Received Power Analysis of Visible Light LoS and NLoS System using Direct Detection

International Journal of Electronics and Communication Engineering

© 2025 by SSRG - IJECE Journal

Volume 12 Issue 1

Year of Publication : 2025

Authors : Sagupha Parween, Aruna Tripathy

10.14445/23488549/IJECE-V12I1P109

How to Cite?

Sagupha Parween, Aruna Tripathy, "Received Power Analysis of Visible Light LoS and NLoS System using Direct Detection," SSRG International Journal of Electronics and Communication Engineering, vol. 12,  no. 1, pp. 118-128, 2025. Crossref, https://doi.org/10.14445/23488549/IJECE-V12I1P109

Abstract:

Optical wireless Communication (OWC) has emerged as a potential alternative to Radio Frequency (RF) technologies for high-speed indoor communication in recent years. An Indoor OWC, i.e. visible light communication (VLC) system, is investigated in this paper. The system operates similarly to optical fiber-based communication. However, the indoor wireless system uses a free space transmission medium rather than an optical fiber. In this paper, an indoor VLC system using a line of sight (LoS) and non-line of sight (NLoS) propagation model using direct detection has been designed. The channel impulse response and received power for LoS and NLoS systems are determined. The received power analysis has been carried out for different scenarios such as (i) single transmitter and single receiver in both LoS and NLoS systems, (ii) single transmitter and receiver in a hybrid (LoS and NLoS) channel condition where the power of LED has been split equally between LoS and NLoS paths, (iii) single transmitter and receiver in a hybrid system where the power of LED has been split unequally in LoS and NLoS paths, (iv) single transmitter and single receiver under four NLoS paths to show multiple reflections in the system, (v) two transmitters and single receiver in both LoS and NLoS paths, (vi) two transmitters and single receiver in a hybrid channel, (vii) single transmitter and two receivers in both LoS and NLoS channel, and the results are compared with the theoretical value.

Keywords:

Visible light communication, Line of sight, Non-line of sight, Field of view, Received power.

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