用于SoPC的FFT运算模块设计及实现

Design and Implementation of SoPC-compatible FFT Module

介绍了Cooley-Tukey基4频域抽取FFT的硬件设计方法。设计采用迭代实现,点数为4096时占用的FPGA组合逻辑资源比级联流水线实现节省80%以上。同时介绍了Avalon总线接口模块的设计,利用这个模块可以把FFT运算模块接入SoPC。

This paper proposes a design and implementation of Cooley-Tukey radix-4 decimation-in-frequency FFT that works in an iterative manner.Taking 4096 points FFT as an example,this design saves 80% FPGA resource compared with a pipeline-cascaded implementation.The design of Avalon interface module which is capable of making the FFT module SOPC-compatible is also detailed.