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Model and Methodology to Characterize Phosphor-Based White LED Visible Light Communication Links.

Pau Salvador¹, Vicenç Almenar¹, Juan Luis Corral²

¹Instituto de Telecomunicaciones y Aplicaciones Multimedia, Universitat Politècnica de València, 46022 Valencia, Spain.

Sensors (Basel, Switzerland)

|July 11, 2023

Summary

This study models visible light communication (VLC) systems using phosphor-based white LEDs. The simulation accurately predicts data transmission performance, validating LEDs for future wireless networks.

Keywords:

VLC link model white LED

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Area of Science:

Optoelectronics
Optical Communications
Wireless Networking

Background:

LED lighting is energy-efficient and widely deployed.
Visible Light Communications (VLC) leverages LEDs for data transmission.
Phosphor-based white LEDs offer a low-cost VLC solution but have bandwidth limitations.

Purpose of the Study:

To present a simulation model for a VLC link using phosphor-based white LEDs.
To develop a method for characterizing the VLC setup for data transmission experiments.
To validate the simulation model's accuracy against experimental measurements.

Main Methods:

Developed a simulation model incorporating LED frequency response, noise, and channel attenuation.
Included angular misalignment effects in the simulation.
Employed carrierless amplitude phase (CAP) and orthogonal frequency division multiplexing (OFDM) for data transmission validation.

Main Results:

The simulation model accurately reflects the frequency response and noise characteristics of the VLC system.
Simulations showed high agreement with experimental measurements for data transmission.
The model effectively accounts for propagation channel attenuation and angular misalignment.

Conclusions:

The proposed simulation model is suitable for analyzing and predicting the performance of phosphor-based white LED VLC systems.
This work validates the use of LEDs in future high-speed optical wireless communication networks.
The characterization method aids in optimizing VLC link design and performance.