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dc.contributor.authorSoury, Hamza*
dc.contributor.authorBader, F.*
dc.contributor.authorShaat, M.*
dc.contributor.authorAlouini, Mohamed-Slim*
dc.date.accessioned2014-11-11T14:28:47Z
dc.date.available2014-11-11T14:28:47Z
dc.date.issued2013-11-09en
dc.identifier.citationSoury H, Bader F, Shaat M, Alouini M-S (2013) Joint sub-carrier pairing and resource allocation for cognitive networks with adaptive relaying. EURASIP Journal on Wireless Communications and Networking 2013: 259. doi:10.1186/1687-1499-2013-259.en
dc.identifier.issn16871472en
dc.identifier.doi10.1186/1687-1499-2013-259en
dc.identifier.urihttp://hdl.handle.net/10754/334534en
dc.description.abstractRelayed transmission in a cognitive radio (CR) environment could be used to increase the coverage and capacity of communication system that benefits already from the efficient management of the spectrum developed by CR. Furthermore, there are many types of cooperative communications, including decode-and-forward (DAF) and amplify-and-forward (AAF). In this paper, these techniques are combined in an adaptive mode to benefit from its forwarding advantages; this mode is called adaptive relaying protocol (ARP). Moreover, this work focuses on the joint power allocation in a cognitive radio system in a cooperative mode that operates ARP in multi-carrier mode. The multi-carrier scenario is used in an orthogonal frequency division multiplexing (OFDM) mode, and the problem is formulated to maximize the end-to-end rate by searching the best power allocation at the transmitters. This work includes, besides the ARP model, a sub-carrier pairing strategy that allows the relays to switch to the best sub-carrier pairs to increase the throughput. The optimization problem is formulated and solved under the interference and power budget constraints using the sub-gradient algorithm. The simulation results confirm the efficiency of the proposed adaptive relaying protocol in comparison to other relaying techniques. The results show also the consequence of the choice of the pairing strategy. 2013 Stolojescu-Crisan and Isar; licensee Springer.en
dc.language.isoenen
dc.publisherSpringer Natureen
dc.rightsThis is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.rightsArchived with thanks to Eurasip Journal on Wireless Communications and Networkingen
dc.rights.urihttp://creativecommons.org/licenses/by/2.0/en
dc.subjectAdaptive relaying protocolen
dc.subjectAmplify-and-forwarden
dc.subjectCognitive radioen
dc.subjectCooperative communicationen
dc.subjectDecode-and-forwarden
dc.subjectPairingen
dc.subjectPower allocationen
dc.titleJoint sub-carrier pairing and resource allocation for cognitive networks with adaptive relayingen
dc.typeArticleen
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division*
dc.identifier.journalEURASIP Journal on Wireless Communications and Networkingen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionSUPELEC, Campus of Rennes, Avenue de la Boulaie CS 47601, F-35576 Cesson-Svign cedex, France*
dc.contributor.institutionElectrical Engineering Department, IUG University, P.O. Box 108, Gaza, Palestine*
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)*
kaust.authorSoury, Hamza*
kaust.authorAlouini, Mohamed-Slim*
refterms.dateFOA2018-06-13T15:45:42Z


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This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Except where otherwise noted, this item's license is described as This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.