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Prime-factor FFT algorithm

The prime-factor algorithm (PFA), also called the Good–Thomas algorithm (1958/1963), is a fast Fourier transform (FFT) algorithm that re-expresses the discrete Fourier transform (DFT) of a size N = N1N2 as a two-dimensional N1 × N2 DFT, but only for the case where N1 and N2 are relatively prime. These smaller transforms of size N1 and N2 can then be…

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Prime-factor FFT algorithm

Nodes23
Edges22
Triples0
Avg. degree1.91
Density0.086957
Components1

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displaystyle pfa algorithm dft also omega fft textstyle prod text n1 n2 relatively prime bigotimes group mathbb additive size smaller

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