A new precoding scheme for spectral efficient optical OFDM systems

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dc.contributor.authorHardan, Saad Mshhain
dc.contributor.authorBayat, Oğuz
dc.contributor.authorAbdulkafi, Ayad Atiyah
dc.date.accessioned2021-05-15T12:41:43Z
dc.date.available2021-05-15T12:41:43Z
dc.date.issued2018
dc.departmentMühendislik ve Doğa Bilimleri Fakültesi, Bilgisayar Mühendisliği Bölümüen_US
dc.descriptionABDULKAFI, Ayad Atiyah/0000-0002-1160-6011
dc.description.abstractAchieving high spectral efficiency is the key requirement of 5G and optical wireless communication systems and has recently attracted much attention, aiming to satisfy the ever increasing demand for high data rates in communications systems. In this paper, we propose a new precoding/decoding algorithm for spectral efficient optical orthogonal frequency division multiplexing (OFDM) scheme based visible light communication (VLC) systems. The proposed coded modulated optical (CMO) based OFDM system can be applied for both single input single output (SISO) and multiple input multiple-output (MIMO) architectures. Firstly, the real OFDM time domain signal is obtained through invoking the precoding/decoding algorithm without the Hermitian symmetry. After that, the positive signal is achieved either by adding a DC-bias or by using the spatial multiplexing technique. The proposed CMO-OFDM scheme efficiently improves the spectral efficiency of the VLC system as it does not require the Hermitian symmetry constraint to yield real signals. A comparison of the performance improvement of the proposed scheme with other OFDM approaches is also presented in this work. Simulation results show that the proposed CMO-OFDM scheme can not only enhance the spectral efficiency of OFDM-based VLC systems but also improve bit error rate (BER) performance compared with other optical OFDM schemes.en_US
dc.identifier.doi10.1016/j.optcom.2018.03.030
dc.identifier.endpage133en_US
dc.identifier.issn0030-4018
dc.identifier.issn1873-0310
dc.identifier.scopus2-s2.0-85044099816
dc.identifier.scopusqualityQ2
dc.identifier.startpage125en_US
dc.identifier.urihttps://doi.org/10.1016/j.optcom.2018.03.030
dc.identifier.urihttps://hdl.handle.net/20.500.12939/843
dc.identifier.volume419en_US
dc.identifier.wosWOS:000429305800022
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorBayat, Oğuz
dc.language.isoen
dc.publisherElsevier Science Bven_US
dc.relation.ispartofOptics Communications
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectOptical OFDMen_US
dc.subjectMIMOen_US
dc.subjectVLCen_US
dc.subjectPrecodingen_US
dc.subjectSpectral Efficiencyen_US
dc.titleA new precoding scheme for spectral efficient optical OFDM systems
dc.typeArticle

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Bilgisayar Mühendisliği Bölümü Koleksiyonu
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