GSM移动通信系统中低通滤波器的设计与仿真_本科毕业论文.doc

西安欧亚学院本科毕业论文（设计） 西安欧亚学院 本科毕业论文（设计） 题 目： GSM移动通信系统中低通滤 波器的设计与仿真 GSM移动通信系统中低通滤波器的设计与仿真 摘要：本文应用MATLAB软件中的Simulink平台分别研究了FIR数字低通滤波器和IIR数字低通滤波器的设计方法和实现方法，并进行模拟仿真设计，以显示本文所介绍数字低通滤波器的多种特性。 在无限脉冲响应（IIR）数字低通滤波器设计中，应用了冲击响应不变法和双线性Z变换法，先进行模拟滤波器的设计，然后把模拟滤波器转换为数字滤波器，最后进行滤波器的频带转换，使用MATLAB软件按两种方法编辑程序并通过图形展示IIF低通滤波器的各种参数和性能指标。在有限脉冲响应（FIR）低通数字滤波器设计中，讨论了FIR线性相位滤波器的特点和用窗函数法设计FIR滤波器两个问题。这两类低通滤波器整个设计过程都是按照理论分析、编程设计、模拟仿真、具体实现的步骤进行的。 关键词：数字低通滤波器、MATLAB、Simulink GSM mobile communication system design and simulation of the low-pass filter Abstract：In this paper, the application of MATLAB software Simulink platform respectively studied the FIR digital low-pass filter and IIR low-pass filter design methods and implementation method, and carries on the simulation design,to display a variety of characteristics of digital low-pass filter, presented in this paper. In infinite impulse response (IIR) digital low-pass filter design, the application of shock response is not political reform and bilinear z-transform method, first for the design of analog filter, then converted to a digital filter, the analog filter to filter the frequency conversion, using MATLAB software according to the two methods of editing program and through the graphic display of IIF low-pass filter parameters and performance indicators. In finite impulse response (FIR) low-pass digital filter design, discussed the characteristics of the FIR linear phase filter and FIR filter with window function method with two problems. These two types of low-pass filter the whole design process is in accordance with the theoretical analysis, programming design, simulation and implementation steps. Keywords: digital low-pass filter, the MATLAB, Simulink, PAGE \* MERGEFORMAT PAGE \* MERGEFORMAT II 目录TOC \o 1-3 \h \u 动态的系统的仿真、建立模型和综合性能分析的集成环境。MATALB的环境中用户可以不用书写大量的具体程序，用户可以通过既简单而又直观的操作，就能构创建出繁杂的系统。Simulink还具有结构清晰和流程明了、适应范围广及仿真结构精细、使用效率高、与实际贴近、灵活多变等诸多的优点，通过以上优点Simulink被大量应用于 数字信号处理和控制理论中的相繁杂多变的