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dc.contributor.authorPanayırcı, Erdal
dc.contributor.authorŞenol, Habib
dc.contributor.authorPoor, H. Vincent
dc.date.accessioned2019-06-27T08:05:44Z
dc.date.available2019-06-27T08:05:44Z
dc.date.issued2009
dc.identifier.isbn978-1-4244-5123-4
dc.identifier.urihttps://hdl.handle.net/20.500.12469/1110
dc.identifier.urihttps://doi.org/10.1109/PIMRC.2009.5450136
dc.description.abstractThis paper is concerned with the challenging and timely problem of joint channel estimation and data detection for orthogonal frequency division multiplexing (OFDM) systems in the presence of frequency selective and very rapidly time varying channels. The detection and estimation algorithm is based on the space alternating generalized expectation maximization (SAGE) technique which is particularly well-suited to multicarrier signal formats. In order to reduce the computational complexity of the algorithm we apply the cosine orthogonal basis functions to describe the time-varying channel. It is shown that depending on the normalized Doppler frequency only a small number of expansion coefficients is sufficient to approximate the channel perfectly and there is no need to know the correlation function of the input signal. The proposed SAGE joint detection algorithm updates the data sequences in serial and the channel parameters are updated in parallel leading to a receiver structure that also incorporates a partial interference cancelation of the interchannel interference. Computer simulations show that the cosine transformation represents the time-varying channel very effectively and the proposed algorithm has excellent symbol error rate and channel estimation performance even with a very small number of channel expansion coefficients employed in the algorithm resulting in reduction of the computational complexity substantially.en_US]
dc.language.isoengen_US
dc.publisherIEEEen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectJoint data detection and channel estimationen_US
dc.subjectOFDM systemsen_US
dc.subjectSAGE algorithmen_US
dc.subjectHigh mobility channelsen_US
dc.titleJoint Data Detection and Channel Estimation for OFDM Systems in the Presence of Very High Mobilityen_US
dc.typeconferenceObjecten_US
dc.identifier.startpage461en_US
dc.identifier.endpage465
dc.relation.journalIEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communicationsen_US
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Bilgisayar Mühendisliği Bölümüen_US
dc.identifier.wosWOS:000305824600093en_US
dc.identifier.doi10.1109/PIMRC.2009.5450136en_US
dc.identifier.scopus2-s2.0-77952806216en_US
dc.institutionauthorŞenol, Habiben_US
dc.institutionauthorPanayırcı, Erdalen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US


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