PAGEIIf.i.r滤波器毕业论文【摘要】本文主要是对FIR的基本原理进行概述。对直接型，级联型，第一类线性相位等结构图进行了分析。采用了窗函数法，小波分析法，频率采样法，切比雪夫法来设计FIR数字滤波器。分析了FIRDF的特点之后,根据小波逼近方法利用多个小波函数来逼近理想滤波器的频率特性，很容易设计多通带的带通滤波器和多通带移相器。采用MATLAB软件对FIR数字滤波器进行了仿真。利用FPGA来实现FIR数字滤波器，对FIR数字滤波器的内部模块结构进行了仿真。通过硬件描述语言给出了利用FPGA器件进行数字系统设计的设计流程以及模块仿真。采用了TMS320C54芯片来实现，应用FIRS指令来进行编程。【关键词】：FIR、MATLAB、TMS320C54、FPGA、【Abstract】ThispaperisFIR,thebasicprinciplesoutlined.Directtype,Cascade,thefirstclassoflinearphasestructurechartanalysis.Usingthewindowmethod,waveletanalysis,thefrequencyofsampling,ChebyshevmethodtodesignFIRdigitalfilter.FIRDFanalysisofthecharacteristics,Accordingtowaveletapproximationmethodusingwaveletfunctionovertoapproximatetheidealfrequencyofthefiltercharacteristics,veryeasytodesignamulti-band-passfiltersandmulti-bandphaseshifter.MATLABsoftwareFIRdigitalfilterforthesimulation.FPGAtoachieveFIRdigitalfilter,theFIRdigitalfiltermoduleintheinternalstructureofthesimulation.ThroughhardwaredescriptionlanguageistheuseofFPGAdevicesforDigitalSystemDesignProcess.TMS320C54chipusedtoachieveapplicationFIRsinstructionsforprogramming.【Keyword】FPGA、FIR、MATLAB、TMS320C54目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc170066396"【摘要】PAGEREF_Toc170066396\hIHYPERLINK\l"_Toc170066397"【Abstract】PAGEREF_Toc170066397\hIIHYPERLINK\l"_Toc170066398"前言PAGEREF_Toc170066398\h1HYPERLINK\l"_Toc170066399"第1章滤波器的基本概念PAGEREF_Toc170066399\h2HYPERLINK\l"_Toc170066400"1.1滤波器的原理和分类PAGEREF_Toc170066400\h2HYPERLINK\l"_Toc170066401"1.1.1滤波器的实现步骤PAGEREF_Toc170066401\h2HYPERLINK\l"_Toc170066402"1.1.2采样定理PAGEREF_Toc170066402\h2HYPERLINK\l"_Toc170066403"1.2滤波器的技术指标PAGEREF_Toc170066403\h3HYPERLINK\l"_Toc170066404"1.3数字滤波器的系统特性PAGEREF_Toc170066404\h3HYPERLINK\l"_Toc170066405"1.3.1离散系统的实现PAGEREF_Toc170066405\h3HYPERLINK\l"_Toc170066406"1.3.2状态和张弛系统PAGEREF_Toc170066406\h5HYPERLINK\l"_Toc170066407"1.3.3因果性和可实现系统PAGEREF_Toc170066407\h5HYPERLINK\l"