关键词: FFT, FPGA, IP核, 加窗处理

Abstract:

This paper designs a high speed and efficiency FFT system based on FPGA IP Core.For the leakage of frequency spectrum caused by the truncation of non integral multiple of signal period,a method for restraining leakage of frequency spectrum by windowing the input signal is proposed.This design is simulated with Modelsim and Matlab,and verified on the Altera Cyclone II hardware platform.The results show that the system has good performance with significant improvement.

Key words: FFT;FPGA;IP Core;Add the window processing