A Gradient-Based Variable Step-Size Scheme for Kurtosis of Estimated Error |
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Authors: | Hwang J-K Li Y-P |
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Affiliation: | Department of Communication Engineering, Yuan-Ze University, Chungli, Taiwan; |
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Abstract: | This paper proposes a new variable step-size LMS (VSLMS) algorithm with an approach in which a gradient-based weighted average of a kurtosis of an estimated error signal is used to improve the drawback of a previous algorithm for application to an unknown channel estimation. The proposed scheme leads not only to the enhancement of the convergence rate, but also to robustness in terms of low-SNR environments. It could also lead to obtaining a lower misadjustment error. |
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