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Related Experiment Video

Updated: Aug 25, 2025

Quasi-light Storage for Optical Data Packets

Quasi-light Storage for Optical Data Packets

Published on: February 6, 2014

Resource allocation algorithm of an indoor OFDMA VLC system.

Huili Shi, Ping Wang, Ting Yang

|October 18, 2022

Summary

A new resource management algorithm for indoor visible light communication (VLC) using orthogonal frequency division multiple access (OFDMA) enhances system stability and transmission rates. This OFDMA VLC approach improves stability by over 53% compared to existing methods.

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Last Updated: Aug 25, 2025

Quasi-light Storage for Optical Data Packets

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Transmission of Multiple Signals through an Optical Fiber Using Wavefront Shaping

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Published on: March 20, 2017

Area of Science:

Wireless Communication
Optical Networking
Signal Processing

Background:

Indoor Visible Light Communication (VLC) systems offer high bandwidth potential.
Orthogonal Frequency Division Multiple Access (OFDMA) is a key technology for efficient spectrum utilization.
Resource management is critical for optimizing performance in OFDMA-based VLC networks.

Purpose of the Study:

To propose a novel resource management algorithm for indoor OFDMA VLC systems.
To enhance system stability and maximize data transmission rates.
To improve frequency spectrum efficiency through adaptive modulation.

Main Methods:

Utilized Lyapunov optimization to transform a long-term problem into single timeslot online problems.
Implemented adaptive modulation within the OFDMA scheme.
Developed a subcarrier allocation solution for each user's data queue.

Main Results:

The proposed algorithm ensures transmission rates while significantly improving system stability.
Demonstrated substantial improvements in system stability compared to Best Channel (BC) and Round Robin (RR) algorithms.
Achieved approximately 53.36% and 61.36% stability improvement over BC and RR, respectively, at a mean arrival rate of 7 Kbits/timeslot.

Conclusions:

The developed resource management algorithm offers superior performance for indoor OFDMA VLC systems.
This approach provides a robust solution for enhancing stability and efficiency in VLC networks.
The findings are beneficial for the future design and development of OFDMA VLC systems.