Selective mapping and restorable clipping joint scheme for light-emitting diode nonlinearity alleviation in visible light communication system

被引：1

作者：

Yan, Chaowen ^{[1
]}

Wang, Jianping ^{[1
]}

Lu, Huimin ^{[1
]}

Shi, Yinjia ^{[2
]}

Zhang, Yini ^{[1
]}

机构：

[1] Univ Sci & Technol Beijing, Sch Comp & Commun Engn, 30 Xueyuan Rd, Beijing 100083, Peoples R China

[2] Univ Sci & Technol Beijing, Sch Automat, 30 Xueyuan Rd, Beijing 100083, Peoples R China

来源：

OPTICAL ENGINEERING | 2016年 / 55卷 / 05期

基金：

北京市自然科学基金;

关键词：

light-emitting diode nonlinearity; visible light communication; selective mapping; restorable clipping; AVERAGE POWER RATIO; LED NONLINEARITY; OFDM; COMPENSATION; MITIGATION; REDUCTION; WIRELESS; VLC;

D O I：

10.1117/1.OE.55.5.056106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A joint algorithm, integrating selective mapping (SLM) and restorable clipping (RC), is proposed for the direct current-biased optical orthogonal frequency division multiplexing (DCO-OFDM) and visible light communication (VLC) system to reduce the nonlinearity impacts of light-emitting diode (LED) aggravated by high peak-to-average power ratio (PAPR) and DC-bias. The performance of DCO-OFDM VLC system is analyzed and discussed with different techniques of LED nonlinearity alleviation. The simulation results show that compared to the original DCO-OFDM VLC system, the system with the proposed scheme can achieve about 4.8 dB improvement of PAPR reduction and 7 dB improvement of bit error rate (BER) performance. The reason is that the signals acquiring the desired shape in LED linear region can be recovered correctly without distortion induced by LED nonlinearity. It is demonstrated that the proposed SLM-RC technique effectively reduces not only PAPR but also the impacts of LED nonlinearity without BER deterioration. (C) 2016 Society of Photo-Optical Instrumentation Engineers (SPIE)

引用

页数：5

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