基于FPGA的FFT计算方法研究

由于目前对快速码捕获速度的要求越来越高,而目前使用比较普遍的码捕获方法是基于FFT的快速码捕获.因此开发出一种快速简单实用的FFT计算方法势在必行.利用FPGA的丰富资源以及灵活的IPCore功能,使设计流程大大简化,为实现FFT算法提供了一种方便快捷的方法.仿真和实验结果证明,该方法准确可靠,计算速度快.

Analysis of FFT Based on FPGA

This paper analyzes the theory of FFT,and presents a new method to compute FFT which is based on FPGA.The design flow is more simply,because FPGA is resourceful,easy to carry out and pipelined structure,especially the IPCore,which offers a reference for FFT computation.After simulation and experiment,the results show that,this method use almost half time comparing to previous methods.