Variable step-size sign natural gradient algorithm for sequential blind source separation

A novel variable step-size sign natural gradient algorithm (VS-S-NGA) for online blind separation of independent sources is presented. A sign operator for the adaptation of the separation model is obtained from the derivation of a generalized dynamic separation model. A variable step size is also de...

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Main Authors:	Lianxi Yuan, Wenwu Wang, Jonathon Chambers
Format:	Default Article
Published:	2005
Subjects:	Mechanical engineering not elsewhere classified Adaptive step size Natural gradient Sequential blind source separation (BSS) Sign algorithm Mechanical Engineering not elsewhere classified
Online Access:	https://hdl.handle.net/2134/5771
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id	rr-article-9565538
record_format	Figshare
spelling	rr-article-95655382005-01-01T00:00:00Z Variable step-size sign natural gradient algorithm for sequential blind source separation Lianxi Yuan (7212854) Wenwu Wang (4352767) Jonathon Chambers (1251609) Mechanical engineering not elsewhere classified Adaptive step size Natural gradient Sequential blind source separation (BSS) Sign algorithm Mechanical Engineering not elsewhere classified A novel variable step-size sign natural gradient algorithm (VS-S-NGA) for online blind separation of independent sources is presented. A sign operator for the adaptation of the separation model is obtained from the derivation of a generalized dynamic separation model. A variable step size is also derived to better match the dynamics of the input signals and unmixing matrix. The proposed sign algorithm is appealing in practice due to its computational simplicity. Experimental results verify the superior convergence performance over conventional NGA in both stationary and nonstationary environments. 2005-01-01T00:00:00Z Text Journal contribution 2134/5771 https://figshare.com/articles/journal_contribution/Variable_step-size_sign_natural_gradient_algorithm_for_sequential_blind_source_separation/9565538 CC BY-NC-ND 4.0
institution	Loughborough University
collection	Figshare
topic	Mechanical engineering not elsewhere classified Adaptive step size Natural gradient Sequential blind source separation (BSS) Sign algorithm Mechanical Engineering not elsewhere classified
spellingShingle	Mechanical engineering not elsewhere classified Adaptive step size Natural gradient Sequential blind source separation (BSS) Sign algorithm Mechanical Engineering not elsewhere classified Lianxi Yuan Wenwu Wang Jonathon Chambers Variable step-size sign natural gradient algorithm for sequential blind source separation
description	A novel variable step-size sign natural gradient algorithm (VS-S-NGA) for online blind separation of independent sources is presented. A sign operator for the adaptation of the separation model is obtained from the derivation of a generalized dynamic separation model. A variable step size is also derived to better match the dynamics of the input signals and unmixing matrix. The proposed sign algorithm is appealing in practice due to its computational simplicity. Experimental results verify the superior convergence performance over conventional NGA in both stationary and nonstationary environments.
format	Default Article
author	Lianxi Yuan Wenwu Wang Jonathon Chambers
author_facet	Lianxi Yuan Wenwu Wang Jonathon Chambers
author_sort	Lianxi Yuan (7212854)
title	Variable step-size sign natural gradient algorithm for sequential blind source separation
title_short	Variable step-size sign natural gradient algorithm for sequential blind source separation
title_full	Variable step-size sign natural gradient algorithm for sequential blind source separation
title_fullStr	Variable step-size sign natural gradient algorithm for sequential blind source separation
title_full_unstemmed	Variable step-size sign natural gradient algorithm for sequential blind source separation
title_sort	variable step-size sign natural gradient algorithm for sequential blind source separation
publishDate	2005
url	https://hdl.handle.net/2134/5771
_version_	1797471048400109568

Variable step-size sign natural gradient algorithm for sequential blind source separation

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