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Altera_Forum
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16 years ago

Ofmd modulator: IFFT

Hi All. I am realizing an Ofmd modulator. I have a problem with zero padding of the IFFT. :confused: I decide to use the FFT MegaCore Function v9.0. I have 1536 samples and I choose...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

To keep the shape of the spectrum, u should pad ONE zero to the front to keep DC centred, and 2048-1536-1 zeros to the center of the 1536 samples.

Scale factor should be considered.