Optimal Energy-Efficient Power Allocation Scheme with Low Complexity for Distributed Antenna System

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dc.contributor.authorWang, Hao
dc.contributor.authorYu, Xiangbin
dc.contributor.authorXu, Weiye
dc.contributor.authorWen, Benben
dc.coverage.issue1cs
dc.coverage.volume26cs
dc.date.accessioned2017-04-18T08:21:46Z
dc.date.available2017-04-18T08:21:46Z
dc.date.issued2017-04cs
dc.description.abstractIn this paper, by maximizing the energy efficiency (EE), an optimal power allocation scheme is developed for downlink distributed antenna system (DAS). Different from conventional optimal power allocation schemes that need iterative calculation, the developed scheme can provide closed-form power allocation and no iteration is required. Based on the definition of EE, the optimized objective function is firstly formulated, and then a computationally efficient algorithm is proposed to obtain the optimal number of active remote antennas and the corresponding power allocation. Using the optimal number, the multidimensional solution for the optimized function is transformed into searching one-dimensional solution. As a result, closed-form expression of power allocation coefficients is attained. Numerical results verify the effectiveness of the proposed scheme. The scheme can obtain the same EE as the conventional optimal scheme but with lower complexity, and it has more accuracy than the existing low-complexity scheme.en
dc.formattextcs
dc.format.extent353-358cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2017 vol. 26, č. 1, s. 353-358. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2017.0353en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/64744
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2017/17_01_0353_0358.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectEnergy efficiencyen
dc.subjectdistributed antenna systemen
dc.subjectpower allocationen
dc.subjectlow complexityen
dc.subjectRayleigh channel.en
dc.titleOptimal Energy-Efficient Power Allocation Scheme with Low Complexity for Distributed Antenna Systemen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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