Research And Design Of Wireless Signal Transceiver Based On Software Radio

Software radio technology is a technology that uses software to replace part of the hardware circuit to realize signal processing function.Software radio can be regarded as a general data processing hardware platform,providing users with the ability to send and receive data,computing power,storage capacity and other resources.Software radio’s upper application of software radio is realized through programming.The theory of software radio has been put forward for more than thirty years.Its application has been extended from military communications to all aspects of people’s daily life.Advances in technology and technology have made the performance of the software radio continuously improve,while the volume and power consumption has been reduced,and its future has broad application prospects in the fields of medical,transportation and tourism.Research on the software radio technology is of great value.In this paper,we study the principle of the software radio,and focus on the comparison of the structure of the RF front-end of the software radio,making comparison and analysis of five types of common RF structures including super heterodyne structure,image noise suppression structure,low IF structure,digital intermediate frequency structure and zero IF structure.The circuit designs of the FPGA,DSP,clock module,power supply module and other modules of the software radio platform are all completed,and the PCB routing of the circuit board is also finished.A number of functional modules are also realized on the FPGA chip,including NIOS soft core,data sending and receiving buffer module and signal quadrature mismatch compensation module.