Line-of-sight Visible Light Communication System Design and Demonstration

Date Added: May 2010
Format: PDF

With the emergence of high lumen output white lighting LEDs, visible light communication has become an intriguing technology to realize low cost data transmission in conjunction with lighting. In this paper, the authors discuss some key issues in practical Line-Of-Sight (LOS) visible light communication system design. They include a transmitter, channel model, and receiver front-end. A transmitter containing white LED arrays should be designed to achieve required lighting distribution and reliable data transmission at the same time. A basic LOS channel model to characterize the path loss and received optical power is also needed for optimization of the receiver under major noise sources. Finally they show a practical indoor LOS visible light communication system to demonstrate some of their analyses.