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dc.contributor.authorChang, Zheng
dc.contributor.authorZhang, Qianqian
dc.contributor.authorGuo, Xijuan
dc.contributor.authorRistaniemi, Tapani
dc.date.accessioned2015-10-26T09:43:00Z
dc.date.available2015-10-26T09:43:00Z
dc.date.issued2015
dc.identifier.citationChang, Z., Zhang, Q., Guo, X., & Ristaniemi, T. (2015). Energy-efficient resource allocation for OFDMA two-way relay networks with imperfect CSI. <em>Eurasip Journal on Wireless Communications and Networking</em>, 2015 (225). <a href="http://dx.doi.org/10.1186/s13638-015-0455-6">doi:10.1186/s13638-015-0455-6</a>
dc.identifier.otherTUTKAID_67414
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/47404
dc.description.abstractMost of the existed works on the radio resource allocation (RRA) problem commonly assume the channel-state information (CSI) can be perfectly obtained by the transmission source. However, such assumption is not practical in the realistic wireless systems. In this work, we consider the practical implementation issues of resource allocation in orthogonal frequency division multiple access (OFDMA) two-way relay networks: the inaccuracy of channel-state information (CSI) available to the source. Instead, only the estimated channel status is known by the source. In this context, a joint optimization of subcarrier pairing and allocation, relay selection, and transmit power allocation is formulated in OFDMA two-way amplify-and-forward relay networks. Moreover, the objective of this work is to minimize the energy consumption of the overall system. Further, to ensure the quality of service (QoS) or data rate requirement, the energy consumption must be minimized without compromising the QoS. Therefore, by applying convex optimization techniques, energy-efficient algorithms are developed with the objective to minimize the total transmit power with guaranteeing the required data rates. Through simulation studies, energy consumption performance of the systems under the proposed schemes is investigated. It can be observed that our proposed scheme can improve the energy consumption performance of the considered system.
dc.language.isoeng
dc.publisherSpringerOpen
dc.relation.ispartofseriesEurasip Journal on Wireless Communications and Networking
dc.subject.otherOFDMA
dc.subject.otherTwo-way relay
dc.subject.otherSubcarrier pairing
dc.subject.otherRadio resource allocation
dc.subject.otherImperfect channel-state information
dc.subject.otherEnergy efficiency
dc.titleEnergy-efficient resource allocation for OFDMA two-way relay networks with imperfect CSI
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-201510193400
dc.contributor.laitosTietotekniikan laitosfi
dc.contributor.laitosDepartment of Mathematical Information Technologyen
dc.contributor.oppiaineTietotekniikka
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.date.updated2015-10-19T09:15:11Z
dc.type.coarjournal article
dc.description.reviewstatuspeerReviewed
dc.relation.issn1687-1472
dc.relation.volume2015
dc.type.versionpublishedVersion
dc.rights.copyright© 2015 Chang et al. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.
dc.rights.accesslevelopenAccessfi
dc.rights.urlhttp://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.1186/s13638-015-0455-6


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© 2015 Chang et al. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.
Except where otherwise noted, this item's license is described as © 2015 Chang et al. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License.