Non-data aided EM-Based channel estimation for OFDM systems with time-varying fading channels

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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.accessioned2015-07-14T23:48:29Z
dc.date.available2015-07-14T23:48:29Z
dc.date.issued2002
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 computationally efficient algorithm is presented for maximum a posteriori (MAP) channel estimation for OFDM systems employing M-PSK modulation scheme with additive Gaussian noise, based on the Expectation Maximization (EM) method. A non-data-aided scheme is considered for the estimation of a multipath time-varying channel by averaging over the M-PSK signal constellation. For this, an EM algorithm is derived which estimates the complex channel parameters of each subcarriers iteratively in frequency domain and which converges to the true MAP estimation of the Unknown channel, The algorithm requires a convenient representation of die discrete multipath fading channel based on the Karhumen-Loeve orthogonal expansion. The algorithm is applied to the QPSK modulated OFDM systems and efficiency of the method proposed is shown by the computer simulations.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationPanayırcı, E. & Çırpan, H. A. (2002). Non-data aided EM-Based channel estimation for OFDM systems with time-varying fading channels. 3rd International Workshop on Multi-Carrier Spread-Spectrum and Related Topics, 293-301.en_US
dc.identifier.endpage301
dc.identifier.isbn0792376536
dc.identifier.startpage293
dc.identifier.urihttps://hdl.handle.net/11729/680
dc.identifier.wosWOS:000176017300032
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakConference Proceedings Citation Index – Science (CPCI-S)en_US
dc.institutionauthorPanayırcı, Erdalen_US
dc.institutionauthorid0000-0001-7328-6626
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherKluwer Academic Publishersen_US
dc.relation.ispartof3rd International Workshop on Multi-Carrier Spread-Spectrum and Related Topicsen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.titleNon-data aided EM-Based channel estimation for OFDM systems with time-varying fading channelsen_US
dc.typeConference Objecten_US
dspace.entity.typePublication

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