An Efficient Real-Time Implementation of the Wigner-Ville Distribution

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An Efficient Real-Time Implementation of the Wigner-Ville Distribution

Show simple item record Boashash, Boualem Black, Peter 2011-03-29T11:25:25Z 2011-03-29T11:25:25Z 1987-11
dc.identifier.citation ASSP en_US
dc.identifier.issn 0096-3518
dc.description This is the first article that presented an efficient implementation of the Wigner-Ville Distribution, a key step in implementing Time-Frequency Signal Processing methods. en_US
dc.description.abstract The Wigner-Ville distribution (WVD) is a valuable tool for time-frequency signal analysis. In order to implement the WVD in real time, an efficient algorithm and architecture have been developed which may be implemented with commercial components. This algorithm successively computes the analytic signal corresponding to the input signal, forms a weighted kernel function, and analyzes the kernel via a discrete Fourier transform (DFT). To evaluate the analytic signal required by the algorithm, it is shown that the time domain definition implemented as a finite impulse response (FIR) filter is practical and more efficient than the frequency domain definition of the analytic signal. The windowed resolution of the WVD in the frequency domain is shown to be similar to the resolution of a windowed Fourier transform. A real-time signal processor has been designed for evalution of the WVD analysis system. The system is easily paralleled and can be configured to meet a variety of frequency and time resolutions. The arithmetic unit is based on a pair of high-speed VLSI floating-point multiplier and adder chips. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.relation.ispartofseries VOL. ASSP-35, NO. 11;10.1109/TASSP.1987.1165070
dc.subject Wigner distribution en_US
dc.subject time frequency analysis en_US
dc.subject discrete Fourier transform en_US
dc.subject discrete transforms en_US
dc.subject Wigner-Ville Distribution en_US
dc.subject time frequency signal processing en_US
dc.title An Efficient Real-Time Implementation of the Wigner-Ville Distribution en_US
dc.type Article en_US

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