Performance of indoor VLC and illumination under multiple reflections

Reflection paths, for easier analysis, are usually neglected in dual functional performance estimation of visible light communication (VLC) systems. In this paper, the impact of reflection paths on channel frequency response and general illumination is investigated systematically through mathematical modeling and quantitative simulation. Numerical results indicate that, in typical indoor scenarios, as whole diffuse components are included in analytical VLC model, the typical 3 dB channel bandwidth is reduced to less than 10 MHz from original ~100 MHz of limited diffuse case. Furthermore, the reflection paths are capable of providing about 325 lux additional illuminance in the illumination area, up to 37.9% extra contribution compared to the line of sight (LOS) component.