I want the plot of convolution b/w f1 and f2 in the below program.. f1 and f2 are the Fourier transform of Gate func and Train of impulse

fSampling = 10000;

tSampling = 1/fSampling;

L = 10000;

to = (0:L-1)*tSampling;

F = 100;

t = -5:0.01:5;

w=1;

a= rectpuls(t,2);

subplot(2,4,1);

plot(t,a);

xlabel('Time');

ylabel('Amplitude');

title('Message signal');

grid on;

% Fourier transform of sine wave

subplot(2,4,2)

NFFT = 2^nextpow2(L);

Xsig = fft(a,NFFT)/L;

f1 = fSampling/2*(linspace(0,1,NFFT/2+1));

plot(f1,2*abs(Xsig(1:NFFT/2+1)),'r');

grid on;

axis([-50 500 1.0000e-005 1])

title('\itSignle-Sided Amplitude Sepectrum of Gate Function ');

xlabel('\itFrequency(Hz) \rightarrow');

ylabel('|Xsig(f)| \rightarrow');

% train of impulse

n= -5:1:5;

l =length(n);

for i= 1:l

    x(i)=1;

end;

subplot(2,4,3);

stem(n,x);

xlabel('Time');

ylabel('Amplitude');

title('Train of Impulses');

grid on;

% Fourier Transform of Train of Impulse

subplot(2,4,4);

NFFT = 2^nextpow2(L);

Xsig = fft(x,NFFT)/L;

f2 = fSampling/2*(linspace(0,1,NFFT/2+1));

stem(f2,2*abs(Xsig(1:NFFT/2+1)),'r');

grid on;

axis([-50 500 1.0000e-005 1])

title('\itSignle-Sided Amplitude Sepectrum of Train of impulse ');

xlabel('\itFrequency(Hz) \rightarrow');

ylabel('|Xsig(f)| \rightarrow');

% multiplication of signals

T = -5:0.01:5;

b = a.*x(i);

subplot(2,4,5);

stem(T,b);

xlabel('Time');

ylabel('Amplitude');

title('Sampled signal');

grid on;

% Fourier transform of Sampled Signal

subplot(2,4,6); NFFT = 2^nextpow2(L);

Xsig = fft(x,NFFT)/L;

f3 = fSampling/2*(linspace(0,1,NFFT/2+1));

plot(f3,2*abs(Xsig(1:NFFT/2+1)),'r');

grid on;

axis([-50 500 1.0000e-005 1])

title('\itSignle-Sided Amplitude Sepectrum of Sampled Signal ');

xlabel('\itFrequency(Hz) \rightarrow');

ylabel('|Xsig(f)| \rightarrow');

%Convolution of f1 and f2

c= conv(f1,f2);

subplot(2,4,7);

plot(c);

grid on;

[Thomas Koelen]

Try to format your post, this is unreadable!

[Harshit Tiwari]

just did.... :)

[David Young]

To format it so that it is readable, please remove the blank lines and use the "{} Code" button.