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Conference Paper: Robust beamforming in cognitive radio

TitleRobust beamforming in cognitive radio
Authors
KeywordsAdditive gaussian noise
Cognitive radio
Imperfect channel state information
Interference level
One-dimensional search
Issue Date2009
PublisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000784
Citation
The 69th IEEE Vehicular Technology Conference (VTC Spring 2009), Barcelona, Spain, 26-29 April 2009. In Proceedings of the 69th IEEE - VTS, Spring 2009, p. 1-4 How to Cite?
AbstractIn cognitive radio, it is crucial to control the interference from secondary users (SUs) to primary users (PUs). This paper studies the use of transmit beamforming in the cognitive secondary network for enhancing the performance of a SU while controlling the interference to the PUs. In particular, we propose to maximize the service probability of the SU with a number of probability constraints on the interference level at the PUs with the aid of imperfect channel state information (CSI). Modeling the CSI uncertainty as an additive Gaussian noise, it is shown that the optimum can be realized by second-order cone-programming (SOCP) in tandem with a one-dimensional search. Results reveal that the proposed approach provides a technique to tradeoff the performance between the PUs and the SU, making an analytical connection between non-robust and worst-case systems. © 2009 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/126202
ISBN
ISSN
References

 

DC FieldValueLanguage
dc.contributor.authorZheng, Gen_HK
dc.contributor.authorMa, Sen_HK
dc.contributor.authorWong, KKen_HK
dc.contributor.authorNg, TSen_HK
dc.date.accessioned2010-10-31T12:15:20Z-
dc.date.available2010-10-31T12:15:20Z-
dc.date.issued2009en_HK
dc.identifier.citationThe 69th IEEE Vehicular Technology Conference (VTC Spring 2009), Barcelona, Spain, 26-29 April 2009. In Proceedings of the 69th IEEE - VTS, Spring 2009, p. 1-4en_HK
dc.identifier.isbn978-1-4244-2517-4-
dc.identifier.issn1550-2252en_HK
dc.identifier.urihttp://hdl.handle.net/10722/126202-
dc.description.abstractIn cognitive radio, it is crucial to control the interference from secondary users (SUs) to primary users (PUs). This paper studies the use of transmit beamforming in the cognitive secondary network for enhancing the performance of a SU while controlling the interference to the PUs. In particular, we propose to maximize the service probability of the SU with a number of probability constraints on the interference level at the PUs with the aid of imperfect channel state information (CSI). Modeling the CSI uncertainty as an additive Gaussian noise, it is shown that the optimum can be realized by second-order cone-programming (SOCP) in tandem with a one-dimensional search. Results reveal that the proposed approach provides a technique to tradeoff the performance between the PUs and the SU, making an analytical connection between non-robust and worst-case systems. © 2009 IEEE.en_HK
dc.languageengen_HK
dc.publisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1000784en_HK
dc.relation.ispartofIEEE Vehicular Technology Conferenceen_HK
dc.rightsIEEE - VTS Vehicular Technology Conference Proceedings. Copyright © IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.subjectAdditive gaussian noise-
dc.subjectCognitive radio-
dc.subjectImperfect channel state information-
dc.subjectInterference level-
dc.subjectOne-dimensional search-
dc.titleRobust beamforming in cognitive radioen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1550-2252&volume=&spage=1&epage=4&date=2009&atitle=Robust+beamforming+in+cognitive+radio-
dc.identifier.emailMa, S: sdma@eee.hku.hken_HK
dc.identifier.emailNg, TS: tsng@eee.hku.hken_HK
dc.identifier.authorityMa, S=rp00153en_HK
dc.identifier.authorityNg, TS=rp00159en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/VETECS.2009.5073838en_HK
dc.identifier.scopuseid_2-s2.0-70349656428en_HK
dc.identifier.hkuros180590en_HK
dc.identifier.hkuros164455-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349656428&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage1-
dc.identifier.epage4-
dc.publisher.placeUnited Statesen_HK
dc.description.otherThe 69th IEEE Vehicular Technology Conference (VTC Spring 2009), Barcelona, Spain, 26-29 April 2009. In Proceedings of the 69th IEEE - VTS, Spring 2009, p. 1-4-
dc.identifier.scopusauthoridZheng, G=16176882900en_HK
dc.identifier.scopusauthoridMa, S=8553949000en_HK
dc.identifier.scopusauthoridWong, KK=7404759940en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

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