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dc.contributor.authorZafar, Ammar
dc.contributor.authorRadaydeh, Redha M.
dc.contributor.authorChen, Yunfei
dc.contributor.authorAlouini, Mohamed-Slim
dc.date.accessioned2013-09-01T05:55:39Z
dc.date.available2013-09-01T05:55:39Z
dc.date.issued2014-01
dc.identifier.citationZafar, A., Radaydeh, R. M., Chen, Y., & Alouini, M.-S. (2014). Power Allocation Strategies for Fixed-Gain Half-Duplex Amplify-and-Forward Relaying in Nakagami-m Fading. IEEE Transactions on Wireless Communications, 13(1), 159–173. doi:10.1109/twc.2013.120113.121944
dc.identifier.doi10.1109/TWC.2013.120113.121944
dc.identifier.urihttp://hdl.handle.net/10754/300621
dc.descriptionExtended version of the article submitted to IEEE TWireless
dc.description.abstractIn this paper, we study power allocation strategies for a fixed-gain amplify-and-forward relay network employing multiple relays. We consider two optimization problems for the relay network: 1) maximizing the end-to-end signal-to-noise ratio (SNR) and 2) minimizing the total power consumption while maintaining the end-to-end SNR over a threshold value. We investigate these two problems for two relaying protocols of all-participate (AP) relaying and selective relaying and two cases of feedback to the relays, namely full and limited. We show that the SNR maximization problem is concave and that the power minimization problem is convex for all protocols and feedback cases considered. We obtain closed-form expressions for the two problems in the case of full feedback and solve the problems through convex programming for limited feedback. Numerical results show the benefit of having full feedback at the relays for both optimization problems. However, they also show that feedback overhead can be reduced by having only limited feedback to the relays with only a small degradation in performance.
dc.description.sponsorshipThis work was funded by King Abdulaziz City of Science and Technology (KACST).
dc.language.isoen
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.relation.urlhttps://ieeexplore.ieee.org/document/6678680/
dc.relation.urlhttps://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6678680
dc.rights(c) 2014 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
dc.subjectAmplify-and-forward
dc.subjectenergy-efficiency
dc.subjectfixed-gain
dc.subjectfull feedback
dc.subjecthalf-duplex
dc.subjectlimited feedback
dc.subjectNakagami-m fading
dc.subjectoptimal power allocation
dc.titlePower Allocation Strategies for Fixed-Gain Half-Duplex Amplify-and-Forward Relaying in Nakagami-m Fading
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering
dc.contributor.departmentElectrical Engineering Program
dc.identifier.journalIEEE Transactions on Wireless Communications
dc.eprint.versionPost-print
dc.contributor.institutionCollege of Engineering Department, Alfaisal University, Riyadh, Saudi Arabia 11533
dc.contributor.institutionSchool of Engineering, University of Warwick, Coventry, UK CV4 7AL
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
dc.identifier.arxivid1211.5931
kaust.personZafar, Ammar
kaust.personAlouini, Mohamed-Slim
refterms.dateFOA2018-06-14T06:36:13Z
dc.date.posted2012-11-26


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