A New Method For Increasing the Accuracy of EM-based Channel Estimation

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dc.contributor.authorSadough, Seyed Mohammad-Sajad
dc.contributor.authorModarresi, Mohammad
dc.coverage.issue4cs
dc.coverage.volume20cs
dc.date.accessioned2016-03-01T09:16:16Z
dc.date.available2016-03-01T09:16:16Z
dc.date.issued2011-12cs
dc.description.abstractIt was recently shown that the detection performance can be significantly improved if the statistics of channel estimation errors are available and properly used at the receiver. Although in pilot-only channel estimation it is usually straightforward to characterize the statistics of channel estimation errors, this is not the case for the class of data-aided (semi-blind) channel estimation techniques. In this paper, we focus on the widely-used data-aided channel estimation techniques based on the expectation-maximization (EM) algorithm. This is achieved by a modified formulation of the EM algorithm which provides the receiver with the statistics of the estimation errors and properly using this additional information. Simulation results show that the proposed data-aided estimator outperform its classical counterparts in terms of accuracy, without requiring additional complexity at the receiver.en
dc.formattextcs
dc.format.extent968-975cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2011, vol. 20, č. 4, s. 968-975. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/56938
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2011/11_04_968_975.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectEM algorithmen
dc.subjectVBEM algorithmen
dc.subjectjoint iterative data detection and channel estimationen
dc.subjectcharacterizing channel estimation errorsen
dc.subjectOFDMen
dc.titleA New Method For Increasing the Accuracy of EM-based Channel Estimationen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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