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DSP Lab1

The document provides MATLAB code for generating a random signal and calculating its auto-correlation. It includes instructions for plotting both continuous and discrete representations of the random signal, as well as the auto-correlation of a user-defined sequence. The code utilizes various MATLAB functions for visualization and computation.

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Mandala pavan Kalyan
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36 views3 pages

DSP Lab1

The document provides MATLAB code for generating a random signal and calculating its auto-correlation. It includes instructions for plotting both continuous and discrete representations of the random signal, as well as the auto-correlation of a user-defined sequence. The code utilizes various MATLAB functions for visualization and computation.

Uploaded by

Mandala pavan Kalyan
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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1) %generation of random signal

N=input(‘enter the value of n:’);

n = 0:N-1;

x=random(1,N);

figure;

Subplot(2,1,1);

Plot(n,x);

Xlabel(‘ ‘);

Ylabel(‘X’);

title(‘continuous random signal’);

subplot(2,1,2);

stem(n,x);

xlabel(‘n’);

ylabel(‘X’);

title(‘discrete random signal’);

.
3-iv) % Auto correlation

Clc;

Clear all;

Close all;

x=input(‘enter the sequence x(n):’);

n=length(x);

z=flip(x);

m=length(z);

l1=0:n-1;

figure;

subplot(2,1,1);

stem(l1,x);

title(‘input sequence x(n) is :’);

xlabel(‘----> n’);

ylabel(‘---->x(n)’);

grid;

x=[x,zeros(l,m)];

z=[z,zeros(l,n)];

disp(‘auto correlation of x(n) & X(n) is Y(n):’);

y=zeros(l,m+n-1);

for i=1:m+n-1

y(i)=0;

for j=1:m+n-1

if(j<i+1)

y(i)=y(i)+z(j)*x(i-j);

end

end

end

disp(y);

l2= -(n-1):(n-1);

subplot(2,1,2);
stem(l2,y);

title(‘auto correlation of x(n) & X(n) is :’);

xlabel(‘--->n’);

ylabel(‘--->y(n)’);

grid;

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