LED无线双向光通信系统

LED Two-way Wireless Optical Communication System

在满足室内照明度要求的情况下,在室内实现下行通信;同时以三基色LED为基础,终端可以将预发送信息调制成数字脉冲,通过LED发送到天花板的接收基站,每一个用户用不同的正交地址码以示区别,基站接收机接收到光信号后,将光信号解调成数字信号,识别是哪一个用户发送的信息,并将信息传送到外部网络,实现终端的上行通信。

To satisfy the requirement of interior lighting, indoors realize downward communication; On the basis of the tricolor LED at the same time, the terminal can make information sent into digital pulse, sent LED to the receiving station of the ceiling, each user use different orthogonal address code in order to show the difference, the receiving station receive to light signals, then linght signals are demodulated into digital signals for identify user’s information, and transfer the information to the external network, achieve the upward communication.