Research On Blind Separation Technology For The Signal In The Receiver Of LED Light Communication

Visible light communication is a novel wireless optical communication technology and rose with development of white LED fabrication techniques. White LED devices are used not only for illuminating rooms but also for an optical wireless communication system which is suitable for indoor private networks. Visible light communication will provides a safety, facility communication condition.This paper introduces the work principle of LED visible light communication, we simulate indoor visible channel and OOK modulation technology in the transmition .for multi-path effect arising from the inter-symbol interference, Put forward a blind source separation method and use it to process the mixed-signal in the receiver of visible light communication . An algorithm based on the forward filter for the convolutive mixtured source signals is proposed and use it to separate double convolutive mixtured source signal ,reached the purposes of suppressing inter-symbol interference .