The efficiency droop impact of GaN-based LEDs on the performance of OFDM visible light communication system

被引：2
|
作者：
Lu, Huimin [1 ]
Yu, Tongjun [2 ]
Jia, Chuanyu [2 ]
Zhang, Yini [1 ]
Wang, Jianping [1 ]
Zhang, Guoyi [2 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Comp & Commun Engn, Beijing, Peoples R China
[2] Peking Univ, Sch Phys, State Key Lab Mesoscop Phys, Beijing Shi, Peoples R China
来源：
PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 13 NO 5-6 | 2016年 / 13卷 / 5-6期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
light emitting diodes; GaN; efficiency droop; visible light communication; OFDM; DISCRETE MULTITONE MODULATION; EMITTING-DIODES; NONLINEARITY; REDUCTION; SCHEME; MIMO;
D O I：
10.1002/pssc.201600002
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The physical mechanism in efficiency droop of GaN-based LEDs fabricated by metal organic chemical vapor deposition (MOCVD) was investigated by experiment and calculation. On this basis, the efficiency droop impact on the performance of orthogonal frequency division multiplexing (OFDM) visible-light communication (VLC) system was analyzed. The numerical results show that the VLC system performance decreases obviously under the impact of the LED efficiency droop. And, the performance deterioration of OFDM VLC system aggravates as FFT sampling rate increase due to signal dynamic range enlargement. Furthermore, the efficiency droop impact on the VLC performance can be alleviated by adjusting the LED operating condition. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
引用
收藏
页码：278 / 282
页数：5
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