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首页> 外文期刊>Industrial Electronics, IEEE Transactions on >Electrical and Thermal Effects of Light-Emitting Diodes on Signal-to-Noise Ratio in Visible Light Communication
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Electrical and Thermal Effects of Light-Emitting Diodes on Signal-to-Noise Ratio in Visible Light Communication

机译：可见光通信中发光二极管对信噪比的电和热效应

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摘要

Light-emitting diode (LED)-based visible light communication (VLC) has recently been promoted by the lighting industry for providing services and information for consumers in shopping malls. Communication system designs require well-defined signal-to-noise ratio (SNR). Being semiconductor devices, both LEDs and photodetectors are highly temperature-sensitive. This paper explores the electrical and thermal sensitivities of LED and photodetector together for VLC applications, and highlights the discoveries that the SNR of LED-based VLC could vary substantially over the full operating power range of the LED lighting systems. A new analysis of the SNR based on the photoelectrothermal theory has been developed. It can be used as the theoretical and design tool to predict such SNR variations. The validity of the new analysis has been confirmed with practical measurements that are consistent with theoretical predictions. The analytic approach can in principle be used as a design tool for LED-based VLC.
机译：照明行业最近促进了基于发光二极管（LED）的可见光通信（VLC），以为购物中心的消费者提供服务和信息。通信系统设计需要良好定义的信噪比（SNR）。作为半导体器件，LED和光电探测器都是高度温度敏感的。本文探讨了VLC应用中LED和光电探测器的电和热灵敏度，并强调了基于LED的VLC的SNR在LED照明系统的整个工作功率范围内可能会有很大变化的发现。基于光电热理论，对信噪比进行了新的分析。它可用作预测此类SNR变化的理论和设计工具。新分析的有效性已通过与理论预测相符的实际测量得到了证实。该分析方法原则上可以用作基于LED的VLC的设计工具。

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