阅读说明：本技术 基于软件无线电架构的多通道通用无线信号发射设备 (Multichannel universal wireless signal transmitting equipment based on software radio architecture ) 是由 钟声 钟友军 高洁 于 2019-08-21 设计创作，主要内容包括：本发明公开了一种基于软件无线电架构的多通道通用无线信号发射设备。本发明中：信号产生模块产生的激励信号通过正交上变频模块将信号频率搬移到指定的射频频率；正交上变频模块将变频后的信号传输至射频多工器；射频多工器与宽带天线电性连接；信号产生模块中，FPGA芯片通过高速接口电路与四个DAC芯片电性连接，DAC芯片将信号通过滤波和放大组进行滤波和放大处理后传输至正交上变频模块；FPGA芯片通过高速总线接口电路与大容量高速存储颗粒电性连接。本发明通过构建了一个基于软件无线电架构的多通道通用无线信号产生与发射链路，在通用硬件电路架构的基础上通过软件可编程性来解决多种应用场景下的实时产生与发射控制问题。(The invention discloses a multi-channel general wireless signal transmitting device based on a software radio architecture. In the invention: the excitation signal generated by the signal generation module is transferred to the appointed radio frequency through the orthogonal up-conversion module; the orthogonal up-conversion module transmits the frequency-converted signal to a radio frequency multiplexer; the radio frequency multiplexer is electrically connected with the broadband antenna; in the signal generation module, the FPGA chip is electrically connected with the four DAC chips through a high-speed interface circuit, and the DAC chips are used for filtering and amplifying signals through a filtering and amplifying group and then transmitting the signals to the orthogonal up-conversion module; the FPGA chip is electrically connected with the high-capacity high-speed storage particles through a high-speed bus interface circuit. The invention solves the real-time generation and emission control problem under various application scenes through software programmability on the basis of a general hardware circuit architecture by constructing a multi-channel general wireless signal generation and emission link based on a software radio architecture.)

1. A multi-channel general wireless signal transmitting device based on a software radio framework is characterized by comprising a signal generating module, an orthogonal up-conversion module, a broadband radio frequency power amplifier module, a radio frequency multiplexer and a broadband antenna;

the excitation signal generated by the signal generation module is used for moving the signal frequency to the appointed radio frequency through the orthogonal up-conversion module; the orthogonal up-conversion module is a broadband orthogonal mixing circuit;

the orthogonal up-conversion module transmits the frequency-converted signal to a radio frequency multiplexer; the radio frequency multiplexer is electrically connected with the broadband antenna;

the signal generation module is an 8-channel digital excitation signal generation module; the signal generation module comprises an FPGA chip, a DAC chip, a high-speed clock source chip, a high-speed bus interface circuit and large-capacity high-speed storage particles;

the FPGA chip is electrically connected with the four DAC chips through the high-speed interface circuit to generate 8 pairs of I/Q signals, and the DAC chips are used for filtering and amplifying the signals through the filtering and amplifying group and then transmitting the signals to the orthogonal up-conversion module;

the FPGA chip programs signals of waveform parameters such as a technical system, a modulation style, modulation parameters and the like which need to be transmitted in a wireless channel to generate corresponding baseband digital signals;

the DAC chip performs analog-to-digital conversion and orthogonal transformation on the received signals; the DAC chip controls the sampling rate, the frequency of the output intermediate frequency signal and the amplitude-phase parameter of the orthogonal output signal through variation;

the FPGA chip is electrically connected with the high-capacity high-speed storage particles through a high-speed bus interface circuit; and the large-capacity high-speed storage particles transmit signals to the FPGA chip.

2. The software radio architecture based multi-channel general wireless signal transmitting device as claimed in claim 1, wherein the frequency range of the multi-channel orthogonal signal output by the DAC chip is below 500 MHz.

3. The device for multi-channel universal wireless signal transmission based on software defined radio architecture as claimed in claim 1, wherein said high speed clock source chip provides high speed clock for FPGA chip and DAC chip, and provides local oscillation signal for quadrature up-conversion module.

4. The device as claimed in claim 1, wherein the high-capacity high-speed storage particles store signals of waveform parameters such as various technical systems, modulation patterns, modulation parameters, etc. which are generated in advance through Matlab simulation or acquired in advance by a data acquisition system and need to be transmitted in a wireless channel.

5. The multi-channel universal wireless signal transmitting device based on the software radio architecture as claimed in claim 1, wherein said FPGA chip is further connected with a WIFI interface control circuit, an ethernet interface circuit and a CF/SD card interface circuit; the wireless WiFi circuit and the Ethernet interface circuit provide external data and control interfaces, and external digital baseband signal waveforms are input into the high-speed large-capacity storage particles through external data interaction; through the interaction of external control instructions, the control signal generation module completes the generation and transmission of wireless signals of various specified technical systems, modulation styles, modulation parameters and other waveform parameters at specified time.

Technical Field

The invention belongs to the technical field of wireless signal transmitting equipment, and particularly relates to multi-channel general wireless signal transmitting equipment based on a software radio architecture.

Background

In many application fields of modern information society, the technical realization of wireless signal transmission is involved. In the prior art, the hardware architecture and the components of the transmitting device are determined or designed according to the technical characteristics or waveform parameters of the wireless signal to be transmitted, and the components usually include a baseband signal generating circuit, a modulator circuit, a synthetic local oscillator circuit, a quadrature mixer circuit, a filter circuit, a radio frequency small signal amplifier circuit, a radio frequency power amplifier circuit, and the like. If the technical characteristics or waveform parameters of the wireless signals to be transmitted need to be slightly changed, the design parameters of hardware circuits such as a baseband signal generating circuit, a modulator circuit, an integrated local oscillator circuit, a quadrature mixer circuit and a filter circuit need to be finely adjusted, and if the technical characteristics or waveform parameters of the wireless signals to be transmitted need to be greatly adjusted, the design schemes of the hardware circuits such as the baseband signal generating circuit, the modulator circuit, the integrated local oscillator circuit, the quadrature mixer circuit and the filter circuit need to be adjusted or redesigned. In addition, wireless transmitting devices with different application scenarios and requirements need to be adapted by designing different hardware circuits.

The development of modern software radio theory and technology lays a foundation for realizing generalized multi-channel wireless signal transmission, and the development of chip technologies such as modern high-performance FPGA chips, high-speed DAC chips, high-speed clock source chips, high-speed data bus chips and the like also lays an engineering technical foundation for constructing multi-channel general wireless signal transmitting equipment based on a software radio architecture. A general wireless signal transmitting channel based on a software radio framework can be constructed by utilizing a high-performance FPGA chip, a high-speed DAC chip, a high-speed clock source chip, a high-speed data bus chip and the like, wireless signal generating models and waveform parameters in related chips are changed through software programming, the generation of wireless signals of different technical systems, modulation styles, baseband parameters, modulation parameters and the like can be realized on the premise of not changing a hardware circuit, a high-capacity storage chip is utilized to store baseband waveforms or intermediate frequency waveforms (generated by Matlab simulation or other modes) of wireless signals to be transmitted, then hardware resources of the high-performance FPGA chip, the high-speed DAC chip, the high-speed clock source chip, the high-speed data bus chip and the like are utilized, and the baseband waveforms or the intermediate frequency waveforms can be moved to a specified radio frequency for transmission.

Disclosure of Invention

The invention aims to provide a multichannel universal wireless signal transmitting device based on a software radio architecture, which constructs a multichannel universal wireless signal generating and transmitting link based on the software radio architecture by adopting an FPGA chip, a DAC chip, a high-speed clock source chip, a high-speed data bus chip, a high-speed large-capacity storage chip and the like, and solves the real-time generation and transmission control problems of different wireless communication signals or interference signal technical systems, modulation styles, modulation parameters, baseband waveform parameters and the like under various application scenes through software programmability on the basis of a universal hardware circuit architecture.

In order to solve the technical problems, the invention is realized by the following technical scheme:

the invention relates to a multi-channel general wireless signal transmitting device based on a software radio framework, which comprises a signal generating module, an orthogonal up-conversion module, a broadband radio frequency power amplifier module, a radio frequency multiplexer and a broadband antenna;

the excitation signal generated by the signal generation module is used for moving the signal frequency to the appointed radio frequency through the orthogonal up-conversion module; the orthogonal up-conversion module is a broadband orthogonal mixing circuit;

the orthogonal up-conversion module transmits the frequency-converted signal to a radio frequency multiplexer; the radio frequency multiplexer is electrically connected with the broadband antenna;

the signal generation module is an 8-channel digital excitation signal generation module; the signal generation module comprises an FPGA chip, a DAC chip, a high-speed clock source chip, a high-speed bus interface circuit and large-capacity high-speed storage particles;

the FPGA chip is electrically connected with the four DAC chips through the high-speed interface circuit to generate 8 pairs of I/Q signals, and the DAC chips are used for filtering and amplifying the signals through the filtering and amplifying group and then transmitting the signals to the orthogonal up-conversion module;

the FPGA chip programs signals of waveform parameters such as a technical system, a modulation style, modulation parameters and the like which need to be transmitted in a wireless channel to generate corresponding baseband digital signals;

the DAC chip performs analog-to-digital conversion and orthogonal transformation on the received signals; the DAC chip controls the sampling rate, the frequency of the output intermediate frequency signal and the amplitude-phase parameter of the orthogonal output signal through variation;

the FPGA chip is electrically connected with the high-capacity high-speed storage particles through a high-speed bus interface circuit; and the large-capacity high-speed storage particles transmit signals to the FPGA chip.

Preferably, the frequency range of the multi-channel orthogonal signal output by the DAC chip is below 500 MHz.

Preferably, the high-speed clock source chip provides a high-speed clock for the FPGA chip and the DAC chip, and provides a local oscillation signal for the quadrature up-conversion module.

Preferably, baseband communication signal/interference signal waveforms of waveform parameters such as various technical systems, modulation patterns, modulation parameters and the like which are generated in advance through Matlab simulation or acquired in advance by a data acquisition system and need to be transmitted in a wireless channel are stored in the high-capacity high-speed storage particles.

Preferably, the FPGA chip is further connected with a WIFI interface control circuit, an ethernet interface circuit and a CF/SD card interface circuit; the wireless WiFi circuit and the Ethernet interface circuit provide external data and control interfaces, and external digital baseband signal waveforms are input into the high-speed large-capacity storage particles through external data interaction; through the interaction of external control instructions, the control signal generation module completes the generation and transmission of wireless signals of various specified technical systems, modulation styles, modulation parameters and other waveform parameters at specified time.

The invention has the following beneficial effects:

1. the invention constructs a multi-channel general wireless signal generating and transmitting link based on a software radio framework through a high-performance FPGA chip, a high-speed DAC chip, a high-speed clock source chip, a high-speed data bus chip, a high-speed large-capacity storage chip and the like, and solves the real-time generation and transmission control problems of different wireless communication signals or interference signal technical systems, modulation styles, modulation parameters, baseband waveform parameters and the like under various application scenes through software programmability on the basis of a general hardware circuit framework.

2. By adopting a universal and high-performance hardware circuit, the invention only needs to start different application software and set different signal waveform parameters under different application scenes, so that the flexibility (communication signal/interference signal technical system, modulation style, modulation parameters, baseband waveform parameters and the like) and performance (anti-interference performance for military or civil communication and interference efficiency for military or civil interference) of the invention are greatly improved no matter the invention generates and transmits radio communication signals or radio interference signals, and the integration of radio communication/radio interference can be realized.

3. By adopting the high-speed large-capacity storage chip, the invention can store waveform data prepared in advance (military or civil baseband communication signals/interference signal waveforms generated by Matlab and other simulation tools) in the high-speed large-capacity storage chip of the module through the data interface, thereby greatly reducing hardware resources occupied by radio communication signals or interference signals of complex technical systems and modulation patterns generated by FPGA and complexity of bottom layer programming, and providing better guarantee for generalization and high performance of a core module of transmitting equipment.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a system block diagram of a multi-channel general wireless signal transmitting apparatus based on a software radio architecture of the present invention;

fig. 2 is a block diagram of an 8-channel digital excitation signal generation module.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention is a multi-channel general wireless signal transmitting device based on software radio architecture, which includes a signal generating module, an orthogonal up-conversion module, a broadband radio frequency power amplifier module, a radio frequency multiplexer, and a broadband antenna;

the excitation signal generated by the signal generation module is transferred to the appointed radio frequency through the orthogonal up-conversion module; the orthogonal up-conversion module is a broadband orthogonal mixing circuit; the orthogonal up-conversion module transmits the frequency-converted signal to a radio frequency multiplexer; the radio frequency multiplexer is electrically connected with the broadband antenna;

as shown in fig. 2, the signal generating module is an 8-channel digital excitation signal generating module; the signal generation module comprises an FPGA chip, a DAC chip, a high-speed clock source chip, a high-speed bus interface circuit and large-capacity high-speed storage particles;

the FPGA chip is electrically connected with the four DAC chips through the high-speed interface circuit to generate 8 pairs of I/Q signals, and the DAC chips are used for filtering and amplifying the signals through the filtering and amplifying group and then transmitting the signals to the orthogonal up-conversion module;

by adopting a mode that 1 high-performance FPGA chip with a plurality of high-speed DAC chips and each DAC chip can output a plurality of pairs of orthogonal signals, the output of multi-channel orthogonal signals is ensured;

the FPGA chip programs signals of waveform parameters such as a technical system, a modulation style, modulation parameters and the like which need to be transmitted in a wireless channel to generate corresponding baseband digital signals; the DAC chip performs analog-to-digital conversion and orthogonal transformation on the received signals; the DAC chip controls the sampling rate, the frequency of the output intermediate frequency signal and the amplitude-phase parameter of the orthogonal output signal through variation;

the FPGA chip is electrically connected with the high-capacity high-speed storage particles through a high-speed bus interface circuit; and the large-capacity high-speed storage particles transmit signals to the FPGA chip.

Preferably, the frequency range of the multi-channel orthogonal signal output by the DAC chip is below 500MHz, and for the output signal with the frequency above 500MHz (for example, 500MHz to 6000MHz), the frequency shift is performed by the broadband orthogonal mixer circuit.

Preferably, the high-speed clock source chip provides a high-speed clock for the FPGA chip and the DAC chip, and provides a local oscillation signal for the quadrature up-conversion module.

Preferably, baseband communication signal/interference signal waveforms of waveform parameters such as various technical systems, modulation patterns, modulation parameters and the like which are generated in advance through Matlab simulation or acquired in advance by a data acquisition system and need to be transmitted in a wireless channel are stored in the high-capacity high-speed storage particles.

Preferably, the FPGA chip is further connected with a WIFI interface control circuit, an ethernet interface circuit and a CF/SD card interface circuit; the wireless WiFi circuit and the Ethernet interface circuit provide external data and control interfaces, and external digital baseband signal waveforms are input into the high-speed large-capacity storage particles through external data interaction; through the interaction of external control instructions, the control signal generation module completes the generation and transmission of wireless signals of various specified technical systems, modulation styles, modulation parameters and other waveform parameters at specified time;

the FPGA chip is connected with a control computer/mobile phone/PAD control end through a WIFI interface control circuit/Ethernet interface circuit; the control computer/mobile phone/PAD control terminal can set the working state of the module and the waveform parameters of each channel.

The high-capacity high-speed storage particles and the CF/SD card interface circuit are used for conveniently and directly generating corresponding intermediate-frequency signal waveforms or radio-frequency signals of low frequency bands (such as the frequency in the range of 1-500 MHz) through a high-performance FPGA chip and a high-speed DAC chip by using target signal waveform data acquired and stored by acquisition equipment and target signal waveform data simulated by MATLAB simulation for storage.