Efficient DC biased-PAM based OFDM for visible light communication system

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dc.contributor.authorZaidan, Zahraa Mustafa
dc.contributor.authorBayat, Oğuz
dc.contributor.authorAbdulkafi, Ayad Atiyah
dc.date.accessioned2022-07-07T14:05:40Z
dc.date.available2022-07-07T14:05:40Z
dc.date.issued2022en_US
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Elektrik - Elektronik Mühendisliği Bölümüen_US
dc.description.abstractThe need of high spectral efficiency to increase bandwidth utilization have been the main drivers for next generation optical wireless communication including visible light communication (VLC) systems. However, conventional optical techniques adopted Hermitian symmetry to satisfy the real and positive constraints of intensity modulation with direct detection based VLC systems on the cost of spectral efficiency loss. In this paper, a new direct current biased- pulse amplitude modulated based orthogonal frequency division multiplexing (DC-PAM-OFDM) is proposed to utilize all subcarriers without using Hermitian symmetry and hence provide more spectral efficiency for VLC systems. The proposed scheme ensures the real-valued optical signals by inserting PAM signal in frequency domain side of OFDM system, clipping, splitting, and rearranging the time domain signal instead of using Hermitian symmetry. This results in improving spectral efficiency by 100% compared to PAM based discrete multitoned modulation (DMT). In addition, theoretical analyses show that the proposed DC-PAM based OFDM scheme is more energy efficient than the PAM-DMT. Furthermore, simulation results show that the proposed scheme has better bit error rate performance and reduces the Peak-to-Average Power Ratio when compared with the existing methods under same spectral efficiency conditions.en_US
dc.identifier.citationZaidan, Z. M., Bayat, O., Abdulkafi, A. A. (2022). Efficient DC biased-PAM based OFDM for visible light communication system. Optical and Quantum Electronics, 54(8).en_US
dc.identifier.issn03068919
dc.identifier.issue8en_US
dc.identifier.scopus2-s2.0-85132922054
dc.identifier.scopusqualityQ2
dc.identifier.urihttps://hdl.handle.net/20.500.12939/2663
dc.identifier.volume54en_US
dc.identifier.wosWOS:000815069300006
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorZaidan, Zahraa Mustafa
dc.institutionauthorBayat, Oğuz
dc.language.isoen
dc.publisherSpringeren_US
dc.relation.ispartofOptical and Quantum Electronics
dc.relation.isversionof10.1007/s11082-022-03869-4en_US
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectBERen_US
dc.subjectDC-PAMen_US
dc.subjectOFDMen_US
dc.subjectPAPRen_US
dc.subjectSpectral Efficiencyen_US
dc.subjectVLCen_US
dc.titleEfficient DC biased-PAM based OFDM for visible light communication system
dc.typeArticle

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