PAPR Reduction for OFDM based Visible Light Communication Systems using Proposed Hybrid Technique | ||||
| Menoufia Journal of Electronic Engineering Research | ||||
| Article 6, Volume 26, Issue 2, July 2017, Page 387-397 | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/mjeer.2017.63611 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| Haitham Freag1; Emad S. Hassan2; Sami El-Dolil2; Moawad Dessouky1 | ||||
| 1Dept. of Electronics and Electrical Comm., High Institute of Engineering and Technology, Kafrelsheikh, EGYPT. | ||||
| 2Dept. of Electronics and Electrical Comm., Faculty of Electronic Eng., Menoufia University, 32952, Menouf, EGYPT. | ||||
| Abstract | ||||
| Orthogonal Frequency Division Multiplexing (OFDM) is utilized with visible light communication (VLC) systems to decrease the impacts of inter-symbol interference (ISI) and to achieve communication with high speed of data transmission and huge bandwidth. In any case, the main problem in OFDM based VLC systems is high peak-to-average power ratios (PAPRs). This paper proposes a hybrid PAPR reduction technique based on signal transformation combined with clipping. The Hadamard transform is used in the proposed technique to reduce the PAPR without affecting the bit error rate (BER) of the VLC systems. The optimum clipping threshold at which the PAPR is reduced simultaneously with the improvement the BER of the VLC systems is also determined. The performance of the proposed system is assessed in terms of complementary cumulative distribution function (CCDF) and the BER. The obtained results demonstrate that the proposed procedure can simultaneously decrease the PAPR and achieve good BER performance compared to the OFDM based VLC system. | ||||
| References | ||||
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