基于FPGA的FIR滤波器的设计与实现

Design of FIR Filter Based on FPGA

提出了一种基于FPGA的F IR滤波器设计方案。介绍了基于FPGA的F IR滤波器的数字信号处理的算法设计,采用直接型的基本结构来设计,通过1位乘以8位的乘法,然后再移位相加的方法即可得到结果,其运算效率明显提高,并结合先进的EDA软件进行高效的设计和实现,并给出了用M ax+P lusⅡ运行的仿真结果。该设计对FPGA硬件资源的利用高效合理,用VHDL编程,在FPGA中实现了高采样率的F IR滤波器。

This paper introduces the design scheme of FIR filter based on FPGA,introduces that the design technology of FIR filter based on FPGA about digital system processing arithmetic. FIR filter adopts the basic structure of direct type ,the results are got by the multiplication of 1×8,then shifting and adding. Integrating advanced software of EDA to design and achieve,and giving some emulator results. This design makes high use of hardware resource about FPGA,programming with VHDL language,achieving FIR filter with high sampling level based on FPGA.