白光LED室内可见光通信的关键技术

Key technologies of indoor visible light communication based on white LED

可见光通信是一项新兴基于白光LED的无线光通信技术,具有发射功率高、不占用无线电频谱、无电磁干扰、无电磁辐射和节约能源等优点,能够同时实现照明和通信的双重功能。阐述了可见光通信技术的发展动态,介绍基于白光LED的室内可见光通信系统,并对提高系统整体性能的若干关键技术进行了研究讨论,为白光LED室内可见光通信系统进一步研究提供依据。

The visible light communication（VLC） utilizing the white LEDs is a kind of optical wireless communication characterized by high emission power rate,don＇t take up radio spectrum,no electromagnet interference,no electromagnetic radiation and energy-saving,etc.In VLC system,white LEDs are used not only as the illuminator in the rooms,but also as the source of the communication system.This paper describes the development of VCL,introduces indoor visible light communication system based on white LED.Key techniques are analyzed to improve the whole performance of the indoor visible light communication system,providing a better basis for the further research.