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    Area of Science:

    • Wireless communication systems
    • Biomedical engineering
    • Optical networking

    Background:

    • Wireless body area networks (WBANs) are crucial for remote patient monitoring.
    • Visible light communication (VLC) offers an efficient solution for medical WBANs, particularly for external links.
    • Minimizing symbol error rates (SERs) is critical for reliable medical data transmission.

    Purpose of the Study:

    • To propose a joint power and subcarrier allocation scheme for VLC systems in medical WBANs.
    • To minimize SERs under transmit power limitations and user rate requirements.
    • To evaluate the impact of channel conditions and novel communication strategies on system performance.

    Main Methods:

    • Developed a joint power and subcarrier allocation scheme for VLC systems.
    • Utilized an improved channel model incorporating received signal power dependent noise (RSN).
    • Assessed the influence of receiver tilting and wall-mounted mirrors (for LoS and NLoS) on resource allocation.

    Main Results:

    • RSN and receiver tilting significantly impact resource allocation strategies.
    • The proposed scheme effectively minimizes SERs in medical WBANs.
    • Utilizing NLoS links with wall-mounted mirrors can reduce outage probability to near zero.

    Conclusions:

    • The proposed resource allocation scheme enhances the reliability of VLC-based medical WBANs.
    • Wall-mounted mirrors are a viable solution for maintaining communication robustness against movement and obstructions.
    • VLC technology, with strategic resource management, shows great promise for future healthcare applications.