MATLAB: DFT

dft

How do i calculate DFT in matlab? I do not want FFT.

Best Answer

Hi Lisa, you had a couple problems with your code:
N= 4; 
x=1:4;
for k=0:3
    for n = 0:3;
y(n+1) = x(n+1).*exp(-(1j*2*pi*k*n)/N);
    end
    xdft(k+1)= sum(y);
end
compare to
fft(x)
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