Enhancing Vlc Performance: An Experimental Study on System Parameter Tuning

Paper in proceeding, 2025

This research presents a comprehensive experimental and simulation-based investigation aimed at enhancing the link distance and performance of indoor Visible Light Communication (VLC) systems. A basic VLC setup was incrementally improved by optimizing key system parameters, including LED transmit power, transimpedance amplifier (TIA) feedback resistor, lens configuration, photodiode selection, and wall color. Each enhancement was experimentally validated, and corresponding simulations were conducted to analyze system behavior and verify measurement results. The study also examines the applicability of well-established VLC channel models, such as the Masao Nakagawa model and second-reflection models, in real-world scenarios. The findings confirm that incorporating optical and environmental optimizations can significantly extend link distance, up to 3 m with high accuracy, while aligning closely with simulation predictions. This work not only validates theoretical models but also provides practical design insights for reliable, long-range VLC deployment in indoor environments. The results demonstrate the importance of iterative experimental tuning in bridging the gap between theoretical assumptions and actual VLC system performance.