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Altera_Forum
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8 years ago

FFT / IFFT Example Inconsistency

Hi! I was looking at using the 2D FFT / IFFT examples in an application however I was coming across incorrect values for the IFFT result. I'm using MATLAB to compare results and for verificatio...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
8 years ago

You haven't described how you implemented 2D fft/ifft and are you looking at sim results. Is it just a black box 2D fft followed by 2D ifft ip.

for 2D fft it equals fft on columns followed by fft of rows of resulting output. For ifft you do ifft of resulting rows then ifft of resulting columns.

Additionally it could be scaling issue.