Cognitive cooperative MAC with one primary and two secondary users: achievable rates and optimal power control

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dc.authorid0000-0003-2378-6969
dc.authorid0000-0003-2592-3701
dc.contributor.authorEdemen, Çağatayen_US
dc.contributor.authorKaya, Onuren_US
dc.date.accessioned2015-01-15T23:02:49Z
dc.date.available2015-01-15T23:02:49Z
dc.date.issued2014-11
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.description.abstractWe consider a three-user fading cognitive cooperative multiple access channel (MAC) with one primary and two secondary transmitters. We propose two encoding/decoding strategies with varying levels of cooperation, based on block Markov superposition encoding and backward decoding. The first is an overlay model, where the secondary users (SUs) aid the transmission of the primary user (PU) by causally decoding the PU message and forwarding it while also cooperating among each other. The second is an underlay model, where the SUs cooperate by decoding and forwarding each other's messages while treating the signal received from the PU as noise. In either case, the PU is guaranteed to operate at its maximum achievable single user rate. We characterize the achievable SU rate region for both models and maximize this region as a function of the transmit powers. The simulation results show that the SU rate region can be significantly enlarged, particularly using the overlay model.en_US
dc.description.sponsorshipThis work was supported by TUBITAK under Grant 111E108. The associate editor coordinating the review of this paper and approving it for publication was S. De.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationEdemen, Ç. & Kaya, O. (2014). Cognitive cooperative MAC with one primary and two secondary users: Achievable rates and optimal power control. IEEE Communications Letters, 18(11), 1895-1898. doi:10.1109/LCOMM.2014.2360519en_US
dc.identifier.doi10.1109/LCOMM.2014.2360519
dc.identifier.endpage1898
dc.identifier.issn1089-7798
dc.identifier.issn1558-2558
dc.identifier.issue11
dc.identifier.scopus2-s2.0-84910129641
dc.identifier.scopusqualityQ1
dc.identifier.startpage1895
dc.identifier.urihttps://hdl.handle.net/11729/510
dc.identifier.urihttp://dx.doi.org/10.1109/LCOMM.2014.2360519
dc.identifier.volume18
dc.identifier.wosWOS:000345069700007
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorEdemen, Çağatayen_US
dc.institutionauthorKaya, Onuren_US
dc.institutionauthorid0000-0003-2378-6969
dc.institutionauthorid0000-0003-2592-3701
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherIEEE-INST Electrical Electronics Engineers Incen_US
dc.relation.ispartofIEEE Communications Lettersen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectChannel codingen_US
dc.subjectCognitive radioen_US
dc.subjectCooperative communicationen_US
dc.subjectMultiuser channelsen_US
dc.subjectOptimizationen_US
dc.subjectPower controlen_US
dc.subjectInformation-theoretic perspectiveen_US
dc.subjectMultiple-accessen_US
dc.subjectInterference channelsen_US
dc.subjectRadio channelsen_US
dc.subjectCapacityen_US
dc.subjectTransmitteren_US
dc.titleCognitive cooperative MAC with one primary and two secondary users: achievable rates and optimal power controlen_US
dc.typeArticleen_US

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