Energy Efficient Power Allocation for Distributed Antenna System over Shadowed Nakagami Fading Channel

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dc.contributor.authorWang, Ying
dc.contributor.authorYu, Xiangbin
dc.contributor.authorLi, Yang
dc.contributor.authorWu, Binbin
dc.coverage.issue4cs
dc.coverage.volume24cs
dc.date.accessioned2016-01-06T08:08:13Z
dc.date.available2016-01-06T08:08:13Z
dc.date.issued2015-12cs
dc.description.abstractIn this paper, the energy efficiency (EE) of downlink distributed antenna system (DAS) with multiple receive antennas is investigated over composite fading channel that takes the path loss, shadow fading and Nakagami-m fading into account. Our aim is to maximize EE which is defined as the ratio of the transmission rate to the total consumed power under the constraints of maximum transmit power of each remote antenna. According to the definition of EE and using the upper bound of average EE, the optimized objective function is provided. Based on this, utilizing Karush-Kuhn-Tucker (KKT) conditions and mathematical derivation, a suboptimal energy efficient power allocation (PA) scheme is developed, and closed-form PA coefficients are obtained. The developed scheme has the EE performance close to the existing optimal scheme. Moreover, it has relatively lower complexity than the existing scheme because only the statistic channel information and less iteration are required. Besides, it includes the scheme in composite Rayleigh channel as a special case. Simulation results show the effectiveness of the developed scheme.en
dc.formattextcs
dc.format.extent1077-1083cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2015 vol. 24, č. 4, s. 1077-1083. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2015.1077en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/51909
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2015/15_04_1077_1083.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectDistributed antenna systemen
dc.subjectenergy efficiencyen
dc.subjectpower allocationen
dc.subjectpath lossen
dc.subjectNakagami channelen
dc.titleEnergy Efficient Power Allocation for Distributed Antenna System over Shadowed Nakagami Fading Channelen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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