高阶FIR滤波器的计算机设计与FPGA实现  

Computer Design and FPGA Implementation of High-order FIR Filter

作　　者：华玲[1] 常建平[1] 

机构地区：[1]南京航空航天大学信息科学与技术学院,江苏南京210016

出　　处：《现代电子技术》2011年第2期99-102,共4页Modern Electronics Technique

摘　　要：根据有限冲击响应(FIR)数字滤波器的原理,综合运用Matlab和FPGA的QuartusⅡ两大计算机软件,提出了一种利用QuartusⅡ中参数化宏功能模块(LPM)的FIR滤波器设计方法。首先利用Matlab设计滤波器系数,再利用Quar-tusⅡ的LPM构造的乘法器和加法器,最终得到滤波结果。相比分布式算法,该法在信号处理速率要求不高,且滤波器阶数较高的情况下,可更加简单地实现滤波效果。最终在Matlab和QuartusⅡ的基础上,实现了64阶的高阶FIR数字滤波器电路的设计与仿真。According to the FIR （finite impulse response ） digital filter theory, a design method of FIR filter with macro parameter modules in Quartus Ⅱ is put forward in combination with Matlab and FPGA＇s Quartus Ⅱ computer softwares. Firstly, filter coefficients are designed with Matlah, and then adders and multipliers are constructed with macro parameter modules in Quartus Ⅱ to obtain the filter results. Compared to distributed algorithms, signal processing rate is not demanded critically, and in the case of higher order filter, this method is more simple to achieve the filtering effect. Eventually on the basis of Matlab and Quartus Ⅱ , the design and simulation of a 64-order FIR digitle filtering circuit is realized.

关 键 词：FIR滤波器 MATLAB Quartus Ⅱ参数化功能模块库 

分 类 号：TN712-34[电子电信—电路与系统]