Performance of Indoor Visible Light Communication System Under Random Placement of LEDs

In this paper, the performance of indoor visible light communication (VLC) system with randomly deployed light-emitting-diodes (LED) using Matern hardcore point process (MHCP) is analyzed and compared with existing random geometries like binomial point process (BPP) and fixed geometries such as circular and square. It is well known fact that the signal-to-noise-ratio (SNR) profile inside the room changes with respect to LED placement as well as receiver's position. In order to achieve uniform SNR across the room, the proposed work uses MHCP based LED placement at the transmitter and a single photodiode (PD) at the receiver. Simulation results show that random placement of LED using MHCP configuration results in a much more uniform SNR profile inside the room than the random BPP and conventional circular and square LED placements. Further, our results also show that by deploying MHCP based LED placement, the average SNR across the room increases.