Models of the visible light channel

Abstract

For the indoor wireless communication based on white light LED as the new communication system, the establishment of the channel model has not been determined. The measurement and establishment of it are still in its exploratory stages. This chapter makes a preliminary modeling analysis of the visible light channel. The present research on visible light communication systems is mostly based on white LEDs. Thus, first we make a modeling analysis of the generic LED frequency response model, and then secondly, we introduce the physical characteristics and modulation bandwidth of several LEDs, which are commonly used in experiments.