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Highlights from
MatLab Solutions: "Introduction to Digital Signal Processing: A Computer Laboratory Textbook".

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MatLab Solutions: "Introduction to Digital Signal Processing: A Computer Laboratory Textbook".

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29 Oct 2012 (Updated )

These files are the MatLab solutions of exercises contained in the above DSP lab textbook.

my_FFT_2D(X)
% Two-dimensional DFT computation.
% Input X is an arbitrary real or complex matrix.
% Output matrix y is its 2D DFT transform.
function Y = my_FFT_2D(X)

[rows cols] = size(X);
X1 = zeros(rows,cols);
Y   = zeros(rows,cols);

% Compute the FFT row-wise:
for i=1:rows
    X1(i,:) = fft(X(i,:));
end

% Because of the 2D-FFT separability, now
% compute the FFT column-wise on matrix X1:
for j=1:cols
    Y(:,j) = fft(X1(:,j));
end

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