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Single-modulus RNS implementation of Wigner-Ville time-varying spectral estimations

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2 Author(s)
J. Wilbur ; NCSC, Panama City, FL, USA ; F. J. Taylor

A modular arithmetic system, called the single modulus quadratic residue number system (SM-QRNS), is used to implement a fast, high-resolution complex multiply intensive spectral estimator based on the discrete Wigner distribution (DWD). The presented SM-QRNS DWD processor is shown to achieve a high real-time bandwidth. The SM-QRNS is shown to increase throughput over a non-QRNS conventional design by 46 to 97%. The increase in SM-QRNS processing speed was greater when the fast Fourier transform modules were radix-4 rather than radix-2

Published in:

IEEE Transactions on Signal Processing  (Volume:39 ,  Issue: 4 )