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Beam tracking algorithm for marine applications using visible light communication.

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    This study introduces new algorithms for precise transmitter localization and real-time beam tracking in visible light communication (VLC) for marine environments. The methods achieve high accuracy and efficient performance for reliable underwater optical wireless communication.

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    Area of Science:

    • Optical Wireless Communications
    • Underwater Communication Systems
    • Signal Processing

    Background:

    • Visible Light Communication (VLC) is a promising marine communication candidate due to its immunity to electromagnetic interference and wide bandwidth.
    • Reliable beam tracking is essential for green communication links in VLC systems.
    • Existing methods may lack the required accuracy and real-time performance for dynamic marine environments.

    Purpose of the Study:

    • To develop robust algorithms for transmitter localization and online beam tracking in marine VLC systems.
    • To enhance the reliability and accuracy of underwater optical wireless communication.
    • To address the challenges of signal noise and dynamic conditions in marine VLC.

    Main Methods:

    • A geometrical algorithm for transmitter localization based on received signal strength in a single-input-multiple-output (SIMO) system.
    • A linear iterative algorithm employing Taylor expansion, implicit function theorem, and time-domain expansion for online beam tracking.
    • An iterative denoising algorithm utilizing hidden Markov models and principal component analysis for signal enhancement in marine VLC.

    Main Results:

    • The proposed geometrical algorithm accurately localizes transmitters.
    • The iterative beam tracking algorithm demonstrates high precision, achieving accuracy within 10 cm.
    • The denoising algorithm effectively reduces noise in marine VLC signals.
    • The combined algorithms exhibit excellent real-time performance.

    Conclusions:

    • The developed algorithms provide a significant advancement for marine visible light communication systems.
    • High tracking accuracy and real-time capabilities make these methods suitable for practical underwater optical communication.
    • This research contributes to the reliable deployment of green communication technologies in marine environments.