Title :
Single-modulus RNS implementation of Wigner-Ville time-varying spectral estimations
Author :
Wilbur, JoEllen ; Taylor, Fred J.
Author_Institution :
NCSC, Panama City, FL, USA
fDate :
4/1/1991 12:00:00 AM
Abstract :
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
Keywords :
computerised signal processing; digital arithmetic; spectral analysis; RNS; Wigner-Ville estimations; discrete Wigner distribution; fast Fourier transform modules; processing speed; processor; radix-2 modules; radix-4 modules; real-time bandwidth; single modulus RNS; single modulus quadratic residue number system; spectral estimator; throughput; Colored noise; Equations; Filtering; Notice of Violation; Parameter estimation; Power harmonic filters; Signal processing; Speech processing; Taylor series; Time frequency analysis;
Journal_Title :
Signal Processing, IEEE Transactions on
