A Variable Step-Size Leaky LMS Algorithm

The leaky LMS algorithm has been extensively studied because of its control of parameter drift. This unexpected parameter drift is linked to the inadequacy of excitation in the input sequence. And generally leaky LMS algorithms use fixed step size to force the performance of compromise between the f...

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Autores principales:	Sihai Zhao, Jiangye Xu, Yuyan Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Hindawi-Wiley 2021
Materias:	Technology T Telecommunication TK5101-6720
Acceso en línea:	https://doaj.org/article/34f23caa25f34875829c8da3ba2f5530
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id	oai:doaj.org-article:34f23caa25f34875829c8da3ba2f5530
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spelling	oai:doaj.org-article:34f23caa25f34875829c8da3ba2f55302021-11-22T01:09:55ZA Variable Step-Size Leaky LMS Algorithm1530-867710.1155/2021/7951643https://doaj.org/article/34f23caa25f34875829c8da3ba2f55302021-01-01T00:00:00Zhttp://dx.doi.org/10.1155/2021/7951643https://doaj.org/toc/1530-8677The leaky LMS algorithm has been extensively studied because of its control of parameter drift. This unexpected parameter drift is linked to the inadequacy of excitation in the input sequence. And generally leaky LMS algorithms use fixed step size to force the performance of compromise between the fast convergence rate and small steady-state misalignment. In this paper, variable step-size (VSS) leaky LMS algorithm is proposed. And the variable step-size method combines the time average estimation of the error and the time average estimation of the normalized quantity. Variable step-size method proposed incorporating with leaky LMS algorithm can effectively eliminate noise interference and make the early convergence, and final small misalignments are obtained together. Simulation results demonstrate that the proposed algorithm has better performance than the existing variable step-size algorithms in the unexcited environment. Furthermore, the proposed algorithm is comparable in performance to other variable step-size algorithms under the adequacy of excitation.Sihai ZhaoJiangye XuYuyan ZhangHindawi-WileyarticleTechnologyTTelecommunicationTK5101-6720ENWireless Communications and Mobile Computing, Vol 2021 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology T Telecommunication TK5101-6720
spellingShingle	Technology T Telecommunication TK5101-6720 Sihai Zhao Jiangye Xu Yuyan Zhang A Variable Step-Size Leaky LMS Algorithm
description	The leaky LMS algorithm has been extensively studied because of its control of parameter drift. This unexpected parameter drift is linked to the inadequacy of excitation in the input sequence. And generally leaky LMS algorithms use fixed step size to force the performance of compromise between the fast convergence rate and small steady-state misalignment. In this paper, variable step-size (VSS) leaky LMS algorithm is proposed. And the variable step-size method combines the time average estimation of the error and the time average estimation of the normalized quantity. Variable step-size method proposed incorporating with leaky LMS algorithm can effectively eliminate noise interference and make the early convergence, and final small misalignments are obtained together. Simulation results demonstrate that the proposed algorithm has better performance than the existing variable step-size algorithms in the unexcited environment. Furthermore, the proposed algorithm is comparable in performance to other variable step-size algorithms under the adequacy of excitation.
format	article
author	Sihai Zhao Jiangye Xu Yuyan Zhang
author_facet	Sihai Zhao Jiangye Xu Yuyan Zhang
author_sort	Sihai Zhao
title	A Variable Step-Size Leaky LMS Algorithm
title_short	A Variable Step-Size Leaky LMS Algorithm
title_full	A Variable Step-Size Leaky LMS Algorithm
title_fullStr	A Variable Step-Size Leaky LMS Algorithm
title_full_unstemmed	A Variable Step-Size Leaky LMS Algorithm
title_sort	variable step-size leaky lms algorithm
publisher	Hindawi-Wiley
publishDate	2021
url	https://doaj.org/article/34f23caa25f34875829c8da3ba2f5530
work_keys_str_mv	AT sihaizhao avariablestepsizeleakylmsalgorithm AT jiangyexu avariablestepsizeleakylmsalgorithm AT yuyanzhang avariablestepsizeleakylmsalgorithm AT sihaizhao variablestepsizeleakylmsalgorithm AT jiangyexu variablestepsizeleakylmsalgorithm AT yuyanzhang variablestepsizeleakylmsalgorithm
_version_	1718418391466770432

A Variable Step-Size Leaky LMS Algorithm

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