On the MAP estimation in the context of elliptical distributions

Abstract : The purpose of this paper is to study the estimation problem of a multivariate elliptically symmetric random variable corrupted by a multivariate elliptically symmetric noise. In this study, the maximum a posteriori (MAP) approach is presented, extending recent works by Alecu et al. and Selesnick: (i) the estimation is performed in a multivariate context, (ii) the corrupting noise is not limited to be Gaussian. This paper also extends our previous work that dealt with the minimum mean square error (MMSE) approach. The MMSE is briefly recalled and the MAP is derived. Then the practical use of the MAP in a general setting is discussed and compared to that of the MMSE and of the Wiener estimator. Several examples illustrate the behaviors of these estimators and exhibit their performances.
Type de document :
Communication dans un congrès
17th European Signal Processing Conference (EUSIPCO-2009), Aug 2009, Glasgow, United Kingdom. EURASIP, pp.2460-2464, 2009, Glasgow, Scotland, UK, 24-28 August 2009


https://hal.archives-ouvertes.fr/hal-00436588
Contributeur : Steeve Zozor <>
Soumis le : vendredi 27 novembre 2009 - 10:23:30
Dernière modification le : mercredi 17 juin 2015 - 01:26:00

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  • HAL Id : hal-00436588, version 1

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Steeve Zozor, Christophe Vignat. On the MAP estimation in the context of elliptical distributions. 17th European Signal Processing Conference (EUSIPCO-2009), Aug 2009, Glasgow, United Kingdom. EURASIP, pp.2460-2464, 2009, Glasgow, Scotland, UK, 24-28 August 2009. <hal-00436588>

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