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Updated: Feb 13, 2026
09:11
Revealing Neural Circuit Topography in Multi-Color
Published on: November 14, 2011
15.5K
Resource allocation in a multi-color DS-OCDMA VLC cellular architecture.
Optics Express
|March 14, 2018
Summary
This study introduces two resource allocation methods for visible light communication networks. One maximizes network data rates, while the other ensures user fairness using optical code division multiple access.
Area of Science:
- Wireless Communication
- Optical Networks
- Signal Processing
Background:
- Visible light communication (VLC) networks offer high bandwidth potential.
- Overlapping coverage areas from multiple access points present resource allocation challenges.
- Optical code division multiple access (OCDMA) is a key enabling technology for VLC.
Purpose of the Study:
- To propose and evaluate two novel resource allocation techniques for VLC networks with overlapping coverage.
- To address both network-wide rate maximization and individual user rate fairness.
- To analyze system performance using OCDMA principles for code assignment.
Main Methods:
- Developed a rate maximization resource allocation technique with minimum and maximum rate constraints.
- Designed a fairness-oriented resource allocation technique for equitable user access.
- Employed optical code division multiple access (OCDMA) for resource (code) assignment.
- Conducted simulations to evaluate system performance metrics.
Main Results:
- Achievable data rates were analyzed for both proposed techniques.
- Outage probability was assessed under different allocation strategies.
- The percentage of users successfully accessing the network was determined.
- Simulation results demonstrated the trade-offs between rate maximization and fairness.
Conclusions:
- Both presented resource allocation techniques are viable for visible light communication networks.
- The choice between rate maximization and fairness depends on specific network objectives.
- OCDMA-based code allocation effectively manages resources in overlapping VLC coverage areas.
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