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Conference Paper: Stochastic feedback control for spatial interference avoidance

TitleStochastic feedback control for spatial interference avoidance
Authors
Issue Date2010
Citation
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2010, p. 937-941 How to Cite?
AbstractSpatial interference avoidance is a simple and effective way of mitigating interference in multi-antenna wireless networks. The deployment of this technique requires channel-state-information (CSI) feedback from each receiver to all interferers, resulting in substantial network overhead. This paper proposes the method of distributive feedback control that intelligently allocates feedback bits over multiple feedback links and adapts feedback to channel dynamics. Using tools from stochastic optimization, the structure of the optimal control policy is characterized. Specifically, the optimal numbers of feedback bits are proved to increase with corresponding interference-channel gains and feedback is performed only when such gains are large or the transmit-CSI errors are significant. Simulation demonstrates that the proposed feedback-control design yields significant throughput gain over the conventional fixed-feedback approach especially at low mobility. © 2010 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/194373
ISSN

 

DC FieldValueLanguage
dc.contributor.authorHuang, K-
dc.contributor.authorLau, VKN-
dc.contributor.authorKim, D-
dc.date.accessioned2014-01-30T03:32:30Z-
dc.date.available2014-01-30T03:32:30Z-
dc.date.issued2010-
dc.identifier.citationConference Record - Asilomar Conference on Signals, Systems and Computers, 2010, p. 937-941-
dc.identifier.issn1058-6393-
dc.identifier.urihttp://hdl.handle.net/10722/194373-
dc.description.abstractSpatial interference avoidance is a simple and effective way of mitigating interference in multi-antenna wireless networks. The deployment of this technique requires channel-state-information (CSI) feedback from each receiver to all interferers, resulting in substantial network overhead. This paper proposes the method of distributive feedback control that intelligently allocates feedback bits over multiple feedback links and adapts feedback to channel dynamics. Using tools from stochastic optimization, the structure of the optimal control policy is characterized. Specifically, the optimal numbers of feedback bits are proved to increase with corresponding interference-channel gains and feedback is performed only when such gains are large or the transmit-CSI errors are significant. Simulation demonstrates that the proposed feedback-control design yields significant throughput gain over the conventional fixed-feedback approach especially at low mobility. © 2010 IEEE.-
dc.languageeng-
dc.relation.ispartofConference Record - Asilomar Conference on Signals, Systems and Computers-
dc.titleStochastic feedback control for spatial interference avoidance-
dc.typeConference_Paper-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/ACSSC.2010.5757705-
dc.identifier.scopuseid_2-s2.0-79958002183-
dc.identifier.spage937-
dc.identifier.epage941-

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