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【MATLAB】MATLAB 仿真模拟调制系统 — SSB 系统
2022-07-04 03:55:00 【嵌入式职场】
目录
1、SSB 系统
close all;
clear all;
clc;
fm = 1; %基带信号的频率
fc = 10; %载波中心频率
dt = 0.001; %时间采样间隔
T = 5; %信号时长
t = 0:dt:T;
mt = cos(2*pi*fm*t);
%SSB 调制
% s_ssb = real(hilbert(mt).*exp(j*2*pi*fc*t) ); %上边带
s_ssb = real(conj(hilbert(mt)).*exp(j*2*pi*fc*t) ); %下边带
% % 考虑 AWGN 的影响
% B = fm; N0 = 0.01;
% noise = noise_nb(fc,B,N0,t);
% s_ssb = s_ssb + noise;
figure;
subplot(3,1,1); plot(t,s_ssb,'b-');
hold on; plot(t,mt,'r:');
xlabel('t (s)'); grid on;
title('S边栏推荐
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