基于matlab的am信号的调制与解调本科学位论文.doc

计算机类课程设计计算机类课程设计基于MATLAB的AM信号的调制与解调[摘要]：本文主要的研究内容是了解AM信号的数学模型及调制方式以及其解调的方法。不同的解调方法在不同的信噪比情况下的解调结果，那种方法更好，作出比较。进行AM信号的调制与解调。先从AM的调制研究，研究它的功能及在现实生活中的运用。其次研究AM的解调，以及一些有关的知识点，以及通过它在通信方面的运用更加深入的了解它。从AM信号的数学模型及调制解调方式出发，得出AM调制与解调的框图和调制解调波形。利用MATLAB编程语言实现对AM信号的调制与解调，给出不同信噪比情况下的解调结果对比。[关键词]：AM信号;调制;解调;信噪比MATLAB.ModulationanddemodulationofAMsignalbasedonMATLAB[Abstract]:ThemaincontentofthispaperistounderstandthemathematicalmodeloftheAMsignalandthemodulationandthedemodulationmethod.Demodulationdifferentmethodsindifferentcircumstancesofthedemodulationsignaltonoiseratiotheresultsofmethodsthatbetter,tomakethecomparison.RequirementismorethandoublethesoundandtheAMsignalmodulationanddemodulation.AMmodulationfirststudyofitsfunctionandinreallifeuse.AMdemodulationfollowedbyresearch,aswellassomerelatedknowledge,aswellasthroughitsuseofcommunicationsmorein-depthunderstandingofit.AMsignalfromthetoneofthemathematicalmodelandthemodulationanddemodulationmethods,thetwo-toneAMsignaltodrawamathematicalmodelandtheblockdiagramofmodulationanddemodulationandmodulationanddemodulationwaveforms.MATLABprogramminglanguagetousetoachievethetwo-toneAMsignalmodulationanddemodulation,giventhedifferentcircumstancesofthedemodulationsignaltonoiseratiocomparedtheresults.[Keywords]:AMsignal,Modulation,Demodulation,Noiseratiosignal,MATLAB目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc436061765"1.绪论PAGEREF_Toc436061765\h1HYPERLINK\l"_Toc436061766"1.1背景以及意义PAGEREF_Toc436061766\h1HYPERLINK\l"_Toc436061767"1.2发展前景PAGEREF_Toc436061767\h1HYPERLINK\l"_Toc436061768"2.AM信号调制原理以及特点PAGEREF_Toc436061768\h3HYPERLINK\l"_Toc436061769"2.1噪声模型PAGEREF_Toc436061769\h3HYPERLINK\l"_Toc436061770"2.1.1噪声的分类PAGEREF_Toc436061770\h3HYPERLINK\l"_Toc436061771"2.1.2本文噪声模型PAGEREF_Toc436061771\h3HYPERLINK\l"_Toc436061772"2.2通用调制模型PAGEREF_Toc436061772\h4HYPERLINK\l"_Toc436061773"2.3AM信号的调制原理PAGEREF_Toc436061773\h4HYPERLINK\l"_Toc436061774"2.3.1AM信号数字模型以及特点PAGEREF_Toc436061774\h4HYPERLINK\l"_Toc436