DocumentCode
1549147
Title
Informative priors for minimum cross-entropy positive time-frequency distributions
Author
Shah, S. Ismail ; Loughlin, Patrick J. ; Chaparro, Luis F. ; El-Jaroudi, Amro
Author_Institution
Dept. of Electr. Eng., Pittsburgh Univ., PA, USA
Volume
4
Issue
6
fYear
1997
fDate
6/1/1997 12:00:00 AM
Firstpage
176
Lastpage
177
Abstract
A method for generating an informative prior when constructing a positive time-frequency distribution (TFD) by the method of the minimum cross-entropy (MCE) is developed. The prior is obtained from a combination of the Wigner distribution (WD) and the evolutionary periodogram, and results in a more informative MCE-TFD, as quantified via the mutual information of the distribution. The procedure allows any of the bilinear distributions to be used in the prior. Examples illustrate the performance of the new technique.
Keywords
Wigner distribution; minimum entropy methods; spectral analysis; time-frequency analysis; Wigner distribution; bilinear distributions; evolutionary periodogram; informative priors; minimum cross-entropy; mutual information; performance; positive time-frequency distributions; spectrograms; Discrete Fourier transforms; Entropy; Frequency; Information resources; Mutual information; Signal processing; Spectrogram;
fLanguage
English
Journal_Title
Signal Processing Letters, IEEE
Publisher
ieee
ISSN
1070-9908
Type
jour
DOI
10.1109/97.586041
Filename
586041
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