Modeling of Multiplexing Indoor Light Fidelity (Li-Fi) Technology Using Movable LED Panel

Abstract

Light fidelity (Li-Fi) technology emerged to over-come wireless technology problems in terms of increasing network capacity, efficiency, availability and security. However, the limitations of Li-Fi technology that can only be applied to line of sight (LOS) conditions, it is necessary to develop a multiplexing system on the Li-Fi technology to increase bandwidth efficiency, especially for indoor applications. Therefore, this study aims to design and analyze the proposed model of multiplexing indoor Li-Fi system using movable light emitting diode (LED) panel scheme. The modeling is carried out for 2 multiple input multiple output (MIMO) scenarios including 2x2 channels and 4x4 channels of multiplexing systems by varying the channel spacing value from 5 nm up to 25 nm. Observation of system model performance based on the parameter values of bit error rate (BER), Q-factor, signal to noise ratio (SNR), and optical received power. The results of the received power value on the receiving side shows that there is no significant difference values for either the 2x2 multiplexing system or the 4x4 multiplexing system. The increase in the channel spacing value affects the system performance improvement, where the 25 nm channel spacing scenario has the smallest BER value and the highest Q-factor value, especially on the fourth channel.