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dc.contributor.authorKızılırmak, R. Ç.
dc.contributor.authorNarmanlıoğlu, Ömer
dc.contributor.authorUysal, Murat
dc.date.accessioned2016-08-04T08:47:55Z
dc.date.available2016-08-04T08:47:55Z
dc.date.issued2015-10
dc.identifier.issn0090-6778
dc.identifier.urihttp://hdl.handle.net/10679/4428
dc.identifier.urihttp://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=7180320
dc.descriptionDue to copyright restrictions, the access to the full text of this article is only available via subscription.
dc.description.abstractIn this study, we investigate a relay-assisted visible light communication (VLC) system where an intermediate light source cooperates with the main light source. Specifically, we consider two light sources in an office space: one is the information source employed on the ceiling and the other one is a task light. Our system uses dc biased optical orthogonal frequency division multiplexing (DCO-OFDM) where the task light performs relaying to assist the communication and operates in half-duplex mode for both amplify-and-forward and decode-and-forward relaying. We investigate the bit error rate (BER) performance of the relay-assisted VLC system and optimize the performance through optimal ac/dc power allocation under illumination constraints. The dc power allocation is determined by sharing the number of LED chips between the terminals to satisfy a desired luminance ratio. The ac power allocation decides the fraction of the information signal power to be consumed at the terminals in order to minimize the BER. Numerical results reveal that cooperation brings significant performance gains over direct transmission. We further provide comparisons of two relaying techniques under consideration and discuss the effect of clipping noise on the error rate performance.
dc.description.sponsorshipQatar National Research Fund
dc.language.isoengen_US
dc.publisherIEEE
dc.relation.ispartofIEEE Transactions on Communications
dc.rightsrestrictedAccess
dc.titleRelay-assisted OFDM-based visible light communicationsen_US
dc.typeArticleen_US
dc.peerreviewedyes
dc.publicationstatuspublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID(ORCID 0000-0001-5945-0813 & YÖK ID 124615) Uysal, Murat
dc.contributor.ozuauthorUysal, Murat
dc.identifier.volume63
dc.identifier.issue10
dc.identifier.startpage3765
dc.identifier.endpage3778
dc.identifier.wosWOS:000363257200025
dc.identifier.doi10.1109/TCOMM.2015.2464815
dc.subject.keywordsVisible light communication
dc.subject.keywordsCooperative communication
dc.subject.keywordsOFDM
dc.identifier.scopusSCOPUS:2-s2.0-84959455958
dc.contributor.ozugradstudentNarmanlıoğlu, Ömer
dc.contributor.authorMale2


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