A maximum a posteriori approach to the restoration of randomly distorted signals

TitleA maximum a posteriori approach to the restoration of randomly distorted signals
Publication TypeConference Paper
Year of Publication1988
AuthorsGUAN, L., and R. K. Ward
Conference NameAcoustics, Speech, and Signal Processing, 1988. ICASSP-88., 1988 International Conference on
Pagination1770 -1773 vol.3
Date Publishedapr.
Keywordsfiltering and prediction theory, impulse response, MAP filter, modified Wiener filter, nonlinear optimization problem, optimisation, physical system, randomly distorted signals restoration, signal processing, uncertainty
Abstract

A maximum a posterior (MAP) approach to the restoration of randomly distorted signals is introduced. Since random distortion is due to the uncertainty in the impulse response of the physical system, it cannot be modelled as additive. The theoretical derivation of the MAP filter shows that it is necessary to solve a nonlinear optimization problem. The performance of the method is compared to that of a modified Wiener filter, and a numerical example shows that the MAP filter outperforms the modified Wiener filter

URLhttp://dx.doi.org/10.1109/ICASSP.1988.196962
DOI10.1109/ICASSP.1988.196962

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