Maximum a posteriori multipath fading channel estimation for OFDM systems

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dc.authorid0000-0001-7328-6626
dc.authorid0000-0002-3591-6567
dc.contributor.authorPanayırcı, Erdalen_US
dc.contributor.authorÇırpan, Hakan Alien_US
dc.date.accessioned2015-01-15T22:59:44Z
dc.date.available2015-01-15T22:59:44Z
dc.date.issued2002-10
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.description.abstractIn this paper, a non-data-aided maximum a posteriori (MAP) channel estimation technique for OFDM systems employing M-PSK modulation scheme is proposed. The technique requires a convenient representation of the discrete multipath fading channel based on the Karhunen-Loeve orthogonal expansion and estimates the complex channel parameters of each subcarriers iteratively in frequency domain using the Expectation-Maximization (EM) algorithm. Pilot symbols are employed to choose reliable initial values of the unknown channel parameters. An analytical expression is derived for the exact Cramer-Rao lower bound of the proposed MAP channel estimator. Moreover, robustness of estimator to changes in channel correlation and signal-to-noise ratio is also analyzed. The performance is presented in terms of the mean-square error and the uncoded symbol error rate for a system employing QPSK signaling. Computer simulations demonstrate that the performance of OFDM systems using coherent demodulation based on our channel estimation can be significantly improved.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationPanayırcı, E. & Çırpan, H. (2002). Maximum a posteriori multipath fading channel estimation for OFDM systems. European Transactions on Telecommunications, 13(5), 487-494. doi:10.1002/ett.4460130509en_US
dc.identifier.doi10.1002/ett.4460130509
dc.identifier.endpage494
dc.identifier.issn1120-3862
dc.identifier.issn1936-6086
dc.identifier.issue5
dc.identifier.scopus2-s2.0-0042403653
dc.identifier.scopusqualityN/A
dc.identifier.startpage487
dc.identifier.urihttps://hdl.handle.net/11729/110
dc.identifier.urihttp://dx.doi.org/10.1002/ett.4460130509
dc.identifier.volume13
dc.identifier.wosWOS:000179798200008
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakConference Proceedings Citation Index – Science (CPCI-S)en_US
dc.indekslendigikaynakScience Citation Index Expanded (SCI-EXPANDED)en_US
dc.institutionauthorPanayırcı, Erdalen_US
dc.institutionauthorid0000-0001-7328-6626
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherAssoc Elettrotecnica Ed Elettronica Italianaen_US
dc.relation.ispartofEuropean Transactions on Telecommunicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectEm algorithmen_US
dc.subjectChannel estimationen_US
dc.subjectOrthogonal frequency division multiplexingen_US
dc.subjectChannel estimatoren_US
dc.titleMaximum a posteriori multipath fading channel estimation for OFDM systemsen_US
dc.typeArticleen_US
dspace.entity.typePublication

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