基于Matlab的AM调制系统仿真综述.pdf
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2022-07-14
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高频大作业
基于
Matlab
的
AM
调制系统仿真
摘要：调制(modulation )就是对信号源的信息进行处理加到载波上，使其变为适合于信道传输的形式的过
程，就是使载波随信号而改变的技术。基带信号往往不能作为传输信号，因此必须把基带信号转变 为一个相
对基带频率而言频率非常高的信号以适合于信道传输。这个信号叫做已调信号，而基带信 号叫做调制信号。
调制是通过改变高频载波即消息的载体信号的幅度、相位或者频率，使其随着基 带信号幅度的变化而变化来
实现的。 其中正弦载波幅度随调制信号而变化的调制， 简称调幅(AM )。
Abstract
Modulation (modulation) is the source of information for processing to the carrier, make it into a
suitable form of channel transmission process, is the technology of carrier change according to the
signal.Often cannot transmit signal as a base band signal, therefore must convert baseband signal into a
very high frequency relative to the baseband frequency signal suitable for transmission.This signal is called
a modulated signal, and the baseband signal is called modulation signal.High frequency carrier wave is
modulated by changing the carrier of the message signal amplitude, phase, or frequency, to make it as the
change of baseband signal amplitude changes.The sine carrier amplitude varies with the modulation signal
modulation, hereinafter referred to as amplitude modulation (AM).
关键词：调制 标准调制 AM MATLAB 仿真
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