Write a MATLAB code to compute and plot the DTFS coefficient

Write a MATLAB code to compute and plot the DTFS coefficients of

Solution

%let find the signal fo 64 sequence
N=64;
n=0:1:N-1;
x=1-cos(3*pi*n/8);
for k=0:1:N-1
for i=1:1:N
a(k+1)=(1/N)*x(i)*exp(-1i*2*pi*k*(i-1)/N);
end
end
stem(n,abs(a));
xlabel(\'k\');
title(\'Magnitude of DTFS coeffiecient\');