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The reduced-interference local Wigner-Ville distribution

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2 Author(s)
Oehlmann, H. ; Centre de Recherche en Automatique de Nancy, CNRS, Vandoeuvre, France ; Brie, D.

The local Wigner-Ville distribution (LWVD) extends the Cohen's class time-frequency distributions (TFD) by the definition of a kernel for each time-frequency point (local kernel). The subject of the paper is the determination of these local kernels for interference reduction. Starting from the simple idea of the local limitation of the Wigner-Ville TFD integral bounds, a method is presented to estimate these limits and to obtain a reduced interference TFD. The effectiveness for interference reduction of this LWVD, especially when compared to global-kernel methods, is shown using example signals

Published in:

Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on  (Volume:5 )

Date of Conference:

21-24 Apr 1997

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