Time varying higher order spectra

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Time varying higher order spectra

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dc.contributor.author Boashash, Boualem
dc.contributor.author Ristic, B
dc.date.accessioned 2011-05-05T05:24:09Z
dc.date.available 2011-05-05T05:24:09Z
dc.date.issued 1991-11
dc.identifier.citation Conference Record of the Twenty-Fifth Asilomar Conference on Signals, Systems and Computers, 1991, Issue Date : 4-6 Nov 1991, On page(s): 393 en_US
dc.identifier.issn 1058-6393
dc.identifier.uri http://hdl.handle.net/10576/10678
dc.description We can obtain ideal concentration with TFDs whose expectation value is FT of higher-order moments/cumulants. en_US
dc.description.abstract The Wigner-Ville distribution (WVD) is a second-order time-frequency representation in the sense that it is able to give ideal energy concentration for quadratic FM signals, and its expectation value is a second-order time-varying spectrum. The authors present two methods for generalizing the WVD in order to achieve the ideal energy concentration for polynomial frequency (phase) signals. The expected values of such generalized WVDs (GWVDs) are the Fourier transforms of some particular higher-order moments and/or cumulants. The ensemble averaged GWVDs therefore have interpretation as time-varying higher-order spectra. en_US
dc.language.iso en en_US
dc.publisher IEEE en_US
dc.subject Wigner-Ville distribution en_US
dc.subject WVD en_US
dc.subject higher-order cumulants/moments en_US
dc.subject quadratic FM signals en_US
dc.subject polynomial phase signals en_US
dc.subject generalized WVD en_US
dc.title Time varying higher order spectra en_US
dc.type Article en_US

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