Improved adaptive filtering schemes via adaptive combination

Combination schemes are gaining attention as an interesting way to improve adaptive filter performance. In this paper, we present some recently proposed practical schemes for convex and affine filter combination, explaining how they can be useful to overcome some of the most important limitations of...

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Bibliographic Details
Main Authors: Arenas-Garcia, Jeronimo, Azpicueta-Ruiz, Luis A, Figueiras-Vidal, Anibal R
Format: Conference Proceeding
Language:English
Subjects:
Acoustic signal processing
Adaptive filters
affine combination
biased estimation
Convergence
convex combination
echo cancellation
Echo cancellers
Information filtering
Information filters
Mean square error methods
Signal processing algorithms
Steady-state
Transversal filters
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Summary:Combination schemes are gaining attention as an interesting way to improve adaptive filter performance. In this paper, we present some recently proposed practical schemes for convex and affine filter combination, explaining how they can be useful to overcome some of the most important limitations of conventional adaptive filters. We will also illustrate the benefits of this approach with several experiments. First, we explain how the combination can reduce the mean square error (MSE) of adaptive filters by biasing their outputs. We present also some recent results in real scenarios for acoustic echo cancellation.
ISSN:1058-6393
2576-2303
DOI:10.1109/ACSSC.2009.5470137