  The abstract discusses the significance of Visible Light Communication (VLC)
as an efficient and cost-effective solution in the era of green technology. VLC
not only provides illumination but also high-speed data transmission through
existing infrastructure, making it ideal for indoor positioning systems (IPS)
with minimal interference with the Radio Frequency (RF) spectrum and enhanced
security. While previous research has mainly focused on positioning accuracy,
this paper delves into the performance evaluation of a VLC-based indoor system.
The study examines key performance parameters, namely Signal-to-Noise Ratio
(SNR) and path loss, in a Line of Sight (LOS) scenario. It employs a single LED
and ten different photodiode (PD) locations in a 3D room. MATLAB simulations
demonstrate the system's effectiveness, achieving a good SNR with low path
loss. Additionally, the research highlights the importance of optimizing the
PD's position to maximize signal strength while minimizing noise and losses.
