pcm通信系统性能分析与matlab仿真

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1、课程设计报告书专用纸淮海工学院课程设计报告书课程名称：通信系统的计算机仿真设计题目：PCM通信系统性能分析与MATLAB仿真系（院）：电子工程学院学期：10-11-2专业班级：通信工程姓名：学号：评语：成绩：签名：日期：15课程设计报告书专用纸1绪论···························································31.1研究背景与研究意义···········································31.2课程设计的目的和任务······································

2、···31.3可行性分析····················································32PCM通信系统···················································42.1PCM通信系统的基本模型········································42.2PCM通信系统的编码（基于13折线法）····························53PCM通信系统的主要模块·······································63.1信源··

3、·························································63.2基带信号的处理················································63.2.1时域信号的抽样················································63.2.2量化与编码····················································63.2.3信道编码··········································

4、···········615课程设计报告书专用纸3.3调制/解调·····················································73.4信道··························································73.5传输质量分析···················································74MATLAB对PCM通信系统的仿真··································74.1MATLAB主要模块及参数设置··········

5、···························74.2PCM的仿真图和结果分析········································84.2.1已抽样信号时域图··············································84.2.2已抽样信号频谱图···············································94.2.3误码率——信噪比曲线图········································105结论··························

6、··································106附录····························································1115课程设计报告书专用纸1绪论1.1研究背景与研究意义PCM，中文称脉冲编码调制，由A.里弗斯于1973年提出的，这一概念为数字通信奠定了基础，60年代它开始应用于市内电话网以扩充容量，使已有音频电缆的大部分芯片的传输容量扩大24~48倍。到70年代中、末期，各国相继把脉冲编码调制成功地应用于同轴电缆通信、微波接力通信、卫星通信和光纤通信等中、大容量传输系统。80年代初，脉冲编码

7、调制已用于市话中继传输和大容量干线传输以及数字程控交换机，并在用户话机中采用。现在的数字传输系统都是采用脉冲编码调制体制。PCM最初并非传输计算机数据用的，而是使交换机之间有一条中继线不是只传送一条电话信号。PCM有两个标准（表现形式）即E1和T1。中国采用的是欧洲的E1标准。T1的速率是1.544Mbit/s，E1的速率是2.048Mbit/s。脉冲编码调制可以向用户提供多种业务，既可以提供从2M到155M速率的数字数据专线业务，也可以提供话音、图像传送、远程教学等其他业务。特别适用于对数