Amplitude Shift Keying - Matlab Program:
clc
clear all;
close all;
N=10;
x=randint(1,N);
k=1;
for t=0.01:0.01:10
c(k)=sin(2*pi*t);
k=k+1;
end
for j=1:1:N
if x(j)==0
for i=(j-1)*100+1:1:j*100
y(i)=0;
tr(i)=0;
end
end
if x(j)==1
for i=(j-1)*100+1:1:j*100
y(i)=1;
tr(i)=c(i);
end
end
end
for i=1:1:1000
re(i)=tr(i)*c(i);
end
for j=1:1:N
d=0;
for i=(j-1)*100+1:1:j*100
d=d+re(i)
end
if d>0.5
det(j)=1;
else
det(j)=0;
end
end
for j=1:1:N
if det(j)==0
for i=(j-1)*100+1:1:j*100
det(i)=0;
end
end
if x(j)==1
for i=(j-1)*100+1:1:j*100
det(i)=1;
end
end
end
subplot(5,1,1);
plot(y);
title('message Signal');
subplot(5,1,2);
plot(c);
title('Carrier Signal');
subplot(5,1,3);
plot(tr);
title('Transmitted Signal');
subplot(5,1,4);
plot(re);
title('Received Signal');
subplot(5,1,5);
plot(det);
title('Detected Signal');
Amplitude Shift Keying Generation:
clc
clear all;
close all;
N=10;%No.of Data
x=randint(1,N);
%Carrier Generation
k=1;
for t=0:0.01:10
c(k)=2*sin(2*pi*t);
k=k+1;
end
for j=1:1:N
if x(j)==1
for i=(((j-1)*100)+1):1:(j*100)
y(i)=1;
R(i)=y(i)*c(i);
end
else
for i=(((j-1)*100)+1):1:(j*100)
y(i)=0;
R(i)=y(i)*c(i);
end
end
end
for i=1:1:1000
re(i)=R(i)*c(i);
end
for j=1:N
d=0;
for i=(((j-1)*100)+1):1:(j*100)
d=d+re(i)
end
if d>=0.5
r(j)=1;
else
r(j)=0;
end
end
x%Transmitted Data Sequence
r%Detected Data Sequence
figure(1);
subplot(3,1,1);
plot(y);
title('Binary Input');
xlabel('Time in ms');
ylabel('Amplitude');
subplot(3,1,2);
plot(c);
title('Carrier Signal');
xlabel('Time in ms');
ylabel('Amplitude');
subplot(3,1,3);
plot(R);
title('Amplitude Shift Keying');
xlabel('Time in ms');
ylabel('Amplitude');
clc
clear all;
close all;
N=10;
x=randint(1,N);
k=1;
for t=0.01:0.01:10
c(k)=sin(2*pi*t);
k=k+1;
end
for j=1:1:N
if x(j)==0
for i=(j-1)*100+1:1:j*100
y(i)=0;
tr(i)=0;
end
end
if x(j)==1
for i=(j-1)*100+1:1:j*100
y(i)=1;
tr(i)=c(i);
end
end
end
for i=1:1:1000
re(i)=tr(i)*c(i);
end
for j=1:1:N
d=0;
for i=(j-1)*100+1:1:j*100
d=d+re(i)
end
if d>0.5
det(j)=1;
else
det(j)=0;
end
end
for j=1:1:N
if det(j)==0
for i=(j-1)*100+1:1:j*100
det(i)=0;
end
end
if x(j)==1
for i=(j-1)*100+1:1:j*100
det(i)=1;
end
end
end
subplot(5,1,1);
plot(y);
title('message Signal');
subplot(5,1,2);
plot(c);
title('Carrier Signal');
subplot(5,1,3);
plot(tr);
title('Transmitted Signal');
subplot(5,1,4);
plot(re);
title('Received Signal');
subplot(5,1,5);
plot(det);
title('Detected Signal');
Amplitude Shift Keying Generation:
clc
clear all;
close all;
N=10;%No.of Data
x=randint(1,N);
%Carrier Generation
k=1;
for t=0:0.01:10
c(k)=2*sin(2*pi*t);
k=k+1;
end
for j=1:1:N
if x(j)==1
for i=(((j-1)*100)+1):1:(j*100)
y(i)=1;
R(i)=y(i)*c(i);
end
else
for i=(((j-1)*100)+1):1:(j*100)
y(i)=0;
R(i)=y(i)*c(i);
end
end
end
for i=1:1:1000
re(i)=R(i)*c(i);
end
for j=1:N
d=0;
for i=(((j-1)*100)+1):1:(j*100)
d=d+re(i)
end
if d>=0.5
r(j)=1;
else
r(j)=0;
end
end
x%Transmitted Data Sequence
r%Detected Data Sequence
figure(1);
subplot(3,1,1);
plot(y);
title('Binary Input');
xlabel('Time in ms');
ylabel('Amplitude');
subplot(3,1,2);
plot(c);
title('Carrier Signal');
xlabel('Time in ms');
ylabel('Amplitude');
subplot(3,1,3);
plot(R);
title('Amplitude Shift Keying');
xlabel('Time in ms');
ylabel('Amplitude');
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