MATLAB CODE- Generation of DSBSC Signal

                                                               DSBSC SIGNAL

Aim:To obtain a MATLAB program for generation of DSBSC signal.

Apparatus:PC loaded with MATLAB software.

Program:

close all;

clear all;

tmin=0;

tmax=10^-3;

step=(tmax-tmin)/1000;

t=tmin:step:tmax;

Am=1;

fm=2*10^3;

m=Am*sin(2*pi*fm*t);

figure(1);

subplot(3,1,1);

plot(t,m);

xlabel('time');

ylabel('amplitude')';

title('message signal');

grid on;

tmin=0;

tmax=10^-3;

step=(tmax-tmin)/1000;

t=tmin:step:tmax;

Ac=1;

fc=10^4;

c=Ac*sin(2*pi*fc*t);

subplot(3,1,2);

plot(t,c);

xlabel('time');

ylabel('amplitude');

title('carrier signal');

grid on;

s=m.*c;

%figure(2);

subplot(3,1,3);

plot(t,s);

xlabel('time');

ylabel('amplitude');

title('DSB-SC signal');

grid on;

hold on;

plot(t,Ac*Am*m,'r');

hold on;

plot(t,-Ac*Am*m,'r');

hold off;

Output Waveforms:

Result: The MATLAB program for generation of DSBSC signal is written and the graphs are also obtained.