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Lamp location optimization for achievable rate maximization in visible light communication.

Fubin Wang, Fang Yang, Jian Song

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    Optimizing light-emitting diode (LED) lamp locations enhances indoor visible light communication (VLC) rates. This study introduces a computationally efficient method for maximizing average achievable rates in VLC systems.

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    Area of Science:

    • Optics and photonics
    • Wireless communication
    • Computer engineering

    Background:

    • Visible light communication (VLC) is a promising indoor wireless technology.
    • Limited research exists on optimizing light-emitting diode (LED) lamp placement for VLC performance.
    • Understanding the impact of lamp location on achievable data rates is crucial for practical VLC deployment.

    Purpose of the Study:

    • To optimize the location of LED lamps for maximizing the average achievable rate in indoor VLC systems.
    • To develop a computationally efficient method for calculating achievable rates and optimizing lamp placement.
    • To investigate the relationship between room dimensions, the number of lamps, and optimal lamp distribution.

    Main Methods:

    • Utilized the Adam optimization algorithm to determine optimal LED lamp locations.
    • Employed a sub-sampling based Monte Carlo method to reduce computational complexity.
    • Analyzed the impact of varying room sizes and lamp quantities on system performance.

    Main Results:

    • Successfully optimized LED lamp locations to maximize average achievable rates.
    • Demonstrated significant reduction in computational complexity using the proposed Monte Carlo method.
    • Illustrated optimal lamp distributions for different room sizes and numbers of lamps.

    Conclusions:

    • LED lamp location is a critical factor in achieving high data rates for indoor VLC.
    • The proposed optimization and Monte Carlo method offer an efficient approach for practical VLC system design.
    • Optimal lamp placement strategies are dependent on room geometry and system configuration.