signal to be transmitted.
By the scheme, the communication equipment can realize the control of the beam direction of the signal to be transmitted while realizing polarization reconstruction.
In one possible implementation, in a scenario where a transceiver in the communication device includes N dual-polarized antennas, an ith dual-polarized antenna includes the 2i-1 st port and the 2i th port, when the N dual-polarized antennas form a linear array with equal spacing, θ satisfies the following formula:
wherein k is the wave number of the carrier for carrying the signal to be transmitted, d is the distance between two adjacent dual-polarized antennas, anAnd forming an included angle between the beam direction of the signal to be transmitted and the normal direction of the linear array.
In one possible embodiment, when the polarization mode is an angle γ1In the linear polarization of (1), the ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal is |
In a possible embodiment, when the polarization mode is circular polarization, a ratio of the amplitude of the adjusted 2i-1 th first signal to the amplitude of the adjusted 2i-1 th first signal is 1, and a difference between the phase of the adjusted 2i-1 th first signal and the phase of the adjusted 2i-1 th first signal is an odd multiple of 90 °.
In a possible embodiment, when the polarization mode is elliptical polarization, a ratio of an amplitude of the adjusted 2i-1 th path first signal to an amplitude of the adjusted 2i-1 th path first signal, and a difference between a phase of the adjusted 2i-1 th path first signal and a phase of the adjusted 2i-1 th path first signal are based on the elliptical polarizationRatio of major axis to minor axis of ellipse and gamma2And (4) determining. Wherein, said γ is2The long axis is in a plane vertical to the propagation direction of the signal to be transmitted and forms an included angle with the horizontal direction.
In a third aspect, an embodiment of the present application further provides a polarization reconstruction method, which is applied to a communication device, where the communication device includes 2N ports, a signal transmitted by a 2i-1 st port is orthogonal to a signal transmitted by a 2 i-th port, and i ═ 1.. N, where N is a positive integer. The method comprises the following steps: generating a first signal; determining the polarization mode of a signal to be transmitted; wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; dividing the first signal into 2N first signals; according to the determined polarization mode, adjusting the amplitude and the phase of the 2i-1 path of first signal and the amplitude and the phase of the 2i path of first signal; performing digital-to-analog conversion on the adjusted 2i-1 path first signal to obtain a 2i-1 path second signal, and performing digital-to-analog conversion on the adjusted 2i path first signal to obtain a 2i path third signal; and transmitting the 2i-1 path of second signal through the 2i-1 port, and transmitting the 2i path of third signal through the 2i path of port.
By the scheme, the communication equipment can perform polarization reconstruction in a digital domain according to the polarization mode of the signal to be transmitted, the amplitude and the phase adjustment precision of the signal are high, the polarization reconstruction precision and the flexibility are improved, the problem that the polarization mode of a transmitting end and the polarization mode of a receiving end are not matched due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal to noise ratio of the signal received by the receiving end can be improved.
In one possible embodiment, when N is greater than 1, the phase difference between the adjusted 2i-1 th first signal and the adjusted 2 i-th first signal is θ; and determining theta according to the beam direction of the signal to be transmitted.
By the scheme, the communication equipment can realize the control of the beam direction of the signal to be transmitted while realizing polarization reconstruction.
In one possible embodiment, said communication device comprises N dual-polarized antennas, an ith of said dual-polarized antennas comprising said 2i-1 th port and said 2i th port;
when N dual-polarized antennas form a linear array with equal spacing, theta satisfies the following formula:
wherein k is the wave number of the carrier for carrying the signal to be transmitted, d is the distance between two adjacent dual-polarized antennas, an And forming an included angle between the beam direction of the signal to be transmitted and the normal direction of the linear array.
In one possible embodiment, when the polarization mode is an angle γ1In the linear polarization of (1), the ratio of the amplitude of the adjusted 1 st path first signal to the amplitude of the adjusted 2 nd path first signal is |
In a possible embodiment, when the polarization mode is circular polarization, a ratio of the amplitude of the adjusted 2i-1 th first signal to the amplitude of the adjusted 2i-1 th first signal is 1, and a difference between the phase of the adjusted 2i-1 th first signal and the phase of the adjusted 2i-1 th first signal is an odd multiple of 90 °.
In a possible embodiment, when the polarization mode is elliptical polarization, a ratio of an amplitude of the adjusted 2i-1 th path first signal to an amplitude of the adjusted 2i-1 th path first signal, and a difference between a phase of the adjusted 2i-1 th path first signal and a phase of the adjusted 2i-1 th path first signal are according to a corresponding elliptical polarization mode Ratio of major axis to minor axis of ellipse and gamma2And (4) determining. Wherein, said γ is2The long axis is in a plane vertical to the propagation direction of the signal to be transmitted and forms an included angle with the horizontal direction.
In a fourth aspect, the present application further provides a polarization reconfigurable apparatus, comprising: the receiving unit comprises a first port and a second port, and signals received by the first port are orthogonal to signals received by the second port. The signal generating unit is used for generating a first signal and a second signal; the signal adjusting unit is configured to determine polarization modes of 2 paths of signals to be transmitted, respectively, where the polarization mode of the 1 st path of signals to be transmitted includes linear polarization, circular polarization, and elliptical polarization, and the polarization mode of the 2 nd path of signals to be transmitted includes linear polarization, circular polarization, and elliptical polarization; dividing the first signal into 2 paths of first signals, and dividing the second signal into 2 paths of second signals; respectively adjusting the amplitude and the phase of the 1 st path of first signal and the amplitude and the phase of the 2 nd path of first signal according to the polarization mode of the 1 st path of signal to be transmitted; respectively adjusting the amplitude and the phase of the 1 st path of second signal and the amplitude and the phase of the 2 nd path of second signal according to the polarization mode of the 2 nd path of signal to be transmitted; synthesizing the adjusted 1 st path first signal and the adjusted 1 st path second signal into a third signal, and synthesizing the adjusted 2 nd path first signal and the adjusted 2 nd path second signal into a fourth signal; the digital-to-analog conversion unit is used for performing digital-to-analog conversion on the third signal to obtain a fifth signal and performing digital-to-analog conversion on the fourth signal to obtain a sixth signal; the transmitting unit is configured to transmit the fifth signal through the first port and transmit the sixth signal through the second port.
By the scheme, the polarization reconfigurable device can perform polarization reconfiguration in a digital domain according to the polarization mode of the received signal, the amplitude and phase adjustment precision of the signal are high, the polarization reconfiguration precision and flexibility are improved, the problem that the polarization mode of a sending end is not matched with that of a receiving end due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal-to-noise ratio of the signal received by the receiving end can be improved.
In a possible implementation, when the apparatus includes 1 transmitting unit, the polarization of the 1 st path to be transmitted is orthogonal to the polarization of the 2 nd path to be transmitted.
In a possible implementation manner, the polarization manner of the to-
In a possible embodiment, when the polarization mode of the 1 st path signal to be transmitted is vertical linear polarization, the amplitude a1 of the adjusted 1 st path first signal is 0 (the
When the polarization mode of the 1 st path of signal to be transmitted is horizontal linear polarization, the amplitude a1 and the
When the polarization mode of the to-be-transmitted 1-path signal is + 45-degree linear polarization, the ratio of A1/B1 between the amplitude A1 of the adjusted 1-path first signal and the amplitude B1 of the adjusted 2-path first signal is 1, the difference alpha 1-
When the polarization mode of the to-be-transmitted 1-path signal is-45-degree linear polarization, the ratio of A1/B1 between the amplitude A1 of the adjusted 1-path first signal and the amplitude B1 of the adjusted 2-path first signal is 1, the difference alpha 1-
When the polarization mode of the to-be-transmitted 1 st path signal is left-hand circular polarization, the ratio of the amplitude A1 of the adjusted 1 st path first signal to the amplitude A1/B1 of the adjusted 2 nd path first signal B1 is 1, the difference alpha 1-
When the polarization mode of the to-be-transmitted 1 st path signal is right-hand circular polarization, the ratio of the amplitude A1 of the adjusted 1 st path first signal to the amplitude A1/B1 of the adjusted 2 nd path first signal to the amplitude B1 of the adjusted 2 nd path first signal is 1, the difference alpha 1-
In a possible embodiment, when the polarization mode of the to-be-transmitted 1 st signal is horizontal linear polarization and the polarization mode of the to-be-transmitted 2 nd signal is vertical linear polarization, a ratio of the amplitude a1 of the adjusted 1 st signal to the amplitude B1 of the adjusted 2 nd signal, and a phase of the adjusted 1 st signal is a difference between
α1-β1＝θVV-θHV+n*180°
wherein A isVVIs the amplitude, theta, of the vertical linear polarization reference signal received by the first port of the receiving endVVIs the phase of the vertical linear polarization reference signal received by the first port of the receiving end, AHVIs the amplitude value theta of the horizontal linear polarization reference signal received by the first port of the receiving endHVFor the phase of the horizontal linear polarization reference signal received by the first port of the receiving endN is an odd number, the first port of the receiving end is configured to receive a vertical linear polarization signal, the vertical linear polarization reference signal and the horizontal linear polarization reference signal are reference signals sent by the apparatus, and the receiving end is configured to receive a1 st path signal to be transmitted and a 2 nd path signal to be transmitted;
The ratio of the amplitude A2 of the adjusted 1 st path second signal to the amplitude B2 of the adjusted 2 nd path second signal, the phase of the adjusted 1 st path second signal is the difference between
α2-β2＝θVH-θHH+m*180°
wherein A isVHIs the amplitude, theta, of the vertical linear polarization reference signal received by the second port of the receiving endVHIs the phase of the vertical linear polarization reference signal received by the second port of the receiving end, AHHIs the amplitude, theta, of the horizontal linear polarization reference signal received by the second port of the receiving endHHM is an odd number, and the second port of the receiving end is used for receiving a horizontal linear polarization signal.
By the scheme, the polarization reconfigurable device can compensate the influence of the depolarization effect in advance under the condition that the polarization mode of the 1 st path of signals to be transmitted is horizontal linear polarization and the polarization mode of the 2 nd path of signals to be transmitted is vertical linear polarization, so that the two paths of signals received by the receiving end are orthogonal, and cross polarization interference and the depolarization effect are eliminated.
In one possible embodiment, the polarization reconfigurable device comprises: the digital-to-analog conversion unit comprises N transmitting units, N digital-to-analog conversion units corresponding to the N transmitting units one by one, and N signal adjusting units corresponding to the N digital-to-analog conversion units one by one, wherein N is an integer greater than or equal to 2.
The phase difference of the adjusted 1 st path of first signal obtained by any two adjacent signal adjusting units is
By the scheme, the polarization reconfigurable device can realize polarization reconfiguration of two paths of signals with different polarization modes, and can independently control the beam directions of the two paths of signals.
In one possible embodiment, the transmitting unit comprises a dual polarized antenna comprising the first port and the second port. When the N dual-polarized antennas in the N transmitting units form a linear array with equal spacing,
wherein k1 is the wave number of the carrier carrying the 1 st path signal to be transmitted, d is the distance between two adjacent dual-polarized antennas,
In a fifth aspect, the present application provides a communication device, which is a first communication device, and the first communication device includes: a memory and a processor. Wherein the memory stores code instructions; the processor is used for calling the code instructions stored by the memory and executing: generating a first signal and a second signal; respectively determining the polarization modes of 2 paths of signals to be transmitted, wherein the polarization mode of the 1 st path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization, and the polarization mode of the 2 nd path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization; dividing the first signal into 2N paths of first signals, and dividing the second signal into 2N paths of second signals, wherein N is a positive integer; according to the polarization mode of a 1 st path of signal to be transmitted, adjusting the amplitude and the phase of a 2i-1 th path of first signal and the amplitude and the phase of a 2i-1 th path of first signal respectively, wherein i is 1. Respectively adjusting the amplitude and the phase of the 2i-1 path of second signal and the amplitude and the phase of the 2i path of second signal according to the polarization mode of the 2 nd path of signal to be transmitted; synthesizing the adjusted 2i-1 th path first signal and the adjusted 2i-1 th path second signal into an i-th path third signal, and synthesizing the adjusted 2 i-th path first signal and the adjusted 2 i-th path second signal into an i-th path fourth signal; and performing digital-to-analog conversion on the ith path of third signal to obtain an ith path of fifth signal, and performing digital-to-analog conversion on the ith path of fourth signal to obtain an ith path of sixth signal.
Through the scheme, the first communication equipment can carry out polarization reconstruction in a digital domain according to the polarization mode of the received signal, the amplitude and the phase adjustment precision of the signal are high, the polarization reconstruction precision and the flexibility are improved, the problem that the polarization mode of the sending end and the receiving end is not matched due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal to noise ratio of the signal received by the receiving end can be improved.
In a possible implementation manner, the ith fifth signal is transmitted through a 2i-1 th port in the first communication device, the ith sixth signal is transmitted through a 2 i-th port in the first communication device, and a signal transmitted by the 2i-1 th port is orthogonal to a signal transmitted by the 2 i-th port.
When N is equal to 1, the polarization mode of the 1 st path of signal to be transmitted is orthogonal to the polarization mode of the 2 nd path of signal to be transmitted.
In a possible embodiment, when the polarization mode of the to-be-transmitted 1 st signal is horizontal linear polarization and the polarization mode of the to-be-transmitted 2 nd signal is vertical linear polarization, a ratio of the amplitude a1 of the adjusted 1 st signal to the amplitude B1 of the adjusted 2 nd signal, and a phase of the adjusted 1 st signal is a difference between
α1-β1＝θVV-θHV+n*180°
Wherein A isVVIs the amplitude, theta, of the vertically linearly polarized reference signal received by the first port of the second communication deviceVVIs the phase of the vertical linear polarization reference signal received by the first port of the second communication device, AHVIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the first port of the second communication deviceHVThe phase of a horizontal linear polarization reference signal received by a first port of the second communication device is n is an odd number, the first port of the second communication device is used for receiving a vertical linear polarization signal, the vertical linear polarization reference signal and the horizontal linear polarization reference signal are reference signals sent by the first communication device, and the second communication device is used for receiving a 1 st path signal to be transmitted and a2 nd path signal to be transmitted;
the ratio of the amplitude A2 of the adjusted 1 st path second signal to the amplitude B2 of the adjusted 2 nd path second signal, the phase of the adjusted 1 st path second signal is the difference between
α2-β2＝θVH-θHH+m*180°
wherein A isVHIs the amplitude, theta, of the vertical linear polarization reference signal received by the second port of the second communication device VHIs the phase of the vertical linear polarization reference signal received by the second port of the second communication device, AHHIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the second port of the second communication deviceHHM is an odd number, which is a phase of a horizontal linear polarization reference signal received by the second port of the second communication device, and the second port of the second communication device is configured to receive a horizontal linear polarization signal.
By the scheme, the polarization reconfigurable device can compensate the influence of the depolarization effect in advance under the condition that the polarization mode of the 1 st path of signals to be transmitted is horizontal linear polarization and the polarization mode of the 2 nd path of signals to be transmitted is vertical linear polarization, so that the two paths of signals received by the receiving end are orthogonal, and cross polarization interference and the depolarization effect are eliminated.
In a possible implementation manner, when N is greater than 1, the phase difference between the adjusted 2i-1 st path first signal and the adjusted 2i path first signal is
In one possible implementation, in a scenario where the transceiver of the first communication device includes a dual-polarized antenna, and the dual-polarized antenna includes the first port and the second port, when N dual-polarized antennas in N transmitting units form an equally-spaced linear array,
wherein k1 is the wave number of the carrier carrying the 1 st path signal to be transmitted, d is the distance between two adjacent dual-polarized antennas,the included angle between the beam direction of the 1 st path signal to be transmitted and the normal direction of the linear array is defined, k2 is the wave number for bearing the 2 nd path signal to be transmitted,and forming an included angle between the beam direction of the 2 nd path signal to be transmitted and the normal direction of the linear array.
In a sixth aspect, the present application provides a polarization reconstruction method, which is applied to a first communication device that includes 2N ports, where signals transmitted by 2i-1 th ports are orthogonal to signals transmitted by 2 i-th ports, and i is 1. The method comprises the following steps: generating a first signal and a second signal; respectively determining the polarization modes of 2 paths of signals to be transmitted, wherein the polarization mode of the 1 st path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization, and the polarization mode of the 2 nd path of signals to be transmitted comprises linear polarization, circular polarization and elliptical polarization; dividing the first signal into 2N paths of first signals, and dividing the second signal into 2N paths of second signals; respectively adjusting the amplitude and the phase of the 2i-1 path of first signal and the amplitude and the phase of the 2i path of first signal according to the polarization mode of the 1 path of signal to be transmitted; respectively adjusting the amplitude and the phase of the 2i-1 path of second signal and the amplitude and the phase of the 2i path of second signal according to the polarization mode of the 2 nd path of signal to be transmitted; synthesizing the adjusted 2i-1 th path first signal and the adjusted 2i-1 th path second signal into an i-th path third signal, and synthesizing the adjusted 2 i-th path first signal and the adjusted 2 i-th path second signal into an i-th path fourth signal; performing digital-to-analog conversion on the ith path of third signal to obtain an ith path of fifth signal, and performing digital-to-analog conversion on the ith path of fourth signal to obtain an ith path of sixth signal; and transmitting the ith path of fifth signal through the 2i-1 th port, and transmitting the ith path of sixth signal through the 2i th port.
Through the scheme, the first communication equipment can carry out polarization reconstruction in a digital domain according to the polarization mode of the received signal, the amplitude and the phase adjustment precision of the signal are high, the polarization reconstruction precision and the flexibility are improved, the problem that the polarization mode of the sending end and the receiving end is not matched due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal to noise ratio of the signal received by the receiving end can be improved.
In one possible embodiment, when N is 1, the polarization of the 1 st signal to be transmitted is orthogonal to the polarization of the 2 nd signal to be transmitted.
In a possible implementation manner, the polarization manner of the to-be-transmitted path 1 signal is vertical linear polarization, and the polarization manner of the to-be-transmitted path 2 signal is horizontal linear polarization; or, the polarization mode of the 1 st path of signal to be transmitted is horizontal linear polarization, and the polarization mode of the 2 nd path of signal to be transmitted is vertical linear polarization; or the polarization mode of the 1 st path of signal to be transmitted is + 45-degree linear polarization, and the polarization mode of the 2 nd path of signal to be transmitted is-45-degree linear polarization; or the polarization mode of the 1 st path of signal to be transmitted is-45-degree linear polarization, and the polarization mode of the 2 nd path of signal to be transmitted is + 45-degree linear polarization; or the polarization mode of the 1 st path of signals to be transmitted is left-hand circular polarization, and the polarization mode of the 2 nd path of signals to be transmitted is right-hand circular polarization; or, the polarization mode of the 1 st path of signal to be transmitted is right-hand circular polarization, and the polarization mode of the 2 nd path of signal to be transmitted is left-hand circular polarization.
In a possible embodiment, when the polarization mode of the 1 st path of signal to be transmitted is vertical linear polarization, the amplitude a1 of the adjusted 2i-1 st path of first signal is 0 (the
When the polarization mode of the 1 st path of signal to be transmitted is horizontal linear polarization, the amplitude A1 and the
When the polarization mode of the 1 st path of signal to be transmitted is +45 DEG linear polarization, the ratio of the amplitude A1 of the adjusted 2i-1 st path of first signal to the amplitude A1/B1 of the adjusted 2i-1 st path of first signal to the amplitude B1 of the adjusted 2i-1 st path of first signal is 1, the difference alpha 1-
When the polarization mode of the 1 st path of signal to be transmitted is-45 DEG linear polarization, the ratio of the amplitude A1 of the adjusted 2i-1 st path of first signal to the amplitude A1/B1 of the adjusted 2i-1 st path of first signal to the amplitude B1 of the adjusted 2i-1 st path of first signal is 1, the difference alpha 1-
When the polarization mode of the to-be-transmitted 1-path signal is left-hand circular polarization, the ratio of the amplitude A1 of the adjusted 2 i-1-path first signal to the amplitude A1/B1 of the adjusted 2 i-path first signal to the amplitude B1 of the adjusted 2 i-path first signal is 1, the difference alpha 1-
When the polarization mode of the to-be-transmitted 1-path signal is right-hand circular polarization, the ratio of the amplitude A1 of the adjusted 2 i-1-path first signal to the amplitude A1/B1 of the adjusted 2 i-path first signal to the amplitude B1 of the adjusted 2 i-path first signal is 1, the difference alpha 1-
In a possible embodiment, when the polarization mode of the to-be-transmitted 1 st signal is horizontal linear polarization and the polarization mode of the to-be-transmitted 2 nd signal is vertical linear polarization, a ratio of the amplitude a1 of the adjusted 1 st signal to the amplitude B1 of the adjusted 2 nd signal, and a phase of the adjusted 1 st signal is a difference between
α1-β1＝θVV-θHV+n*180°
wherein A isVVIs the amplitude, theta, of the vertically linearly polarized reference signal received by the first port of the second communication deviceVVIs the phase of the vertical linear polarization reference signal received by the first port of the second communication device, AHVIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the first port of the second communication deviceHVThe phase of a horizontal linear polarization reference signal received by a first port of the second communication device is n is an odd number, the first port of the second communication device is used for receiving a vertical linear polarization signal, the vertical linear polarization reference signal and the horizontal linear polarization reference signal are reference signals sent by the first communication device, and the second communication device is used for receiving a1 st path signal to be transmitted and a 2 nd path signal to be transmitted;
The ratio of the amplitude A2 of the adjusted 1 st path second signal to the amplitude B2 of the adjusted 2 nd path second signal, the phase of the adjusted 1 st path second signal is the difference between
α2-β2＝θVH-θHH+m*180°
wherein A isVHIs the amplitude, theta, of the vertical linear polarization reference signal received by the second port of the second communication deviceVHIs the phase of the vertical linear polarization reference signal received by the second port of the second communication device, AHHIs the amplitude, theta, of a horizontally linearly polarized reference signal received by the second port of the second communication deviceHHM is an odd number, which is a phase of a horizontal linear polarization reference signal received by the second port of the second communication device, and the second port of the second communication device is configured to receive a horizontal linear polarization signal.
By the scheme, under the situation that the polarization mode of the 1 st path of signals to be transmitted is horizontal linear polarization and the polarization mode of the 2 nd path of signals to be transmitted is vertical linear polarization, the first wireless device can compensate the influence of depolarization effect in advance, so that the two paths of signals received by the second communication device are orthogonal, cross polarization interference and depolarization effect are eliminated, and the method is particularly suitable for the situation that downlink transmission is dominant in wireless communication, and the power and hardware resources of the base station are more dominant than those of the terminal device, and cannot increase the complexity, cost and power consumption of the terminal device.
In a possible implementation manner, when N is greater than 1, the phase difference between the adjusted 2i-1 st path first signal and the adjusted 2i path first signal is
In one possible implementation, the first communication device includes N dual-polarized antennas, and an ith of the dual-polarized antennas includes the 2i-1 th port and the 2i th port. When the N dual-polarized antennas form a linear array with equal spacing, the
wherein k1 is the wave number of the carrier carrying the 1 st path signal to be transmitted, d is the distance between two adjacent dual-polarized antennas,the included angle between the beam direction of the 1 st path signal to be transmitted and the normal direction of the linear array is defined, k2 is the wave number for bearing the 2 nd path signal to be transmitted,and forming an included angle between the beam direction of the 2 nd path signal to be transmitted and the normal direction of the linear array.
In a seventh aspect, the present application further provides a polarization reconfigurable device, which is applied to receiving end equipment, where the polarization reconfigurable device includes: the receiving unit comprises a first port and a second port, and signals received by the first port are orthogonal to signals received by the second port. The receiving unit is configured to receive a first signal through the first port and a second signal through the second port, where the first signal is a component of a third signal in a direction corresponding to the first port, and the second signal is a component of the third signal in a direction corresponding to the second port. The analog-to-digital conversion unit is configured to perform analog-to-digital conversion on the first signal to obtain a fourth signal, and perform analog-to-digital conversion on the second signal to obtain a fifth signal. The signal adjusting unit is configured to determine a polarization mode of the third signal, where the polarization mode includes a linear polarization, a circular polarization, and an elliptical polarization; adjusting the amplitude and phase of the fourth signal and the amplitude and phase of the fifth signal according to the determined polarization mode; and synthesizing the fourth signal after adjustment and the fifth signal after adjustment into a sixth signal.
By the scheme, the polarization reconfigurable device can realize polarization reconfiguration of the received signals in a digital domain, has high reconfiguration precision and flexibility, can solve the problem of mismatching of polarization modes of the sending end and the receiving end caused by depolarization effect, and further can improve the receiving efficiency of the signals and the signal-to-noise ratio of the signals received by the receiving end.
In one possible embodiment, in the concrete implementationWhen the polarization mode of the third signal is angle γ1(γ1E (-90 deg., 90 deg.) and gamma1| A 0 °), the ratio of the amplitude a of the adjusted fourth signal to the amplitude B of the adjusted fifth signal is | tan γ3I, when gamma1>When the phase position of the fourth signal is 0, the difference between the phase position alpha of the fourth signal after adjustment and the phase position beta of the fifth signal after adjustment is even multiple of 180 DEG, when the phase position is gamma1<At 0, the difference between the phase α of the fourth signal after adjustment and the phase β of the fifth signal after adjustment is an odd multiple of 180 °. Wherein, said γ is1The direction of the electric field of the third emission signal is in a plane vertical to the propagation direction of the third signal, and the included angle is formed between the direction of the electric field of the third emission signal and the horizontal direction.
When the polarization mode of the third signal is circular polarization, the ratio of the amplitude a of the adjusted fourth signal to the amplitude B of the adjusted fifth signal is 1, and the difference between the phase α of the adjusted fourth signal and the phase β of the adjusted fifth signal is an odd multiple of 90 °.
When the polarization mode of the third signal is elliptical polarization, the ratio A/B of the amplitude A of the fourth signal after adjustment to the amplitude B of the fifth signal after adjustment, and the difference alpha-beta between the phase alpha of the fourth signal after adjustment and the phase beta of the fifth signal after adjustment are determined according to the ratio AR (a/B) of the major axis to the minor axis of the ellipse corresponding to the elliptical polarization mode and gamma2Determining; wherein, said γ is2Is the included angle between the major axis and the horizontal direction (i.e. the inclination angle of the ellipse) in the plane perpendicular to the propagation direction of the signal to be transmitted.
Wherein, a ratio a/B of the amplitude a of the adjusted fourth signal to the amplitude B of the adjusted fifth signal, and a- β of the phase α of the adjusted fourth signal to the phase β of the adjusted fifth signal satisfy the following formula:
in a possible embodiment, the polarization reconfigurable device may further include a signal processing unit, and the signal processing unit is configured to process the sixth signal.
In one possible implementation, the polarization reconfigurable device may include N receiving units, N digital-to-analog conversion units corresponding to the N receiving units one to one, and N signal adjusting units corresponding to the N digital-to-analog conversion units one to one, where N is an integer greater than or equal to 2. The phase difference of the adjusted fourth signals obtained by any two adjacent signal adjusting units is theta, the phase difference of the adjusted fifth signals obtained by any two adjacent signal adjusting units is theta, and theta is determined according to the beam direction of the third signal. That is, the polarization reconfigurable device may also implement control of the beam direction of the third signal.
At this time, the signal generating unit is further configured to synthesize the N sixth signals obtained by the N signal adjusting units into a seventh signal, and process the seventh signal.
In a possible implementation, the receiving unit includes a dual-polarized antenna, and the dual-polarized antenna includes the first port and the second port, and is configured to receive the first signal through the first port. When N dual polarized antennas in N receiving units form a linear array with equal spacing, θ satisfies the following formula:
wherein k is a wave number of a carrier for carrying the third signal, d is a distance between two adjacent dual-polarized antennas, an
In an eighth aspect, the present application further provides a communication device, including: a memory and a processor. Wherein the memory stores code instructions; the processor is used for calling the code instructions stored by the memory and executing: performing analog-to-digital conversion on the ith path of first signal to obtain an ith path of second signal, wherein the ith path of first signal is a component of a third signal in a direction corresponding to the 2i-1 th port, i is 1. Performing analog-to-digital conversion on the ith path of fourth signal to obtain an ith path of fifth signal, wherein the ith path of fourth signal is a component of the third signal in a direction corresponding to the 2 i-th port; determining a polarization mode of the third signal, wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; according to the determined polarization mode, adjusting the amplitude and the phase of the ith path of second signal and the amplitude and the phase of the ith path of fifth signal; and synthesizing the adjusted ith second signal and the adjusted ith fifth signal into an ith sixth signal.
By the scheme, the communication equipment can realize polarization reconstruction of the received signal in a digital domain, has high reconstruction precision and flexibility, can solve the problem that the polarization modes of the sending end and the receiving end are not matched due to depolarization effect, and further can improve the receiving efficiency of the signal and the signal-to-noise ratio of the signal received by the receiving end.
In a possible implementation manner, the ith first signal is received by the communication device through a 2i-1 th port of a transceiver in the communication device, the ith fourth signal is received by the communication device through a 2 i-th port of the transceiver in the communication device, and a signal received by the 2i-1 th port is orthogonal to a signal received by the 2 i-th port.
In one possible embodiment, when the polarization of the third signal is at an angle γ1(γ1E (-90 deg., 90 deg.) and gamma3| A The amplitude A of the adjusted ith path of second signal and the adjusted ith path of second signal are linearly polarized at 0 DEGThe ratio of the amplitude B of the fifth signal is | tan γ3I, when gamma1>When the phase position of the ith path of second signal is 0, the difference between the phase position alpha of the ith path of second signal after adjustment and the phase position beta of the ith path of fifth signal after adjustment is even multiple of 180 DEG, when gamma is 1<And when the phase angle is 0, the difference between the phase alpha of the adjusted ith second signal and the phase beta of the adjusted ith fifth signal is an odd multiple of 180 degrees. Wherein, said γ is1The direction of the electric field of the third emission signal is in a plane vertical to the propagation direction of the third signal, and the included angle is formed between the direction of the electric field of the third emission signal and the horizontal direction.
When the polarization mode of the third signal is circular polarization, the ratio of the amplitude a of the adjusted ith second signal to the amplitude B of the adjusted ith fifth signal is 1, and the difference between the phase α of the adjusted ith second signal and the phase β of the adjusted ith fifth signal is an odd multiple of 90 °.
When the polarization mode of the third signal is elliptical polarization, the ratio A/B of the amplitude A of the adjusted ith second signal to the amplitude B of the adjusted ith fifth signal, and the difference alpha-beta between the phase alpha of the adjusted ith second signal and the phase beta of the adjusted ith fifth signal are determined according to the ratio AR (a/B) of the major axis to the minor axis of the ellipse corresponding to the elliptical polarization mode and gamma2Determining; wherein, said γ is2Is the included angle between the major axis and the horizontal direction (i.e. the inclination angle of the ellipse) in the plane perpendicular to the propagation direction of the signal to be transmitted.
In one possible embodiment, when N is greater than 1, the phase difference between the adjusted ith second signal and the adjusted (i + 1) th second signal is θ, and the phase difference between the adjusted ith fifth signal and the adjusted (i + 1) th fifth signal is θ; wherein θ is determined according to a beam direction of the third signal. That is, the communication device may also implement control of the beam direction of the third signal.
At this time, the processor is further configured to synthesize the N sixth signals into a seventh signal, and process the seventh signal.
In one possible implementation, the transceiver in the communication device includes N dual-polarized antennas, and the ith dual-polarized antenna includes the 2i-1 st port and the 2i th port. When the N dual-polarized antennas form a linear array with equal spacing, the theta satisfies the following formula:
wherein k is a wave number of a carrier for carrying the third signal, d is a distance between two adjacent dual-polarized antennas, an
In a ninth aspect, the present application provides a polarization reconfigurable method, which is applied to a communication device including 2N ports, where signals received by 2i-1 th ports are orthogonal to signals received by 2i ports, and i ═ 1.. N, where N is a positive integer. The method comprises the following steps: receiving an ith first signal through the 2i-1 th port, and receiving an ith second signal through the 2i th port, wherein the ith first signal is a component of a third signal in a direction corresponding to the 2i-1 th port, and the ith second signal is a component of the third signal in a direction corresponding to the 2i th port; performing analog-to-digital conversion on the ith path of first signal to obtain an ith path of fourth signal, and performing analog-to-digital conversion on the ith path of second signal to obtain an ith path of fifth signal; determining a polarization of the third signal. Wherein the polarization mode comprises linear polarization, circular polarization and elliptical polarization; according to the determined polarization mode, adjusting the amplitude and the phase of the ith path of fourth signal and the amplitude and the phase of the ith path of fifth signal; and synthesizing the adjusted ith fourth signal and the adjusted ith fifth signal into an ith sixth signal.
By the scheme, the communication equipment can realize polarization reconstruction of the received signal in a digital domain, has high reconstruction precision, can solve the problem of mismatching polarization modes of the sending end and the receiving end caused by depolarization effect, and further can improve the receiving efficiency of the signal and the signal-to-noise ratio of the signal received by the receiving end.
In one possible embodiment, when the polarization of the third signal is at an angle γ1(γ1E (-90 deg., 90 deg.) and gamma3| A In linear polarization of 0 °), the ratio of the amplitude a of the adjusted i-th fourth signal to the amplitude B of the adjusted i-th fifth signal is | tan γ3I, when gamma1>When the phase position of the ith path of fourth signal is 0, the difference between the phase position alpha of the ith path of fourth signal after adjustment and the phase position beta of the ith path of fifth signal after adjustment is even multiple of 180 DEG, when gamma is1<And when the phase angle is 0, the difference between the phase alpha of the adjusted ith fourth signal and the phase beta of the adjusted ith fifth signal is an odd multiple of 180 degrees. Wherein, said γ is1The direction of the electric field of the third emission signal is in a plane vertical to the propagation direction of the third signal, and the included angle is formed between the direction of the electric field of the third emission signal and the horizontal direction.
When the polarization mode of the third signal is circular polarization, the ratio of the amplitude a of the adjusted ith fourth signal to the amplitude B of the adjusted ith fifth signal is 1, and the difference between the phase α of the adjusted ith fourth signal and the phase β of the adjusted ith fifth signal is an odd multiple of 90 °.
When the polarization mode of the third signal is elliptical polarization, the ratio A/B of the amplitude A of the adjusted ith fourth signal to the amplitude B of the adjusted ith fifth signal, and the difference alpha-beta between the phase alpha of the adjusted ith fourth signal and the phase beta of the adjusted ith fifth signal are determined according to the ratio AR (a/B) of the major axis to the minor axis of the ellipse corresponding to the elliptical polarization mode and gamma2Determining; wherein, said γ is2Is the included angle between the major axis and the horizontal direction (i.e. the inclination angle of the ellipse) in the plane perpendicular to the propagation direction of the signal to be transmitted.
In one possible embodiment, when N is greater than 1, the phase difference between the adjusted ith fourth signal and the adjusted (i + 1) th fourth signal is θ, and the phase difference between the adjusted ith fifth signal and the adjusted (i + 1) th fifth signal is θ; wherein θ is determined according to a beam direction of the third signal. That is, the communication device may also implement control of the beam direction of the third signal.
At this time, the communication device further synthesizes the N sixth signals into a seventh signal, and processes the seventh signal.
In one possible implementation, the communication device includes N dual-polarized antennas, and the ith dual-polarized antenna includes the 2i-1 st port and the 2i th port. When the N dual-polarized antennas form a linear array with equal spacing, the theta satisfies the following formula:
wherein k is a wave number of a carrier for carrying the third signal, d is a distance between two adjacent dual-polarized antennas, an
In a tenth aspect, the present application provides a polarization reconfigurable device comprising: the receiving unit comprises a first port and a second port, and signals received by the first port are orthogonal to signals received by the second port. The receiving unit is configured to receive a first signal through the first port and receive a second signal through the second port; the first signal is a sum of a component of a third signal in a direction corresponding to the first port and a component of a fourth signal in a direction corresponding to the first port, and the second signal is a sum of a component of the third signal in a direction corresponding to the second port and a component of the fourth signal in a direction corresponding to the second port. The analog-to-digital conversion unit is configured to perform analog-to-digital conversion on the first signal to obtain a fifth signal, and perform analog-to-digital conversion on the second signal to obtain a sixth signal. The signal adjusting unit is configured to determine a polarization mode of the third signal and a polarization mode of the fourth signal, where the third signal polarization mode includes linear polarization, circular polarization, and elliptical polarization, and the fourth signal polarization mode includes linear polarization, circular polarization, and elliptical polarization; dividing the fifth signal into 2 paths of fifth signals, and dividing the sixth signal into 2 paths of sixth signals; according to the polarization mode of the third signal, adjusting the amplitude and the phase of the fifth signal of the 1 st path and the amplitude and the phase of the sixth signal of the 1 st path, and synthesizing the adjusted fifth signal of the 1 st path and the adjusted sixth signal of the 1 st path into a seventh signal; and adjusting the amplitude and the phase of the fifth signal of the 2 nd path and the amplitude and the phase of the sixth signal of the 2 nd path according to the polarization mode of the fourth signal, and synthesizing the adjusted fifth signal of the 2 nd path and the adjusted sixth signal of the 2 nd path into an eighth signal.
By the scheme, the polarization reconfigurable device can respectively perform polarization reconfiguration in a digital domain according to the polarization modes of the two paths of received signals, has high reconfiguration precision and flexibility, can solve the problem that the polarization modes of the sending end and the receiving end are not matched due to depolarization effect, and further can improve the receiving efficiency of the signals and the signal-to-noise ratio of the signals received by the receiving end.
In a possible embodiment, the polarization reconfigurable device may further include a signal processing unit, and the
In one possible implementation, in a scenario where the polarization reconfigurable device includes 1 receiving unit, the polarization of the third signal is orthogonal to the polarization of the fourth signal.
In one possible embodiment, the polarization of the third signal is vertical linear polarization, and the polarization of the fourth signal is horizontal linear polarization; or the polarization mode of the third signal is horizontal linear polarization, and the polarization mode of the fourth signal is vertical linear polarization; or the polarization mode of the third signal is +45 ° linear polarization, and the polarization mode of the fourth signal is-45 ° linear polarization; or the polarization mode of the third signal is-45 ° linear polarization, and the polarization mode of the fourth signal is +45 ° linear polarization; or the polarization mode of the third signal is left-hand circular polarization, and the polarization mode of the fourth signal is right-hand circular polarization; or the polarization mode of the third signal is right-hand circular polarization, and the polarization mode of the fourth signal is left-hand circular polarization.
Further, when the polarization mode of the third signal is vertical linear polarization, the amplitude a1 of the adjusted 1 st path fifth signal is 0 (the
When the polarization mode of the third signal is horizontal linear polarization, the amplitude a1 and the
When the polarization mode of the third signal is +45 ° linear polarization, the ratio of the amplitude a1 of the adjusted 1 st path fifth signal to the amplitude a1/B1 of the adjusted 1 st path sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is-45 ° linear polarization, the ratio of the amplitude a1 of the adjusted 1 st path fifth signal to the amplitude a1/B1 of the adjusted 1 st path sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is left-hand circular polarization, the ratio of the amplitude a1 of the adjusted 1 st fifth signal to the amplitude a1/B1 of the adjusted 1 st sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is right-hand circular polarization, the ratio of the amplitude a1 of the adjusted 1 st fifth signal to the amplitude a1/B1 of the adjusted 1 st sixth signal to the amplitude B1 of the adjusted 1 st sixth signal is 1, the difference α 1-
In one possible implementation, the polarization reconfigurable device may include N receiving units, N digital-to-analog conversion units corresponding to the N receiving units one to one, and N signal adjusting units corresponding to the N digital-to-analog conversion units one to one, where N is an integer greater than or equal to 2. The phase difference of the adjusted 1 st path fifth signal obtained by any two adjacent signal adjusting units is
At this time, the signal processing unit is further configured to synthesize the N seventh signals obtained by the N signal adjustment units into a ninth signal, synthesize the N eighth signals obtained by the N signal adjustment units into a tenth signal, and process the ninth signal and the tenth signal.
In a possible implementation, the receiving unit includes a dual-polarized antenna, and the dual-polarized antenna includes the first port and the second port, and is configured to receive the first signal through the first port. When N dual-polarized antennas in N receiving units form a linear array with equal spacing,
wherein k1 is used for carrying theThe wave number of the carrier wave of the third signal, d is the distance between two adjacent dual-polarized antennas,is the angle between the beam direction of the third signal and the normal of the linear array, k2 is the wave number of the carrier wave used to carry the third signal, an
In an eleventh aspect, the present application further provides a communication device, including: a transceiver and memory, and a processor. Wherein the memory stores code instructions. The processor is configured to call the code instructions stored in the
Through the scheme, the communication equipment can respectively carry out polarization reconstruction according to the polarization modes of receiving two paths of signals in a digital domain, the reconstruction precision and the flexibility are high, the problem that the polarization modes of a sending end and a receiving end are not matched due to the depolarization effect can be solved, and the receiving efficiency of the signals and the signal-to-noise ratio of the signals received by the receiving end can be improved.
In a possible implementation manner, the ith first signal is received by the communication device through a 2i-1 th port of a transceiver in the communication device, the ith fifth signal is received by the communication device through a 2 i-th port of the transceiver in the communication device, and a signal received by the 2i-1 th port is orthogonal to a signal received by the 2 i-th port.
In one possible implementation, in a scenario where the transceiver includes 2 ports (N ═ 1), the polarization of the third signal is orthogonal to the polarization of the fourth signal.
In one possible embodiment, the polarization of the third signal is vertical linear polarization, and the polarization of the fourth signal is horizontal linear polarization; or the polarization mode of the third signal is horizontal linear polarization, and the polarization mode of the fourth signal is vertical linear polarization; or the polarization mode of the third signal is +45 ° linear polarization, and the polarization mode of the fourth signal is-45 ° linear polarization; or the polarization mode of the third signal is-45 ° linear polarization, and the polarization mode of the fourth signal is +45 ° linear polarization; or the polarization mode of the third signal is left-hand circular polarization, and the polarization mode of the fourth signal is right-hand circular polarization; or the polarization mode of the third signal is right-hand circular polarization, and the polarization mode of the fourth signal is left-hand circular polarization.
Further, when the polarization mode of the third signal is vertical linear polarization, the amplitude a1 of the adjusted 1 st path second signal is 0 (the
When the polarization mode of the third signal is horizontal linear polarization, the amplitude a1 and the
When the polarization mode of the third signal is +45 ° linear polarization, the ratio of the amplitude a1 of the adjusted 1 st path second signal to the amplitude a1/B1 of the adjusted 1 st path sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is-45 ° linear polarization, the ratio of the amplitude a1 of the adjusted 1 st path second signal to the amplitude a1/B1 of the adjusted 1 st path sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is left-hand circular polarization, the ratio of the amplitude a1 of the adjusted 1 st second signal to the amplitude a1/B1 of the adjusted 1 st sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is right-hand circular polarization, the ratio of the amplitude a1 of the adjusted 1 st second signal to the amplitude a1/B1 of the adjusted 1 st sixth signal B1 is 1, the difference α 1-
In one possible embodiment, when N is greater than 1, the phase difference between the adjusted 2j-1 th path second signal and the adjusted 2j-1 th path sixth signal is
At this time, the processor is further configured to synthesize the N seventh signals into a ninth signal, synthesize the N eighth signals into a tenth signal, and process the ninth signal and the tenth signal.
In one possible implementation, in a scenario where a transceiver in the communication device includes N dual-polarized antennas, an ith dual-polarized antenna includes the 2i-1 st port and the 2i th port, when the N dual-polarized antennas form a linear array with equal spacing,
where k1 is the wave number of the carrier wave used to carry the third signal, d is the distance between two adjacent dual-polarized antennas,is the angle between the beam direction of the third signal and the normal of the linear array, k2 is the wave number of the carrier wave used to carry the third signal, anAnd the included angle between the beam direction of the fourth signal and the normal direction of the linear array is formed.
In a twelfth aspect, the present application provides a polarization reconstruction method, applied to a communication device including 2N ports, where signals received by 2i-1 th ports are orthogonal to signals received by 2i ports, and i ═ 1.. N, where N is a positive integer. The method comprises the following steps: receiving an ith first signal through the 2i-1 th port, and receiving an ith second signal through the 2i-1 th port, wherein the ith first signal is a sum of a component of a third signal in a direction corresponding to the 2i-1 th port and a component of a fourth signal in a direction corresponding to the 2i-1 th port, and the ith second signal is a sum of a component of the third signal in a direction corresponding to the 2i-1 th port and a component of the fourth signal in a direction corresponding to the 2 i-2 th port; performing analog-to-digital conversion on the ith path of first signal to obtain an ith path of fifth signal, and performing analog-to-digital conversion on the ith path of second signal to obtain an ith path of sixth signal; determining a polarization mode of the third signal and a polarization mode of the fourth signal, wherein the polarization modes of the third signal comprise linear polarization, circular polarization and elliptical polarization, and the polarization modes of the fourth signal comprise linear polarization, circular polarization and elliptical polarization; dividing the ith path of fifth signal into 2 paths of signals to obtain 2N paths of fifth signals, and dividing the ith path of sixth signal into 2 paths of signals to obtain 2N paths of sixth signals; according to the polarization mode of the third signal, adjusting the amplitude and the phase of the fifth signal of the 2j-1 th path and the amplitude and the phase of the sixth signal of the 2j-1 th path, and synthesizing the adjusted fifth signal of the 2j-1 th path and the adjusted sixth signal of the 2j-1 th path into a seventh signal of the j path, wherein j is 1,2 … N; and adjusting the amplitude and the phase of the fifth signal of the 2j path and the amplitude and the phase of the sixth signal of the 2j path according to the polarization mode of the fourth signal, and synthesizing the adjusted fifth signal of the 2j path and the adjusted sixth signal of the 2j path into the eighth signal of the j path.
By the scheme, the communication equipment can perform polarization reconstruction in a digital domain according to the polarization mode of the received signal, the polarization reconstruction is high in precision and flexibility, the problem that the polarization mode of the sending end is not matched with that of the receiving end due to the depolarization effect can be solved, and the receiving efficiency of the signal and the signal-to-noise ratio of the signal received by the receiving end can be improved.
In one possible embodiment, when N is 1, the polarization of the third signal is orthogonal to the polarization of the fourth signal.
In one possible embodiment, the polarization of the third signal is vertical linear polarization, and the polarization of the fourth signal is horizontal linear polarization; or the polarization mode of the third signal is horizontal linear polarization, and the polarization mode of the fourth signal is vertical linear polarization; or the polarization mode of the third signal is +45 ° linear polarization, and the polarization mode of the fourth signal is-45 ° linear polarization; or the polarization mode of the third signal is-45 ° linear polarization, and the polarization mode of the fourth signal is +45 ° linear polarization; or the polarization mode of the third signal is left-hand circular polarization, and the polarization mode of the fourth signal is right-hand circular polarization; or the polarization mode of the third signal is right-hand circular polarization, and the polarization mode of the fourth signal is left-hand circular polarization.
Further, when the polarization mode of the third signal is vertical linear polarization, the amplitude a1 of the adjusted 1 st path fifth signal is 0 (the
When the polarization mode of the third signal is horizontal linear polarization, the amplitude a1 and the
When the polarization mode of the third signal is +45 ° linear polarization, the ratio of the amplitude a1 of the adjusted 1 st path fifth signal to the amplitude a1/B1 of the adjusted 1 st path sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is-45 ° linear polarization, the ratio of the amplitude a1 of the adjusted 1 st path fifth signal to the amplitude a1/B1 of the adjusted 1 st path sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is left-hand circular polarization, the ratio of the amplitude a1 of the adjusted 1 st fifth signal to the amplitude a1/B1 of the adjusted 1 st sixth signal B1 is 1, the difference α 1-
When the polarization mode of the third signal is right-hand circular polarization, the ratio of the amplitude a1 of the adjusted 1 st fifth signal to the amplitude a1/B1 of the adjusted 1 st sixth signal to the amplitude B1 of the adjusted 1 st sixth signal is 1, the difference α 1-
In one possible embodiment, when N is greater than 1, the phase difference between the adjusted 2j-1 th path fifth signal and the adjusted 2j-1 th path sixth signal is
At this time, the processor is further configured to synthesize the N seventh signals into a ninth signal, synthesize the N eighth signals into a tenth signal, and process the ninth signal and the tenth signal.
In a possible implementation manner, in a scenario where the wireless communication device includes N dual-polarized antennas, an ith dual-polarized antenna includes the 2i-1 st port and the 2i th port, when the N dual-polarized antennas form an equidistant linear array,
where k1 is the wave number of the carrier wave used to carry the third signal, d is the distance between two adjacent dual-polarized antennas,
In a thirteenth aspect, the present application also provides a computer storage medium, in which a software program is stored, and the software program can implement the method provided by any one of the embodiments of the third aspect when being read and executed by one or more processors.
In a fourteenth aspect, the present application also provides a computer storage medium, in which a software program is stored, and the software program can implement the method provided by any one of the embodiments of the sixth aspect when being read and executed by one or more processors.
In a fifteenth aspect, the present application also provides a computer storage medium, in which a software program is stored, and the software program can implement the method provided by any one of the embodiments of the ninth aspect when being read and executed by one or more processors.
In a sixteenth aspect, the present application further provides a computer storage medium, in which a software program is stored, and the software program can implement the method provided by any one of the above-mentioned embodiments of the twelfth aspect when being read and executed by one or more processors.
In a seventeenth aspect, the present application also provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method provided by any of the embodiments of the third aspect.
In an eighteenth aspect, the present application also provides a computer program product containing instructions, which when run on a computer, causes the computer to perform the method provided by any of the embodiments in the sixth aspect.
In a nineteenth aspect, the present application further provides a computer program product containing instructions which, when run on a computer, cause the computer to perform the method provided by any of the embodiments of the ninth aspect described above.
In a twentieth aspect, the present application further provides a computer program product containing instructions that, when executed on a computer, cause the computer to perform the method provided in any of the above-described twelfth aspects.
Drawings
FIG. 1 is a schematic diagram of an electric field strength vector of an electromagnetic wave propagating along the + z axis;
FIG. 2a is a diagram illustrating an electric field intensity vector of an electromagnetic wave in linear polarization;
FIG. 2b is a diagram illustrating electric field intensity vectors of an electromagnetic wave in a circular polarization;
FIG. 2c is a diagram illustrating the electric field strength vector of an electromagnetic wave in elliptical polarization;
FIG. 3 is a schematic diagram of a satellite communication system;
FIG. 4 is a schematic representation of Faraday rotation;
FIG. 5 is a schematic view of the depolarization effect of a raindrop;
fig. 6 is a schematic structural diagram of a first polarization reconfigurable device according to an embodiment of the present application;
fig. 7 is a second schematic structural diagram of a first polarization reconfigurable device according to an embodiment of the present application;
fig. 8 is a third schematic structural diagram of a first polarization reconfigurable device according to an embodiment of the present application;
Fig. 9 is a fourth schematic structural diagram of a first polarization reconfigurable device according to an embodiment of the present application;
fig. 10 is a schematic structural diagram of a second polarization reconfigurable device according to an embodiment of the present application;
fig. 11 is a second schematic structural diagram of a second polarization reconfigurable device according to an embodiment of the present application;
FIG. 12 is a cross-polarization interference diagram provided by an embodiment of the present application;
fig. 13 is a third schematic structural diagram of a second polarization reconfigurable device according to an embodiment of the present application;
fig. 14 is a schematic structural diagram of a third polarization reconfigurable device according to an embodiment of the present application;
fig. 15 is a second schematic structural diagram of a third polarization reconfigurable device according to an embodiment of the present application;
fig. 16 is a third schematic structural diagram of a third polarization reconfigurable device according to an embodiment of the present application;
fig. 17 is a schematic structural diagram of a fourth polarization reconfigurable device according to an embodiment of the present application;
fig. 18 is a second schematic structural diagram of a fourth polarization reconfigurable device according to an embodiment of the present application;
fig. 19 is a third schematic structural diagram of a fourth polarization reconfigurable device according to an embodiment of the present application;
fig. 20a is a schematic structural diagram of a communication device according to an embodiment of the present application;
Fig. 20b is a second schematic structural diagram of a communication device according to an embodiment of the present application;
fig. 21a is a schematic structural diagram of another communication device provided in an embodiment of the present application;
fig. 21b is a second schematic structural diagram of another communication device according to the embodiment of the present application;
fig. 22 is a schematic structural diagram of a fifth polarization reconfigurable device according to an embodiment of the present application;
fig. 23 is a second schematic structural diagram of a fifth polarization reconfigurable device according to an embodiment of the present application;
fig. 24 is a schematic structural diagram of a sixth polarization reconfigurable device according to an embodiment of the present application;
fig. 25 is a second schematic structural diagram of a sixth polarization reconfigurable device according to an embodiment of the present application;
fig. 26 is a second schematic structural diagram of another communication device according to an embodiment of the present application;
fig. 27 is a schematic flowchart of a first polarization reconstruction method according to an embodiment of the present application;
fig. 28 is a schematic flowchart of a second polarization reconstruction method according to an embodiment of the present application;
fig. 29 is a schematic flowchart of a third polarization reconstruction method according to an embodiment of the present application;
fig. 30 is a schematic flowchart of a fourth polarization reconstruction method according to an embodiment of the present application.
Detailed Description
As shown in fig. 1, for a planar electromagnetic wave propagating in the + z direction, both the electric field strength vector and the magnetic field strength vector are in the plane where z is constant. Wherein the electric field strength vector comprises two components ExAnd EyThe two components areThe quantities being complex in the frequency domain, ExAnd EyInstantaneous values in the time domain are shown as follows:
wherein E isxmIs ExAmplitude, ω is the frequency of the electromagnetic wave, k is the wave number,is ExPhase of (E)ymIs EyThe amplitude of (a) of (b) is,is EyThe phase of (c). According to ExAnd EyThe polarization of the electromagnetic wave exhibits different characteristics, as shown in fig. 2a, when ExAnd EyWhen the phase difference of (3) is integral multiple of pi, the electromagnetic wave is linearly polarized; when E is shown in FIG. 2bxAnd EyWhen the phase difference of the two phases is 90 degrees and the amplitudes are equal, the electromagnetic wave is circularly polarized; when E is shown in FIG. 2cxAnd EyWhen the phase relationship of (2) is other conditions, the electromagnetic wave is elliptically polarized.
As shown in fig. 3, in order to improve the transmission efficiency of electromagnetic waves and the throughput of the system, polarized electromagnetic waves are generally used for communication between a satellite, which serves as a relay station, and an earth station (earth station) in a satellite communication system, wherein radio waves are transmitted by the satellite, thereby realizing communication between two or more earth stations. When a satellite communicates with the ground, electromagnetic wave signals (microwave signals) need to pass through the atmosphere when being transmitted between the satellite and the ground, and the polarized surface of the polarized electromagnetic waves is deflected due to the ionosphere in the atmosphere and the depolarization effect of rain, snow and the like. The depolarization effect mainly includes faraday rotation and depolarization caused by rain and snow, where faraday rotation refers to the deflection of a polarization plane generated by the interaction between linearly polarized electromagnetic waves and charged ions in an ionized layer due to the existence of a geomagnetic field when the linearly polarized electromagnetic waves pass through the ionized layer, as shown in fig. 4. Generally, faraday rotation of linearly polarized electromagnetic waves of 10GHz or less is relatively significant, and the lower the frequency of electromagnetic waves under the same conditions, the more severe the polarization plane deflection.
In addition to the faraday rotation of the ionosphere, raindrops and snow in the atmosphere also cause the plane of polarization to rotate. In the case of raindrops, the raindrops generally appear ellipsoidal rather than ideal spherical due to the influence of gravity and/or wind. The ellipsoidal raindrop generates a larger attenuation to the electric field along the major axis direction and a smaller attenuation to the electric field along the minor axis direction, and the electric field of the electromagnetic wave incident to the raindrop is Ei and synthesized from two components Eiv and Eih as shown in fig. 5, because the raindrop has a larger attenuation to Eih and a smaller attenuation to Eiv, the electric field Er passing through the raindrop is deflected at a certain angle to the Ei in the minor axis direction of the raindrop.
Depolarization can cause polarization mismatch between the transmitting end and the receiving end, which further causes the reduction of the signal-to-noise ratio of the received signal and reduces the receiving efficiency. In order to solve the problem, the application provides a polarization reconfigurable device, a communication device and a polarization reconfigurable method. The polarization reconfigurable device and the method provided by the embodiment of the application can be applied to devices which utilize polarized electromagnetic waves to perform communication, such as a satellite and an earth station in a satellite communication system shown in fig. 3, and also such as a base station and a terminal device in a wireless communication system.
As shown in fig. 6, the present application provides a first polarization
The above components constituting the polarization
the
The
The digital-to-
The transmitting
The first signal generated by the
The
For example, when the polarization mode of the signal to be transmitted is +45 ° linear polarization, the ratio of the amplitude a of the adjusted 1 st path first signal to the amplitude B of the adjusted 2 nd path first signal is 1, the difference between the phase α of the adjusted 1 st path first signal and the phase β of the adjusted 2 nd path first signal is even times of 180 °, when the polarization mode of the signal to be transmitted is-45 ° linear polarization, the ratio of the amplitude a of the adjusted 1 st path first signal to the amplitude B of the adjusted 2 nd path first signal is 1, and the difference between the phase α of the adjusted 1 st path first signal and the phase β of the adjusted 2 nd path first signal is odd times of 180 °.
When the polarization mode of the signal to be transmitted is circular polarization, the ratio of the amplitude a of the adjusted 1 st path first signal to the amplitude B of the adjusted 2 nd path first signal is 1, and the difference between the phase α of the adjusted 1 st path first signal and the phase β of the adjusted 2 nd path first signal is an odd multiple of 90 °.
When the polarization mode of the signal to be transmitted is elliptical polarization, the ratio A/B of the amplitude A of the adjusted 1 st path first signal to the amplitude B of the adjusted 2 nd path first signal, and the difference alpha-beta between the phase alpha of the adjusted 1 st path first signal and the phase beta of the adjusted 2 nd path first signal are obtained according to the ratio AR (a/B) of the major axis to the minor axis of the ellipse corresponding to the elliptical polarization mode and gamma 2Determining; wherein, said γ is2Is the included angle between the major axis and the horizontal direction (i.e. the inclination angle of the ellipse) in the plane perpendicular to the propagation direction of the signal to be transmitted.
When the polarization mode of the signal to be transmitted is elliptical polarization as shown in fig. 2c, a ratio a/B of the amplitude a of the adjusted 1 st path first signal to the amplitude B of the adjusted 2 nd path first signal, and α - β of the phase α of the adjusted 1 st path first signal to the phase β of the adjusted 2 nd path first signal satisfy the following formula:
the transmitting
Further, as shown in fig. 9, the polarization
In addition, in order to meet a specific beamforming requirement, the amplitude ratio of the adjusted 1 st path first signal obtained by any two adjacent
Wherein, in a scenario where the transmitting unit includes a dual-polarized antenna including the first port and the second port, when N dual-polarized antennas in
Wherein k is the wave number of the carrier for carrying the signal to be transmitted, d is the distance between two adjacent dual-polarized antennas, an
By the scheme, the polarization
As shown in fig. 10, the present application provides a second
The above components constituting the
the
The
The digital-to-
The
The first signal and the second signal generated by the
It should be noted that, the sharing of one NCO 1013 by 2 digital mixers 1012 in the
The
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