Pseudo affine Wigner distributions

Author

Goncalvès, Paulo ; Baraniuk, Richard G.

Author_Institution

Dept. of Electr. & Comput. Eng., Rice Univ., Houston, TX, USA

Volume

3

fYear

1996

fDate

7-10 May 1996

Firstpage

1423

Abstract

We define a new set of tools for time-varying spectral analysis: the pseudo affine Wigner distributions. Based on the affine Wigner distributions of J. and P. Bertrand (1992), these new time-frequency distributions support efficient online operation at the same computational cost as the continuous wavelet transform. Moreover, they take advantage of the proportional bandwidth smoothing inherent in the sliding structure of their implementation to suppress cumbersome interference components. To formalize their place within the echelon of the affine class of time-frequency distributions, we extend the definition of this class and introduce other natural generators

Keywords

Wigner distribution; interference suppression; smoothing methods; spectral analysis; time-frequency analysis; time-varying systems; wavelet transforms; affine class; computational cost; continuous wavelet transform; interference components suppression; natural generators; online operation; proportional bandwidth smoothing; pseudoaffine Wigner distributions; signal analysis; sliding structure; time-frequency distributions; time-varying spectral analysis; Bandwidth; Computational efficiency; Continuous wavelet transforms; Interference; Radar applications; Signal analysis; Smoothing methods; Spectral analysis; Time frequency analysis; Wavelet transforms;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1996. ICASSP-96. Conference Proceedings., 1996 IEEE International Conference on

Conference_Location

Atlanta, GA

ISSN

1520-6149

Print_ISBN

0-7803-3192-3

Type

conf

DOI

10.1109/ICASSP.1996.543928

Filename

543928