基于FPGA的数字滤波系统设计

为研究基于FPGA的数字滤波系统的设计与实现过程,根据数字滤波系统的基本工作原理在芯片内部设计了模数转换采样控制、基于分布式算法的FIR滤波器以及基于FFT IP核应用的频谱分析电路等功能模块,并给出了QUARTUS Ⅱ平台上的系统设计时序仿真波形.实验结果表明,相比于一般实现方法,基于FPGA实现的数字滤波系统具有高速灵活的优点,FPCA可广泛应用于高速数字信号处理领域.

Design of Digital Filtering System Based on FPGA

This paper discusses the design and realization of digital filtering system based on FPGA. Circuit mod-ules, including A/D sampling control, FIR filter based on distributed algorithm and frequency analysis circuit baaed on FFT IP core, which are the major parts of the system, are designed in the chip according to the digital filtering principle, and the simulation waveforms in Quartus Ⅱ are given too. The experiment results show that the method dis-cussed in the paper has the advantages of high speed and flexibility, and FPGA could be widely used in the high speed digital signal processing research areas.