File Download
  Links for fulltext
     (May Require Subscription)
Supplementary

Article: Robust beamforming in cognitive radio

TitleRobust beamforming in cognitive radio
Authors
KeywordsCognitive radio
Interference control
Robust beamforming
Issue Date2010
PublisherIEEE.
Citation
Ieee Transactions On Wireless Communications, 2010, v. 9 n. 2, p. 570-576 How to Cite?
AbstractThis letter considers the multi-antenna cognitive radio (CR) network, which has a single secondary user (SU) and coexists with a primary network of multiple users. Our objective is to maximize the service probability of the SU, subject to the interference constraints on the primary users (PUs) in the form of probability. Exploiting imperfect channel state information (CSI), with its error modeled by added Gaussian noise, we address the optimization for the beamforming weights at the secondary transmitter. In particular, this letter devises an iterative algorithm that can efficiently obtain the robust optimal beamforming solution. For the case with one PU, we show that a much simpler algorithm based on a closed-form solution for the antenna weights of a given power can be presented. Numerical results reveal that the optimal solution for the constructed problem provides an effective means to tradeoff the performance between the PUs and the SU, bridging the non-robust and worstcase based systems. © 2010 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/124734
ISSN
2015 Impact Factor: 2.925
2015 SCImago Journal Rankings: 2.340
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.accessioned2010-10-31T10:51:05Z-
dc.date.available2010-10-31T10:51:05Z-
dc.date.issued2010en_HK
dc.identifier.citationIeee Transactions On Wireless Communications, 2010, v. 9 n. 2, p. 570-576en_HK
dc.identifier.issn1536-1276en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124734-
dc.description.abstractThis letter considers the multi-antenna cognitive radio (CR) network, which has a single secondary user (SU) and coexists with a primary network of multiple users. Our objective is to maximize the service probability of the SU, subject to the interference constraints on the primary users (PUs) in the form of probability. Exploiting imperfect channel state information (CSI), with its error modeled by added Gaussian noise, we address the optimization for the beamforming weights at the secondary transmitter. In particular, this letter devises an iterative algorithm that can efficiently obtain the robust optimal beamforming solution. For the case with one PU, we show that a much simpler algorithm based on a closed-form solution for the antenna weights of a given power can be presented. Numerical results reveal that the optimal solution for the constructed problem provides an effective means to tradeoff the performance between the PUs and the SU, bridging the non-robust and worstcase based systems. © 2010 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE.-
dc.relation.ispartofIEEE Transactions on Wireless Communicationsen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsIEEE Transactions on Wireless Communications. Copyright © IEEE.-
dc.rights©2010 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.subjectCognitive radioen_HK
dc.subjectInterference controlen_HK
dc.subjectRobust beamformingen_HK
dc.titleRobust beamforming in cognitive radioen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1536-1276&volume=9&issue=2&spage=570 &epage= 576&date=2010&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/TWC.2010.5403537en_HK
dc.identifier.scopuseid_2-s2.0-76949103432en_HK
dc.identifier.hkuros173949en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-76949103432&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume9en_HK
dc.identifier.issue2en_HK
dc.identifier.spage570en_HK
dc.identifier.epage576en_HK
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridZheng, G=16176882900en_HK
dc.identifier.scopusauthoridMa, S=8553949000en_HK
dc.identifier.scopusauthoridWong, KK=7404759940en_HK
dc.identifier.scopusauthoridNg, TS=7402229975en_HK

Export via OAI-PMH Interface in XML Formats


OR


Export to Other Non-XML Formats