Sparse Channel Estimation with Clipping Noise in DCO-OFDM Based VLC Systems

dc.contributor.authorBektaş, Ekin Başak
dc.contributor.authorPanayırcı, Erdal
dc.date.accessioned2021-01-28T11:23:44Z
dc.date.available2021-01-28T11:23:44Z
dc.date.issued2020
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.description.abstractIn this paper a new computationally efficient and high performance channel estimation algorithm is proposed for DC-biased optical OFDM (DCO-OFDM) systems in indoor visible light communications (VLC) in the presence of a clipping noise. The sparse structure of the channel is taken into consideration in the channel estimation algorithm. The algorithm has an iterative structure and aims at reducing the effect of the clipping noise, inevitably generated by the DCO-OFDM systems. In te algorithm, the clipping noise is estimated in the time-domain and compensated for its effect in the frequency-domain. The initial values of the channel, including sparse channel path gains and the path delays, are determined by the least-squares (LS) and the ESPRIT algorithms, respectively, by making use of the pilots. Computer simulations indicate that the proposed algorithm converge in 3 iterations at most and yields excellent bit error rate (BER) and mean-square error (MSE) performances for DC-biased optical OFDM (DCO-OFDM) based systems.en_US
dc.identifier.citation4
dc.identifier.doi10.1109/BlackSeaCom48709.2020.9235008en_US
dc.identifier.isbn9781728171272
dc.identifier.scopus2-s2.0-85096635350en_US
dc.identifier.scopusqualityN/A
dc.identifier.urihttps://hdl.handle.net/20.500.12469/3771
dc.identifier.urihttps://doi.org/10.1109/BlackSeaCom48709.2020.9235008
dc.identifier.wosqualityN/A
dc.institutionauthorBektaş, Ekin Başaken_US
dc.institutionauthorPanayırcı, Erdalen_US
dc.language.isoenen_US
dc.publisherIEEEen_US
dc.relation.journalIEEE International Black Sea Conference on Communications and Networkinen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/embargoedAccessen_US
dc.subjectChannel estimationen_US
dc.subjectDC biased optical OFDM (DCO-OFDM)en_US
dc.subjectNonlinear clipping noiseen_US
dc.subjectVisible light communicationsen_US
dc.subjectVLCen_US
dc.titleSparse Channel Estimation with Clipping Noise in DCO-OFDM Based VLC Systemsen_US
dc.typeConference Objecten_US
dspace.entity.typePublication

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