基于FPGA的软件无线电信道处理研究

Study of SDR Channel Processing Based on FPGA

文章重点研究了软件无线电(Software Defined Radio,SDR)中不同信道的处理技术,其技术关键在于构建不同频段的数字滤波器进行不同信道信息的接收处理。提出了基于FPGA的软件无线电信道处理方案,并与传统的DSP方案及算法做了对比。在建立软件无线电信道模型的基础上,详述了适于FPGA结构的分布式算法,并得出了该算法在FPGA中实现的模块结构图。研究认为,相比DSP方案,FPGA方案在工作速度及性能上有较大优势。

The paper studies the processing technique of different channels in SDR （software defined radio）. The key technique is to design digital filters of different frequency bands to receive the information of different channels. The method of SDR channel process based on FPGA is proposed and compared to traditional DSP method and algorithm. Based on founding the model of SDR channel processing, the distributed algorithm for FPGA is stated in detail and the block diagram of the algorithm achievement in FPGA is gotten out. It is believed that the FPGA method is better than DSP on speed and performance in this study.