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To develop a program for computing circular convolution Using MATLAB

# %circular convolution program:

clc;

clear all;

close all;

disp('circular convolution program');

x=input('enter i/p sequence x(n):');

a=length(x);

disp(a);

h=input('enter i/p sequence h(n):');

b=length(h);

disp(b);

subplot(2,2,1), stem(x);

title('i/p sequence x(n)is:');

xlabel('---->n');

ylabel('---->x(n)');grid;

subplot(2,2,2), stem(h);

title('i/p sequence h(n)is:');

xlabel('---->n');

ylabel('---->h(n)');grid minor;

disp('circular convolution of x(n) & h(n) is y(n):');

if(a>b)

n=a;

else

n=b;

end

if(a-b~=0)

if(a>b)

h=[h,zeros(1,a-b)];

else

x=[x,zeros(1,b-a)];

end

end

disp(x);

disp(h);

y=zeros(1,n);

for i=1:n

y(i)=0;

k=i;

for j=1:n

y(i)=y(i)+(x(j)*h(k));

if k==1

k=n+1;

end

k=k-1;

end

end

subplot(2,2,[3,4]),stem(y);

title('circular convolution of x(n) & h(n) is:');

xlabel('---->n');

ylabel('---->y(n)');grid;

disp(y);

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