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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Optically powered FiWi system for B5G hybrid VLC/RF access networks.

Felipe B F Pinto, Leticia C Souza, Tomás P V Andrade

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    |November 22, 2024
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    Summary

    This study introduces a novel optically powered fiber/wireless (FiWi) system for beyond 5G (B5G) networks, integrating visible light communication (VLC) and radio frequency (RF) access. Power-over-fiber technology successfully powers both VLC and RF components, demonstrating efficient B5G indoor communication.

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    Area of Science:

    • Optical Communications
    • Wireless Networking
    • Beyond 5G (B5G) Technologies

    Background:

    • Traditional power delivery for indoor wireless networks faces challenges in flexibility and integration.
    • Emerging beyond 5G (B5G) systems require innovative solutions for seamless fiber and wireless convergence.
    • Visible Light Communication (VLC) and Radio Frequency (RF) networks offer complementary approaches for high-speed indoor data transmission.

    Purpose of the Study:

    • To propose and demonstrate an optically powered Fiber/Wireless (FiWi) system for B5G indoor applications.
    • To integrate Power-over-Fiber (PoF) technology for simultaneous remote powering of VLC and RF components.
    • To evaluate the communication performance of the hybrid VLC/RF access network powered by PoF.

    Main Methods:

    • A hybrid FiWi system combining VLC and RF access networks was designed.
    • Power-over-Fiber (PoF) technology was employed to deliver optical power over 500 m of multimode fiber (MMF).
    • A 5G New Radio (5G NR) signal was transmitted via Radio-over-Fiber (RoF) fronthaul and then distributed through the hybrid VLC/RF network.

    Main Results:

    • The PoF system successfully transmitted 8.1 W of optical power with 14% efficiency, powering a red laser for VLC and an RF module.
    • The VLC link achieved 1.2 Gbps throughput with 200 MHz bandwidth and 64-QAM, showing an EVMRMS of 4.02%.
    • The RF link at 3.5 GHz delivered 360 Mbps with an EVMRMS of 2.67%.

    Conclusions:

    • The proposed optically powered FiWi system is a viable solution for B5G indoor applications.
    • Power-over-Fiber technology effectively powers hybrid VLC and RF access networks.
    • The system demonstrates robust performance for both VLC and RF communication links, validated against conventional power supplies.