Linear expansions for frequency selective channels in OFDM

dc.contributor.authorŞenol, Hande
dc.contributor.authorÇırpan, Hakan Ali
dc.contributor.authorPanayırcı, Erdal
dc.date.accessioned2019-06-27T08:06:55Z
dc.date.available2019-06-27T08:06:55Z
dc.date.issued2006
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Bilgisayar Mühendisliği Bölümüen_US
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractModeling the frequency selective fading channels as random processes we employ a linear expansion based on the Karhumen-Loeve (KL) series representation involving a complete set of orthogonal deterministic vectors with a corresponding uncorrelated random coefficients. Focusing on OFDM transmissions through frequency selective fading this paper pursues a computationally efficient pilot-aided linear minimum mean square error (MMSE) uncorrelated KL series expansion coefficients estimation algorithm. Based on such an expansion no matrix inversion is required in the proposed MMSE estimator. Moreover truncation in the linear expansion of channel is achieved by exploiting the optimal truncation property of the KL expansion resulting in a smaller computational load on the estimation algorithm. The performance of the proposed approach is studied through analytical and experimental results. We first exploit the performance of the MMSE channel estimator based on the evaluation of minimum Bayesian MSE. We also provide performance analysis results studying the influence of the effect of SNR and correlation mismatch on the estimator performance. Simulation results confirm our theoretical results and illustrate that the proposed algorithm is capable of tracking fast fading and improving performance. (c) 2005 Elsevier GmbH. All rights reserved.en_US]
dc.identifier.citation2
dc.identifier.doi10.1016/j.aeue.2005.03.008en_US
dc.identifier.endpage234
dc.identifier.issn1434-8411en_US
dc.identifier.issn1618-0399en_US
dc.identifier.issn1434-8411
dc.identifier.issn1618-0399
dc.identifier.issue3
dc.identifier.scopus2-s2.0-32044464096en_US
dc.identifier.scopusqualityQ2
dc.identifier.startpage224en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/1243
dc.identifier.urihttps://doi.org/10.1016/j.aeue.2005.03.008
dc.identifier.volume60en_US
dc.identifier.wosWOS:000235846300006en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPanayırcı, Erdalen_US
dc.language.isoenen_US
dc.publisherElsevier GMBH Urban & Fischer Verlagen_US
dc.relation.journalAEU-International Journal of Electronics and Communicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectBayesian channel estimationen_US
dc.subjectOFDM systemsen_US
dc.subjectLinear expansionsen_US
dc.titleLinear expansions for frequency selective channels in OFDMen_US
dc.typeArticleen_US
dspace.entity.typePublication

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