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【MATLAB】MATLAB 仿真 — 模拟调制系统 之 AM 调制过程
2022-07-04 03:55:00 【嵌入式职场】
目录
1、AM 调制过程
clear all;
clc;
%生成基带信号
lower = 0;
upper = 3;
step = (upper-lower)/1e3; %时间采样间隔
t = lower:step:upper;
fm = 1; %基带信号的最高频率
mt = cos(2*pi*fm*t);
%进行 AM 调制-情况 1
A = 1.5;
fc = 10; %载波中心频率
s_AM = (A+mt).*cos(2*pi*fc*t);
figure;
subplot(3,2,1); plot(t,mt,'b-');
hold on; plot(t,A*ones(size(t)),'r-');
xlabel('t (s)'); title边栏推荐
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