基于FPGA的并行数字信号处理技术研究  

Research on Parallel Digital Signal Processing Technology Based on FPGA

作　　者：汪甜 章毅[1] 吴志光[1] WANG Tian;ZHANG Yi;WU Zhiguang(Dept.of Mechanical and Electrical Technology,Chizhou Vocational and Technical College,Chizhou 247000,China)

机构地区：[1]池州职业技术学院机电技术系,安徽池州247000

出　　处：《淮海工学院学报（自然科学版）》2018年第4期30-33,共4页Journal of Huaihai Institute of Technology:Natural Sciences Edition

基　　金：安徽省教育厅高校自然科学研究重点项目(KJ2018A0187);安徽省高校省级质量工程重大教研项目(2017jyxm0684);安徽省高校省级质量工程教学团队项目(2017jxtd079)

摘　　要：采用传统技术进行数字信号处理受到信号干扰和时延影响,导致处理效果较差,因此提出了基于FPGA的高效FFT并行数字信号处理技术.依据FFT实现流程,设计信号存储单元.在该单元内采用RAM随机存取存储器来存储数据,使运算结果显示在实虚部.利用FPGA的FFT四进制计算方式,将运算结果所产生的旋转因子读写地址映射到二维平面上,改善信号干扰问题,为基带采样率控制提供波特率二进制数字信号.通过控制输入数字信号数量,可达到控制相位稳定寻址目的,根据寻址结果,实现对并行数字信号的处理.通过实验对比结果可知,采用FPGA的高效FFT技术能够实现并行数字信号高效处理的目的.The traditional digital signal processing technology is affected by signal interference and time delay,which results in poor processing effect.An efficient FFT parallel digital signal processing technology based on FPGA is proposed.According to the FFT implementation process,the signal storage unit is designed.RAM random access memory is used to store data in this unit,so that the operation results can be displayed in real and virtual parts.By using the FFT quaternary calculation method of the FPGA,the rotation factor read-write address generated by the calculation results is mapped to the two-dimensional plane,which improves the signal interference problem and provides the baud rate binary digital signal for the baseband sampling rate control.By controlling the number of input digital signals,the purpose of controlling phase stable addressing can be achieved.According to the addressing results,parallel digital signal processing can be realized.The experimental results show that the high efficiency FFT technology based on FPGA can achieve the purpose of parallel digital signal processing.

关 键 词：FPGA 并行 数字信号 FFT 四进制 

分 类 号：TN911.72[电子电信—通信与信息系统]