Matlab Program to Perform Frequency Shifting

Matlab Program to Perform Frequency Shifting:

                     

clc

clear

disp('x(n) seq');

x=[1 2 1 2];

disp(x);

z=fft(x);

disp('fft of x(n)');

disp(z);

N=4;

n=0:1:N-1;

p=exp(j*2*pi*n/N);

x2(n+1)=p;

t=x.*x2;

disp('x(n)-x2=');

disp(t);

s=fft(t);

disp('fft of x(n)=');

disp(s);

y=circshift(z,[0 1]);

disp('Freq Shift x(n) seq');

disp(y);

Output: