Optimizing the Light Source Layout of the Indoor Visible Light Communication System

Abstract

Aiming at the problem of uneven illuminance distribution in traditional indoor optical communication systems, this paper proposes a square + elliptical layout, using simulated annealing particle swarm algorithm to optimize the spacing of LED light sources, and optimize the uniformity of system illuminance and signal-to-noise ratio. The simulation results show that the optimized square + elliptical layout illumination ranges from 359.25 lx to 451.05 lx, and the mean square error reaches 12.66 lx. Signal noise ratio is between 18.54 dB and 20.75 dB, and the mean square error is 0.39 dB. Compared with the traditional square and elliptical layout, the illumination performance and communication performance are improved clearly, which provides a new reference scheme for indoor light source layout.

Keywords

• Visible light communication system
• illuminance
• signal-to-noise ratio
• light source layout