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Robust time-varying Wiener filters: theory and time-frequency formulation

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2 Author(s)
Matz, G. ; Inst. of Commun. & Radio-Frequency Eng., Tech. Univ. Wien, Austria ; Hlawatsch, F.

We propose a minimax robust time-varying Wiener filter that is based on a novel uncertainty model for nonstationary random processes. This filter maintains a certain performance for all second-order statistics within prescribed uncertainty classes. Furthermore, it requires less detailed prior knowledge than the ordinary Wiener filter. We also present an intuitively appealing time-frequency formulation of the robust time-varying Wiener filter in which signal subspaces are replaced with time-frequency regions

Published in:

Time-Frequency and Time-Scale Analysis, 1998. Proceedings of the IEEE-SP International Symposium on

Date of Conference:

6-9 Oct 1998