Performance Analysis of a Li-Fi System under Ambient Light Conditions

Abstract

Light Fidelity (Li-Fi) is a high-speed data transmission to transmit data in the visible light spectrum (350 nm to 750 nm) using light-emitting diodes (LEDs). Li-Fi can be a complementary wireless technique to high speed traffic in an indoor environment. Li-Fi system is limited in operation due to ambient noise from different illumination sources. The main sources of ambient noise are conventional fluorescent light, incandescent lamps, and sunlight. Photo-detectors are exposed to these sources degrading the overall performance of the link. This work highlights the performance of Li-Fi communication under different modulation techniques and using various ambient noise sources. An experimental Li-Fi testbed is designed and tested to analyze the performance.