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Kernel recursive generalized mixed norm algorithm
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DOI：10.1016/j.jfranklin.2017.04.008.png)
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摘要
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This work studies the problem of kernel adaptive filtering (KAF) for nonlinear signal processing under non-Gaussian noise environments. A new KAF algorithm, called kernel recursive generalized mixed norm (KRGMN), is derived by minimizing the generalized mixed norm (GMN) cost instead of the well-known mean square error (MSE). A single error norm such as l(p) error norm can be used as a cost function in KAF to deal with non-Gaussian noises but it may exhibit slow convergence speed and poor misadjustments in some situations. To improve the convergence performance, the GMN cost is formed as a convex mixture of l(p) and l(q) norms to increase the convergence rate and substantially reduce the steady-state errors. The proposed KRGMN algorithm can solve efficiently the problems such as nonlinear channel equalization and system identification in non-Gaussian noises. Simulation results confirm the desirable performance of the new algorithm. (c) 2017 The Franklin Institute. Published by Elsevier Ltd. All rights reserved.
Keyword:
LEAST-MEAN-SQUARE
P-POWER ALGORITHMS
ADAPTIVE ALGORITHM
CHANNEL ESTIMATION
CORRENTROPY
IDENTIFICATION
CRITERION
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