陕西理工学院通信原理课程设计题目基于SIMULINK的通信系统仿真学号1113024132学生姓名周龙刚专业名称通信工程所在系(院)物理与电信工程学院指导教师侯宝生2014年2月24日题目基于SIMULINK的模拟通信系统的仿真(线性调制)摘要在模拟通信系统中,由模拟信源产生的携带信息的消息经过传感器转换成电信号,模拟基带信号在经过调制将低通频谱搬移到载波频率上适应信道,最终解调还原成电信号;在数字传输系统中,数字信号对高频载波进行调制,变为频带信号,通过信道传输,在接收端解调后恢复成数字信号。本文应用了幅度调制以及键控法产生调制与解调信号。本论文中主要通过对SIMULINK工具箱的学习和使用,利用其丰富的模板以及本科对通信原理知识的掌握,完成了AM、DSB、SSB、2ASK、2FSK、2PSK三种模拟信号和三种数字信号的调制与解调,以及用SIMULINK进行设计和仿真。首先我进行了两种通信系统的建模以及不同信号系统的原理研究,然后将学习总结出的相应理论与SIMULINK中丰富的模块相结合实现仿真系统的建模,并且调整参数直到仿真波形输出,观察效果,最终对设计结论进行总结。关键词通信系统调制SIMULINKTitleBasedonSIMULINKcommunicationssystemsimulationAbstractInsimulationofcommunicationsystem,producedbysimulationsourcecarryinformationnewsaftersensorintoelectricalsignal,analogbasebandsignalafteralowpassspectrumwillmovetoadapttothecarrierfrequencychannel,eventuallydemodulationreductiveintoelectricalsignals;Indigitaltransmissionsystem,digitalsignaltothehighfrequencymodulatedcarrier,abandsignal,throughthechanneltransmission,atthereceivingendafterdemodulationbackintoadigitalsignal.Thispaperappliedtheamplitudemodulationandkeyingmethodproducemodulationanddemodulationsignal.ThispapermainlythroughSimulinktoolboxthestudyanduseoftheuseofitsrichtemplatesandtheundergraduatecoursecommunicationprincipleoftheknowledge,andcompletedtheAM,DSB,SSB,2ASK,2FSK,2PSKthreesimulationsignalandthreekindsofdigitalsignalmodulationanddemodulation,andusingSimulinkfordesignandsimulation.FirstItwokindsofcommunicationsystemmodelandtheprincipleofdifferentsignalsystemresearch,andthenwillstudysummarizedthecorrespondingtheoryandSimulinkrichmoduleincombiningthemodelingofthesimulationsystemisrealized,andadjusttheparametersofthesimulationoutputwaveformuntil,observingeffect,ultimatelyfordesignconclusionsweresummarizedinthispaper.KeywordsCommunicationsystemmodulationSimulink目录1.前言................................................................11.1选题的意义和目的..................................................11.2国内外研究现状....................................................21.3通信系统及其仿真技术..............................................31.4毕设的主要内容....................................................42.SIMULINK与通信系统仿真..............................................52.1SIMULINK和其模块简介.............................................52.2通信系统仿真的研究方法和技术路线..................................52.2.1通信系统仿真的研究方法........................................52.2.2通信系统仿真的技术路线........................................63.现代通信系统的介绍..................................................73.1通信系统的一般模型................................................73.2模拟通信系统模型..................................................73.2.1模拟通信系统模型..............................................73.3模拟通信和数字通信的区别和优缺点..................................94.通信系统的仿真原理及框图...........................................124.1模拟通信系统的仿真原理...