脉冲编码调制通信系统仿真设计(MATLAB)(附程序)
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密 惠 保
脉冲编码调制通信系统仿真设计(MATLAB)(附程序)(课题说明书,开题报告,中期检查表,论文9200字)
摘 要 本文阐述了脉冲编码调制技术的理论基础和实现方法， 运用MATLAB仿真抽样信号的频谱，分析满足不同条件下的抽样情况，验证奈奎斯特抽样定理；不同量化电平情况下的信噪比的计算，对PCM调制系统中的非均匀量化的压扩技术和编码进行仿真与计算。利用MATLAB 提供的可视化工具建立了脉冲编码调制仿真模型， 详细讲述了各模块的设计， 并指出了仿真建模中要注意的问题。在给定仿真条件下， 运行了仿真程序， 得到了预期的仿真结果。通过MATLAB语言对PCM调制系统的采样，量化，编码的仿真与计算，使得分析PCM调制系统变得简单，MATLAB语言在通信仿真中的应用将越来越广泛。
关键词 采样定理； 非均匀量化； MATLAB； 仿真
Simulation Design of Pulse Coded Modulation Communication System
Abstract This paper describes the theoretical basis and implementation method of pulse coded modulation technology.The spectrum of sampled signal is simulated by MATLAB. Sampling conditions satisfying different conditions are analyzed and Nyquist sampling theorem is verified. The non-uniform quantization compression technology and coding in PCM modulation system are simulated and calculated by calculating signal-to-noise ratio at different quantization levels. The simulation model of pulse coded modulation is established by using the visualization tool provided by MATLAB. The design of each module is described in detail, and the problems needing attention in simulation modeling are pointed out. Under the given simulation conditions, the simulation program is run and the expected simulation results are obtained. Through the simulation and calculation of sampling, quantization and coding of PCM modulation system with MATLAB language, the analysis of PCM modulation system becomes simple. The application of MATLAB language in communication simulation will be more and more extensive. [资料来源：http://think58.com]
Key words Sampling theorem； Nonuniform quantization； MATLAB； simulation
目 录
摘要及关键词 1
1 前言 1
2 PCM编码系统介绍 1
2.1信号源子系统的组成 1
2.2 PCM编码器模块 5
3运用MATLAB仿真分析PCM调制系统 6
3.1均匀量化的仿真 6 [来源：http://think58.com]
3.2非均匀量化的仿真 8
4系统仿真 10
4.1 总体设计思想 10
4.2 仿真波形 11
5设计过程中需要解决的问题 17
结论 17
参考文献 18
英文摘要及关键词 18
致 谢 19
附 录 20 [来源：http://think58.com]