Efficient Relay Selection Algorithm for Non-Orthogonal Amplify-and-Forward Cooperative Systems over Block-Fading Channels

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dc.contributor.authorYunida, Yunida
dc.contributor.authorMuharar, Rusdha
dc.contributor.authorAway, Yuwaldi
dc.contributor.authorNasaruddin, Nasaruddin
dc.coverage.issue2cs
dc.coverage.volume29cs
dc.date.accessioned2020-10-09T10:59:15Z
dc.date.available2020-10-09T10:59:15Z
dc.date.issued2020-06cs
dc.description.abstractIn this paper, an efficient relay selection (RS) algorithm for non-orthogonal amplify-and-forward (NAF) cooperative systems over block-fading channels, also known as block-fading NAF (BFNAF) protocol, is developed. The best relay is selected from a subset of available relay nodes based on the maximum criterion of their capacity bounds in half-duplex (HD) mode, together with the power allocation, to obtain the energy efficiency (EE) for the proposed RS scheme. We derived an exact closed-form expression of the outage probability and throughput for evaluating the system performance. The energy consumption was also numerically evaluated to determine the optimized EE of the proposed RS scheme for each transmission protocol with two modulation schemes. The numerical results indicated that the proposed RS scheme with the BFNAF protocol outperforms the previous RS scheme with orthogonal AF (OAF) protocol in terms of both the outage probability and the throughput as the number of relays is increased and the average transmit power is optimally allocated for each transmission phase. Moreover, in the case of the optimized EE, it is found that by using quadrature amplitude modulation (QAM), the EE of the proposed RS scheme is 48.9% higher than that of binary phase-shift keying (BPSK) modulation.en
dc.formattextcs
dc.format.extent386-396cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2020 vol. 29, č. 2, s. 386-396. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2020.0386en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/195197
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2020/20_02_0386_0396.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectBlock-fadingen
dc.subjectcapacity bounden
dc.subjectefficient relay selectionen
dc.subjectenergy efficiencyen
dc.subjectnon-orthogonal amplify-and-forwarden
dc.subjectpower allocationen
dc.titleEfficient Relay Selection Algorithm for Non-Orthogonal Amplify-and-Forward Cooperative Systems over Block-Fading Channelsen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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