Method for computing fast Fourier transform and inverse fast Fourier transform
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United States of America Patent
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Aug 30, 2005
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Dec 7, 1998
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Dec 8, 1997
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Abstract
A method of calculating the fast Fourier transform or the inverse fast Fourier transform of a series of N real samples x(n), with N power of two, operating according to a time interleaving algorithm and providing the sample series X(n) in ascending order to index n and using limited calculating storage means. A method of calculating the fast Fourier transform or the inverse fast Fourier transform of a series of N conjugated complex samples X(n), with N power of two, operating according to a frequency interleaving algorithm.
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