高速采集电路中1024点FFT算法的研究与实现

Research and Implementation of 1024 Point FFT Algorithm in High Speed Acquisition Circuit

作为数字信号处理的核心技术之一,快速傅里叶变换(FFT)使离散傅里叶变换(DFT)的运算时间缩短了几个数量级。因此,对FFT检测算法及其实现方法的研究具有很强的理论和实现意义。本文创新性地提出了基于FPGA的1024点FFT检测算法,并且给出该检测算法实现的仿真过程以及与常用FFT检测算法的对比分析。结果证明基于FPGA的1024点FFT检测算法与Matlab计算结果一致,并且十级流水线架构增加了数据吞吐量,降低了在FPGA上综合编译的难度。

As one of the core technologies for digital signal processing,the Fast Fourier Transform(FFT)reduces the computation time of the Discrete Fourier Transform(DFT)by several orders of magnitude.Therefore,research on FFT detection algorithms and their implementation methods holds strong theoretical and implementation significance.This paper innovatively proposes a 1024-point FFT detection algorithm based on FPGA,proposes the simulation process of this detection algorithm and performs a comparative analysis with commonly used FFT detection algorithms.The results indicate that the 1024-point FFT detection algorithm based on FPGA is consistent with the Matlab calculation results,and the tenlevel pipeline architecture increases the data throughput and reduces the difficulty of comprehensive compilation on FPGA.