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Simultaneously Capturing Real-time Images in Two Emission Channels Using a Dual Camera Emission Splitting System: Applications to Cell Adhesion

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Inter-cell interference mitigation in multi-cellular visible light communications.

Sun-Young Jung, Do-Hoon Kwon, Se-Hoon Yang

|May 4, 2016

Summary

Filter bank-based multicarrier (FBMC) effectively mitigates inter-cell interference in optical wireless communications, improving capacity and spectral efficiency. This novel cell partitioning scheme enhances visible light communication for localization services.

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Area of Science:

Optical Wireless Communications
Signal Processing

Background:

Inter-cell interference is a major challenge in multi-cellular optical wireless communication systems.
Existing methods like Orthogonal Frequency Division Multiplexing-based Multiple Access (OFDMA) are inefficient in optical systems due to interference, especially with asynchronous signals.

Purpose of the Study:

To propose and experimentally demonstrate a novel multicarrier-based cell partitioning scheme to mitigate inter-cell interference in optical wireless communications.
To enhance capacity and spectral efficiency for visible light communication (VLC) applications.

Main Methods:

Implemented a multicarrier-based cell partitioning scheme combined with frequency reuse.
Employed Orthogonal Frequency Division Multiplexing-based Multiple Access (OFDMA) for cell partitioning.
Utilized Filter Bank-based Multicarrier (FBMC) to mitigate inter-cell interference caused by asynchronous signals.

Main Results:

FBMC-based cell partitioning effectively mitigated inter-cell interference compared to OFDMA.
Achieved approximately 1.5 times improvement in capacity and spectral efficiency using FBMC.
Demonstrated FBMC's advantage in scenarios with large RF path differences and numerous neighboring cells.

Conclusions:

The proposed multicarrier-based cell partitioning with FBMC is a robust solution for optical wireless communications.
This scheme significantly improves performance and supports Visible Light Communication (VLC)-based localization services and indoor positioning systems.