通信工程专业 《通信原理》课程设计
题 目 模拟调制系统的研究
学生姓名 王 学号10000000670 所在院(系) 物理与电信工程学院 专业班级 通 信 工 程 专 业 100 班 指导教师 完成地点 物理与电信工程学院实验室
2013年 3 月 22 日
通信工程专业课程设计任务书
院(系) 物理与电信工程学院 专业班级 通 信 工 程 专 业103班 学生姓名 王 一、课程设计题目 模拟调制系统的研究（AM,DSB,SSB,FM的调制与解调） 二、课程设计工作自 2013 年 3 月 4 日 起至 2013 年 3 月 22 日止 三、课程设计进行地点: 物 理 与 电 信 工 程 学 院 实 验 室 四、课程设计的内容要求：
在通信技术的发展中，通信系统的仿真是一个技术重点。这次课程设计的重点就是模拟通信系统中的调制解调系统的基本原理以及仿真，并在MATLAB软件平台上的仿真实现几种常见的模拟调制方式。最常用最重要的模拟方式是用正弦波作为载波的幅度调制。常见的调幅（AM）,双边带（DSB），单边带（SSB）等调制就是幅度的几个典型实例。
在线性调制系统中，此次课程设计主要用调幅（AM）,双边带（DSB）和单边带（SSB），调频（FM）等调制为说明对象，从原理等方面进行分析阐述并进行仿真分析，说明其调制原理，并进行仿真分析。利用MATLAB对模拟调制系统进行仿真，结合MATLAB模块和Simulink工具箱的实现，对仿真结果进行分析，从而能够更深入地掌握通信原理中掌握模拟调制系统的相关知识
指 导 教 师 系(教 研 室) 通 信 工 程 系 接受任务开始执行日期 2013年3月4日 学生签名
模拟调制系统的研究
王
（xx理工学院物理与电信工程学院通信100班，陕西 ）
指导教师：
[摘 要] 首先描述了调制与解调, 其次详细地介绍了线性模拟调制,再利用Matlab软件进行线性调制和解调程序设计（包括AM,DSB,SSB,FM），输出显示调制信号、载波信号以及已调信号波形，并输出显示三种信号频谱图。对产生波形进行分析，并通过参数的改变，观察波形变化，分析实验现象
[关 键 词] 线性调制；MATLAB；信号频谱；解调
Analog modulation system research
Wang
(Grade10,Class3,Major of Communication Engineering，School of Physics and
telecommunication Engineering of,)
Tutor:
[Abstract] First describes the modulation and demodulation, the second linear simulation
modulation are introduced in detail, using Matlab software to design linear modulation and demodulation process (including AM, DSB, SSB, FM), the output display modulation signal and carrier signal and modulated signal waveform, and the output shows three kinds of signal spectrum. Analyze the generated waveform, and by the changes of parameters, observe the waveform changes, the analysis of experimental phenomena
[Key words] Linear modulation; MATLAB; The signal spectrum; demodulation
目录
1. 绪论······························································1
1.1通信系统原理···················································1 1.2模拟通信系统原理···············································1 1.3调制原理·······················································2 1.4调制的种类·····················································2 1.5 MATLAB简介····················································3 1.6 MATLAB仿真在现代通信中的应用··································3
2.模拟调制与解调···················································5
2.1普通调幅（AM）··················································5 2.2双边带调制（DSB）···············································6 2.3单边带调制（SSB）···············································7 2.4普通调频（FM）··················································9
3. 调制与解调的MATLAB仿真·······································12
3.1 AM的框图与仿真···············································12 3.2 DSB的框图与仿真··············································14 3.3 SSB的框图与仿真··············································15 3.4 FM的框图与仿真···············································17 总 结································································19 致 谢·······························································20 参考文献····························································21
模拟调制系统的研究通信原理课程设计报告通信工程无需修改
