Combined Envelope Scaling with Modified SLM Method for PAPR Reduction in OFDM-Based VLC Systems

被引：0
|
作者：
Touhami R. [1 ]
Slimani D. [1 ]
Abdulkafi A.A. [2 ]
Hussein Y.S. [3 ]
Alias M.Y. [4 ]
机构：
[1] Electronic University of Ferhat Abbas Setif 1, Setif
[2] Electrical Engineering, Tikrit University, Salahadin, Tikrit
[3] Department of Information Technology and Computer Science, Ahmed Bin Mohmmed College, Qatar,Doha
[4] Faculty of Engineering, Multimedia University, Cyberjaya, Selangor
来源：
Journal of Optical Communications | 2023年 / 44卷 / s1期
关键词：
OFDM; PAPR; scaling; SLM; VLC;
D O I：
10.1515/joc-2019-0273
中图分类号：
学科分类号：
摘要：
Orthogonal frequency-division multiplexing technique (OFDM) has been adopted widely as a modulation technique for radio frequency (RF) and optical communication systems such as visible-light communication (VLC) due to its high spectral efficiency and low-complexity implementation. VLC-OFDM is recommended in 5↠G mobile communication. However, VLC-OFDM suffer from the high peak to-average power ratio (PAPR). In this paper, a modified selective mapping (MSLM) method is applied to the proposed system followed by a new envelope scaling process for further reductions in PAPR of VLC-OFDM system. Simulation results show that the proposed method reduces the PAPR by about 6.8 and 1.7↠dB comparing with the original signal and the traditional SLM with a number of rotation vector U = 8, respectively. © 2020 Walter de Gruyter GmbH, Berlin/Boston 2020.
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