Title :
Polynomial Wigner-Ville distributions and time-varying higher-order spectra
Author :
Boashash, Boualem ; Ristich, Branko
Author_Institution :
Centre for Signal Process. Res., Queensland Univ. of Technol., Brisbane, Qld., Australia
Abstract :
The concept of reduced time-varying higher-order spectra based on polynomial Wigner-Ville distributions (PWVDs) is presented. Two members of a class of PWVDs are illustrated, each dedicated to a specific problem that cannot be optimally solved using Cohen´s class of bilinear (second order) time-frequency distributions. Polynomial WVDs are shown to preserve or generalize many properties of the WVD. The case of multicomponent signals is addressed, and higher-order time-frequency distributions are defined
Keywords :
polynomials; spectral analysis; time-frequency analysis; HOS; higher-order time-frequency distributions; multicomponent signals; polynomial Wigner-Ville distributions; time-varying higher-order spectra; Aging; Australia Council; Capacitive sensors; Fourier transforms; Polynomials; Random processes; Signal analysis; Signal processing; Time frequency analysis;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1992., Proceedings of the IEEE-SP International Symposium
Conference_Location :
Victoria, BC
Print_ISBN :
0-7803-0805-0
DOI :
10.1109/TFTSA.1992.274240
