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Number representations for prime length DFTs

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1 Author(s)
J. S. Ward ; Royal Signals & Radar Establishment, Great Malvern, UK

It is proposed to use (1, Wp), with Wp the pth root of unity and p prime, as a basis for the complex plane, rather than the usual (1, i), for evaluating a p-point DFT. This representation is shown to reduce the number of multiplications required compared to a scheme proposed by Curtis.

Published in:

Electronics Letters  (Volume:20 ,  Issue: 7 )