Design Of Software-Defined Radio Signal Processor Based On ASIP

Current Software Defined Radio(SDR)processing systems,which based on programmable hardware like FPGAs and DSPs still have some unavoidable disadvantages,such as sys-tem design over-reliance on specific hardware,and with less scalability and poor portability.Besides,processing system that based on FPGAs and DSPs is difficult to balance the perfor-mance,system power consumption and design flexibility in general.For this problem,this paper designs an SDR signal processing system based on ASIP(re-ferred as "processing machine").The processing machine includes two parts:a general-purpose digital circuit interface board(referred as "interface board")and a heterogeneous multi-core processor based on ASIP(referred as "processor").The interface board provides scalability and portability for software radio processing systems.It has various standard dig-ital bus interfaces and is easy to transmit and communicate with other devices,including but not limited to Gigabit Ethernet interface,HDMI multimedia interface,CAN bus interface,I2C interface,USB 2.0 interface,SPI Interface and UART interface.The processor provides processing performance and design flexibility for software radio processing systems.With the Xilinx Zynq FPGA platform,it first realized the design of a single CPU based on ASIP,and thus formed a CPU array,realized the design of a general-purpose embedded heteroge-neous multi-core processor.In this processor,embedded ARM hard The core provides basic system control and human-computer interaction,while the ASIP array provides high-speed digital signal processing operations and data processing operations.In this paper,the processing machine is applied to the millimeter-wave radar processing system,and a complete radar processing algorithm is designed for the processing system,and the corresponding processor program is written.The final test results show that the processor solves the problem of high power consumption,poor performance and insufficient design flexibility of the software radio system composed of discrete CPU and FPGA device through the Designed hardware processing platform and corresponding software.Therefore,the processing machine can be used well as a processing platform and computing platform in radar,communication and other software radio processing systems,the development of software radio system has a good role in promoting.