数字信号的频带传输系统的仿真分析.doc

西北工业大学明德学院本科毕业设计论文摘要本文首先介绍了通讯的历史和发展，随后介绍了数字信号的二进制和多进制对载波的幅度、频率或相位进行调制，并以幅度键控（ASK）为例利用MATLAB集成环境下的Simulink仿真平台对调制解调的原理、过程以及特点进行深入了解以及各种模拟调制方式性能的比较。对于不同的调制解调方式，让它们处于高斯白噪声或者随机环境下，对它们的信噪比、增益、误码率等进行对比分析，总结归纳出各自的优缺点以及应用。关键字：二进制，多进制，MATLAB，Simulink，高斯白噪声ABSTRACTInthispaper,wefirstintroducethehistoryanddevelopmentofcommunication,thenintroducesthedigitalsignalofbinaryandM-arythecarrieramplitude,frequency,orphasemodulation,andamplitudeshiftcontrol(ask)forexampletousetheintegratedenvironmentofMATLABSimulinksimulationplatformofmodulationanddemodulationprinciple,processandcharacteristicsofthedeepunderstandingandvariousmodulationperformancesimulation.Fordifferentmodulationanddemodulation,letthemunderGaussianwhitenoiseorrandomenvironment,theirsignaltonoiseratio,gainandbiterrorrate(BER)arecomparedandanalyzed,summeduptheirrespectiveadvantagesanddisadvantagesaswellasapplication.Keywords:binary,multiband,MATLAB,Simulink,Gausswhitenoise目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc420315589"摘要PAGEREF_Toc420315589\h1HYPERLINK\l"_Toc420315590"AbstractPAGEREF_Toc420315590\h2HYPERLINK\l"_Toc420315591"前言PAGEREF_Toc420315591\h3HYPERLINK\l"_Toc420315592"目录PAGEREF_Toc420315592\h4HYPERLINK\l"_Toc420315593"第1章通信技术的历史和发展PAGEREF_Toc420315593\h5HYPERLINK\l"_Toc420315594"1.1通信的概念PAGEREF_Toc420315594\h5HYPERLINK\l"_Toc420315595"1.2通信的发展史简介PAGEREF_Toc420315595\h6HYPERLINK\l"_Toc420315596"1.3通信技术的发展现状和趋势PAGEREF_Toc420315596\h7HYPERLINK\l"_Toc420315597"第2章数字信号频带传输系统的基本原理PAGEREF_Toc420315597\h8HYPERLINK\l"_Toc420315598"2.1数字信号的二进制调制PAGEREF_Toc420315598\h8HYPERLINK\l"_Toc420315599"2.1.1幅度键控（2ASK）PAGEREF_Toc420315599\h8HYPERLINK\l"_Toc420315600"2.1.2频移键控（2FSK）PAGEREF_Toc420315600\h10HYPERLINK\l"_Toc420315601"2.1.3相移键控（2PSK）PAGEREF_Toc420315601\h13HYPERLINK\l"_Toc420315602"2.2数字信号的多进制调制PAGEREF_Toc420315602\h14HYPERLINK\l"_Toc420315603"2.2.1MASK的调制PAGEREF_Toc420315603\h14HYPERLINK\l"_Toc420315604"2.2.2MFSK的调制PAGEREF_Toc4203156