Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/10294
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dc.contributor.authorSilva, Adãopt
dc.contributor.authorHolakouei, Rezapt
dc.contributor.authorCastanheira, Danielpt
dc.contributor.authorGameiro, Atíliopt
dc.contributor.authorDinis, Ruipt
dc.date.accessioned2013-04-29T10:39:13Z-
dc.date.available2013-04-29T10:39:13Z-
dc.date.issued2013-02-13-
dc.identifier.issn1687-1499pt
dc.identifier.urihttp://hdl.handle.net/10773/10294-
dc.description.abstractCoordination between base stations (BSs) is a promising solution for cellular wireless systems to mitigate intercell interference, improving system fairness, and increasing capacity in the years to come. The aim of this manuscript is to propose a new distributed power allocation scheme for the downlink of distributed precoded multicell MISO-OFDM systems. By treating the multicell system as a superposition of single cell systems we define the average virtual bit error rate (BER) of one single-cell system, allowing us to compute the power allocation in a distributed manner at each BS. The precoders are designed in two phases: first the precoder vectors are computed in a distributed manner at each BS considering two criteria, distributed zero-forcing and virtual signal-to-interference noise ratio; then the system is optimized through distributed power allocation with per-BS power constraint. The proposed power allocation scheme minimizes the average virtual BER over all user terminals and the available subcarriers. Both the precoder vectors and the power allocation are computed by assuming that the BSs have only knowledge of local channel state information. The performance of the proposed scheme is compared against other power allocation schemes that have recently been proposed for precoded multicell systems based on LTE specifications. The results also show that although our power allocation scheme is based on the minimization of the virtual uncoded BER, it also has significant gains in coded systems.pt
dc.language.isoengpt
dc.publisherSpringerpt
dc.relationFCT CADWIN (PTDC/EEA TEL/ 099241/2008)pt
dc.relationCelCoop PEst-OE/EEI/LA0008/2011pt
dc.relationCROWN (PTDC/EEA-TEL/115828/2009)pt
dc.rightsopenAccesspor
dc.subjectCellular systemspt
dc.subjectCoordinated multipointpt
dc.subjectDistributed multicell precodingpt
dc.subjectIntercell interferencept
dc.subjectDistributed power allocation and downlink transmissionpt
dc.titleA novel distributed power allocation scheme for coordinated multicell systemspt
dc.typearticlept
dc.peerreviewedyespt
ua.distributioninternationalpt
degois.publication.issue30pt
degois.publication.titleEURASIP Journal on Wireless Communications and Networkingpt
degois.publication.volume2013pt
dc.identifier.doi10.1186/1687-1499-2013-30pt
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