Communication Systems - ASK

 

clc;clear all;clf;
t=[0:0.02:5*%pi];
fc=10;
A=1;

Vm=squarewave(t,40);

Vc=A/2.*cos(fc.*t);
Va=(1+Vm).*(Vc);

subplot(3,1,1);
plot(t,Vm,'red');
xlabel("Time")
ylabel("Amplitude of Message Signal")

subplot(3,1,2);
plot(t,Vc, 'green');
xlabel("Time")
ylabel("Amplitude of Carrier Signal")

subplot(3,1,3);
plot(t,Va, 'blue');
xlabel("Time")
ylabel("Amplitude of ASK Signal")