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Investigation of Li-Fi system performance under the influence of ambient noise and external white light



  1. Amity School of Engineering & Technology, Amity University, Noida, 201313, India


In this paper, we propose an indoor, short-range communication system using light fidelity model and the performance of the system has been analyzed under the influence of external white light and ambient noise. The system performance has been optimized considering compressed spectrum return-to-zero, return-to-zero and non-return-to-zero modulation formats at different link distances and data rates. Effect of variation of transmitter half-angle, bandwidth of light emitting diode and optical filter respectively on the received signal quality has also been examined. It has been discovered that NRZ modulation format performs better for a given link distance and data rate as compared to other modulation schemes. Ambient noise has significant effect on deteriorating the received signal quality as Q-factor goes below the unacceptable limits for the ambient noise power exceeding -110 dBm..


Light fidelity, Return-to-zero, Non-return-to-zero, Compressed spectrum return-to-zero, External white light, Ambient noise.

Submitted at: Sept. 8, 2020
Accepted at: Nov. 24, 2021


AANCHAL SHARMA, SANMUKH KAUR, HANEET RANA, Investigation of Li-Fi system performance under the influence of ambient noise and external white light, Journal of Optoelectronics and Advanced Materials Vol. 23, Iss. 11-12, pp. 543-553 (2021)