MATLAB CODE TO UP-SAMPLE THE INPUT SIGNAL.

CODE:

N=input('Enter the length of input');

L=input('Up-sampling factor');

f=input('enter the input signal frequency');

n=0:N-1;

x=sin(2*pi*f*n);

y=zeros(1,L*length(x));

y([1:L:length(y)])=x;

 

subplot(2,1,1);

stem(n,x);

xlabel('time index n');

ylabel('amplitude');

subplot(2,1,2);

stem(n,y(1:length(x)));

title('output sequence');

xlabel('time index n');

ylabel('amplitude');

OUTPUT:

Enter the length of input 50

Up-sampling factor 3

enter the input signal frequency 0.12