GSM移动通信系统中低通滤波器的设计与仿真.doc

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
学生姓名: xxx
指导教师: xxx
所在分院: 信息工程学院
专业: 通信工程
班级: 统本通工0901
二O一三年五月
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 munication 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,
目录
1 绪论 1
课题研究的意义 1
国内外研究现状 1
毕业论文的内容 1
MATLAB软件及Simulink平台的概述 2
2 IIR数字滤波器设计及其MATLAB实现 5
IIR数字滤波器的原理及特点 5
IIR滤波器的结构 5
直接型 5
级联型 7
并联型 8
常用的滤波器原型 8
巴特沃斯低通滤波器 9
2