A Hybrid PAPR Reduction Scheme for Optical Wireless OFDM Communication Systems


Abdulkafi, Ayad Atiyah and Alias, Mohamad Yusoff and Hussein, Yaseein Soubhi and Omar, Nazaruddin and Salleh, Kamarulzamin (2018) A Hybrid PAPR Reduction Scheme for Optical Wireless OFDM Communication Systems. KSII Transactions on Internet and Information Systems, 12 (3). pp. 1136-1151. ISSN 1976-7277

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This paper proposes a new hybrid scheme to decrease the high peak to average power ratio (PAPR) of optical orthogonal frequency division multiplexing (OFDM) signals in visible light communication (VLC) systems. The PAPR causes nonlinear signal distortions and high power requirements for the VLC transmitter (light emitting diode, LED). The proposed method is applicable for both direct current-biased optical OFDM (DCO-OFDM) and asymmetrically clipped optical OFDM (ACO-OFDM). In the proposed scheme, the PTS method is firstly modified to fit both optical OFDM approaches transmission and then combined with signal clipping method for further PAPR reduction and bit error rate (BER) improvement of the VLC system. The performance of hybrid scheme has been evaluated and compared with the original OFDM based VLC system, conventional PTS and clipping methods. The results show that the hybrid scheme outperforms other methods in terms of both the PAPR reduction and BER performance.

Item Type: Article
Uncontrolled Keywords: Orthogonal frequency division multiplexing, OFDM, VLC, PAPR, PTS, Clipping
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Rosnani Abd Wahab
Date Deposited: 08 Nov 2020 11:04
Last Modified: 08 Nov 2020 11:04
URII: http://shdl.mmu.edu.my/id/eprint/7218


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