基于Matlab的数字基带传输系统的仿真11.doc

最新精品文档，知识共享！ 最新精品文档，知识共享！ 课程设计(论文)说明书 题 目：基于Matlab的数字基带通信系统仿真 院 （系）： 信息与通信学院 专 业： 通信工程 学生姓名： 黄志忠 学 号： 1000210217 指导教师： 闫 坤 职 称： 讲 师 2013年 12 月 最新精品文档，知识共享！ 摘 要 本论文主要研究了数字信号的基带传输的基本概念及数字信号基带传输的传输过程和如何用MATLAB软件仿真设计数字基带传输系统。本文首先介绍了MATLAB仿真软件。然后介绍了本课题的理论依据，包括数字通信，数字基带传输系统的组成及数字基带信号的传输过程。接着介绍了数字基带传输系统的特性包括数字PAM信号功率普密度及常用线路码型，并通过比较最终选择双极性不归零码。之后介绍了数字基带信号的最佳接收的条件以及如何通过示波器观察基带信号的波形。最后按照仿真过程基本步骤用MATLAB的仿真工具实现了数字基带传输系统的仿真过程，对系统进行了分析。 关键字：数字基带传输系统 MATLAB 计算机仿真； Abstract This paper mainly studies the baseband transmission of digital signal and the basic concept of baseband transmission of digital signal in the transmission process and how to use MATLAB software to design and Simulation of digital baseband transmission system. This paper first introduces MATLAB simulation software. Then introduces the theoretical basis, including digital communication, digital baseband transmission system and digital baseband signal transmission process. Then it introduces the characteristics of digital baseband transmission system includes the digital PAM signal power spectrum density and commonly used line code, and through the comparison of the final choice of bipolar nrz. After introducing the digital baseband signal received by the best conditions and how the baseband signal waveform oscilloscope observation. Finally, in accordance with the basic steps of simulation process using MATLAB simulation tool to achieve the digital baseband transmission system simulation process, has carried on the system analysis. Key words：Digital Base Band Transmission System Computer simulation 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc374300826 引 言 PAGEREF _Toc374300826 \h 1 HYPERLINK \l _Toc374300827 1 MATLAB软件简介 PAGEREF _Toc374300827 \h 2 HYPERLINK \l _Toc374300828 1.1 MATLAB的基本知识 PAGEREF _Toc374300828 \h 2 HYPERLINK \l _Toc374300829 1.2 Matlab 语言的特点 PAGEREF