[matlab] matlab simulation modulation system SSB system

Catalog

1、SSB System

2、 The program runs

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1、SSB System

close all;
clear all;
clc;
fm = 1; % Frequency of baseband signal 
fc = 10; % Carrier center frequency 
dt = 0.001; % Time sampling interval 
T = 5; % Signal duration 
t = 0:dt:T;
mt = cos(2*pi*fm*t);
%SSB  modulation 
% s_ssb = real(hilbert(mt).*exp(j*2*pi*fc*t) ); % The upper sideband 
s_ssb = real(conj(hilbert(mt)).*exp(j*2*pi*fc*t) ); % Lower sideband 
% %  consider  AWGN  Influence 
% 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