Key technologies of indoor visible light communication based on white LED

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.