Design And Implementation Of Hardware Based On SoC Communication Signal Analyzer

Broadband communication signal analyzer is an important test instrument used in wireless communication,remote sensing telemetry and other systems.It is based on software radio related technology and its main functions include spectrum analysis and vector signal analysis.Based on the SoC communication signal analyzer as the project foundation,this paper carries out a new research and design on the communication signal analyzer hardware.The platform adopts the new system-on-chip“FPGA+ARM”architecture,which is not only small in size and power consumption,but also in real-time performance.Channelized spectrum analysis and other technologies enable the signal analyzer to obtain high-resolution spectrum over a wide frequency band.Therefore,the SoC-based communication signal analyzer studied in this paper has important theoretical and application values.This article first describes the technologies used at home and abroad,and discusses the future development trends in this area.Combined with the specific project requirements,the final goals to be achieved in this design are determined.Next,an overview of the communication signal analysis system is given,and the design and technical specifications of the analyzer hardware overall plan are described.The sub-module design and key technologies are summarized in several parts,including the data involved in the solution:Acquisition board hardware circuits,IF signal preprocessing,channelized spectrum analysis,etc.Then the detailed analysis and discussion are made on the theoretical techniques used in each module and the implementation process of the on-chip system.Specifically,1^st.Combining the sampling theorem and project requirements,determine the technical specifications of the data acquisition board,complete the drawing of the schematic diagram,and describe the power supply,clock,and data circuits in several parts.Then complete the logic design of data acquisition and IF signal preprocessing and implement it on the SoC platform.2^nd.Combining the multi-phase DFT structure,a method of channelized signal analysis based on polyphase DFT structure is proposed and verified by simulation.The simulation results are in line with the expected requirements,and the correctness of channel analysis of multi-phase DFT structure is explained.Then,it completes the logic design on the hardware platform and collects the channel-ized output data to make a higher-frequency resolution spectrogram.This illustrates the advantages of the channelization process based on the polyphase DFT structure for spectrum analysis.3^rd.Because the hardware platform of this design is based on the system-on-chip SoC,the internal data transmission of the signal analyzer needs to meet the related technologies such as the AXI transmission protocol,and the three AXI Interconnect interconnection matrices are proposed for the purpose of achieving high throughput in the data transmission design.With the design methods of two AXI_HP and one AXI_GP port,the entire data transmission system is optimized,and the real-time performance of signal analysis is ensured.4^th.Test and analysis of each functional module and give the results,including data acquisition,IF signal preprocessing,channelization spectrum analysis,Zynq internal data exchange,USB3.0data transmission and so on.Through the debugging and verification of SoC communication signal analyzer hardware system and its internal logic,each module can work normally,and the test results basically meet the expected requirements.