关键词: 可见光, 按需路由, 无线局域网

Abstract:

The LED(Light Emitting Diode)light communication protocol is currently limited to point to point short-distance communication,in order to improve the communication distance between indoor points, a light communication protocol based on the on-demand routing algorithm is designed, setting up a self-organizing and selfhealing wireless LAN(Local Area Network) indoor system. Simulation experiment and system testing is performed in the communication process between two indoor nodes after twice routings. Transceiver unit uses a pointtopoint halfduplex reliable communication. In the experiment,the communication rate is up to 30 bit/s and communication distance is about as three times as the direct communication, we find that the communication system based on this protocol can achieve the reliable routing path selection and adaptive transmission of sensor data in the space taht the light can illuminate.

Key words: visible-light；on-demand routing；wireless local area network（LAN）