基于OFDM技术FFT的FPGA研究

On the FFT Processor by FPGA Implementation Based on the OFDM Technology

本文对快速傅立叶变换,基本运算单元,蝶形运算的位数,8k点FFT实现,FFT模块实现IFFT等几方面阐述了基于OFDM技术的FFT的设计思路,给出了FFT实现的总体框架,并对存储器的控制,运算模块,FFT的地址,旋转因子,数据的锁存进行了硬件的设计,通过Matlab工具箱中的FFT函数进行了仿真.

This article elaborates on the FFT design idea according to OFDM technology from the aspects of the basic operation,fast Fourier transform,the butterfly unit digit,8k point FFT implementation,FFT modules and IFFT,providing its overall FFT framework,and making hardware design of the control and operation of memory module,FFT,address,the latch of the data.Through Matlab toolbox FFT function is simulated.