基于FPGA的1024点快速傅里叶处理器设计

在对基-2FFT算法原理进行初步分析的基础上,设计了一种1 024点FFT处理器,在基于Xilinx公司的FPGA芯片的基础上,进行了控制单元、数据存储单元、选择因子生成单元和蝶形运算单元的设计.采用verilog HDL语言编程,在ISE平台上编译,利用modelsim软件进行仿真测试.测试结果表明该1 024点FFT处理器在时钟频率为100MHz情况下,处理时间为51.9μs,对于基-2处理器结构,已达到较高的运算速度.

1024 Points Fast Foutier Transform Based on FPGA

The principle of the radix-2 FFT algorithm was analyzed,and a kind of 1 024 points radix-2 FFT processor was described.Based on the FPGA chips manufactured by Xilinx Company,control unit,data storage unit,select factor generation unit,and butterfly operation unit were designed.The program was written by verilog HDL language,and was compiled under ISE environment.The modelsim simulation software was used to run simulation for the designed system.The results indicated that processing time spent 51.9 μs for 1 024 points radix-2 FFT processor when clock frequency was 100MHz.This is a higher processing speed for radix-2 FFT processor structure.