Iterative channel estimation approach for space-time/frequency coded OFDM systems with transmitter diversity

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dc.authorid0000-0002-3591-6567
dc.authorid0000-0001-7328-6626
dc.authorid0000-0001-5716-5488
dc.contributor.authorÇırpan, Hakan Alien_US
dc.contributor.authorPanayırcı, Erdalen_US
dc.contributor.authorDoğan, Hakanen_US
dc.date.accessioned2015-01-15T23:00:08Z
dc.date.available2015-01-15T23:00:08Z
dc.date.issued2004-06
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.description.abstractFocusing on transmit diversity orthogonal frequency division multiplexing (OFDM) transmission through frequency selective channels, this paper pursues novel iterative channel estimation approaches for both space-frequency OFDM (SF-OFDM) and space-time OFDM (ST-OFDM) systems. Relying on the unifying signal model for SF-OFDM and ST-OFDM transmitter diversity systems, we develop computationally efficient, maximum a posteriori (MAP) channel estimation algorithms according to the MAP criterion. The algorithms require a convenient representation of the discrete multipath fading channel based on the Karhunen-Loeve (KL) orthogonal expansion and estimates the complex channel parameters of each subcarriers iteratively using the expectation-maximisation (EM) method. In order to explore the performance, the closed-form expression for the average symbol error rate (SER) probability is derived for the maximum ratio combiner (MRC). Furthermore, to benchmark performance of the MAP channel estimator, the modified Cramer-Rao bound of channel estimates is also derived. Finally, we provide simulation results studying the influence of delay spread, propagation parameters and modelling mismatch on the performance of channel estimation techniques. Simulation results confirm our theoretical analysis and illustrate that the proposed algorithms are capable of tracking fast fading and improving overall performance.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationÇırpan, H. A., Panayırcı, E. & Doğan, H. (2004). Iterative channel estimation approach for space‐time/frequency coded OFDM systems with transmitter diversity. European Transactions on Telecommunications, 15(3), 235-248. doi:10.1002/ett.969en_US
dc.identifier.doi10.1002/ett.969
dc.identifier.endpage248
dc.identifier.issn1120-3862
dc.identifier.issue3
dc.identifier.scopus2-s2.0-3042663181
dc.identifier.scopusqualityN/A
dc.identifier.startpage235
dc.identifier.urihttps://hdl.handle.net/11729/156
dc.identifier.urihttp://dx.doi.org/10.1002/ett.969
dc.identifier.volume15
dc.identifier.wosWOS:000222397300009
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_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.subjectMaximum-likelihooden_US
dc.subjectFading channelsen_US
dc.subjectExpansionen_US
dc.subjectChannel estimationen_US
dc.subjectOrthogonal frequency division multiplexingen_US
dc.subjectChannel estimatoren_US
dc.subjectBandwidthen_US
dc.subjectBroadband networksen_US
dc.subjectComputer simulationen_US
dc.subjectDecodingen_US
dc.subjectFast Fourier transformsen_US
dc.subjectMatrix algebraen_US
dc.subjectProbabilityen_US
dc.subjectWireless telecommunication systemsen_US
dc.subjectIterative channel estimationen_US
dc.subjectMaximum ratio combiner (MRC)en_US
dc.subjectSingle-carrier modulationen_US
dc.subjectSpace-time block code (STBC)en_US
dc.titleIterative channel estimation approach for space-time/frequency coded OFDM systems with transmitter diversityen_US
dc.typeArticleen_US
dspace.entity.typePublication

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