Effect of Bidirectional Reflector Technology on the Non-line-of-sight propagation of Light Fidelity System
Satea Hikmat Alnajjar, Ahmed Majid Hameed
Abstract
Light fidelity is a future technology due to significant advancements in Light-Emitting Diodes (LEDs) and visible-light communication. Existing LEDs for illumination in homes, factories, offices, and streets have large bandwidths, are secure, and exhibit high data rates; hence, LED has recently attracted considerable attention. This study investigates the effects of a bidirectional reflector technology on the vulnerability of received signals from five LEDs due to the nonline of sight that occurs because of walls of a standard room with a dimension of 5 × 5 × 3 m; the proposed indoor system supports a 1-Gbps data rate. The system was evaluated in phrases of the bit error rate, quality factor, signal power, and electrical signal-to-noise ratio. The effect of the irradiance angle variation on the quality factor and bit error rate of the signal was demonstrated in reflectivities of approximately 99% and 0.8%. Bidirectional reflector technology was used to enhance the system’s performance due to the dispersion of the received signal. Therefore, this technology demonstrated its ability to correct reflected signals.