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Structures for evaluating the discrete Fourier transform on staggered blocks

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2 Author(s)
P. Corsini ; Università di Pisa, Pisa,Italy ; G. Frosini

In this work three structures are presented for evaluating in real time the discrete Fourier transform (DFT) on successive sections of a sampled signal. Each section consists of N elements and two successive sections are staggered of M \leq N elements. Each structure evaluates N/M DFT coefficients at every step and requires about (N/(2M)) \log _{2} 4M multipliers.

Published in:

IEEE Transactions on Acoustics, Speech, and Signal Processing  (Volume:24 ,  Issue: 2 )