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Optically powered 5G WDM fronthaul network with weakly-coupled multicore fiber
Optics Express
|October 12, 2022
Summary
This study introduces an optically powered 5G fronthaul network using multicore fiber to supply power to small cells. This innovative solution addresses the challenges of electrical power supply and deployment costs for fifth-generation wireless networks.
Area of Science:
- Optical Communications
- Wireless Networking
- Fiber Optics
Background:
- Fifth-generation (5G) wireless networks require a significant increase in base stations (BSs) due to reduced coverage.
- The miniaturization and densification of BSs face challenges in electrical power supply and deployment costs.
Purpose of the Study:
- To present an optically powered 5G fronthaul network solution.
- To support co-propagation of energy light and 5G New Radio (NR) signals over weakly-coupled multicore fiber (WC-MCF).
Main Methods:
- Utilized spatial-division-multiplexing (SDM) for energy light and wavelength-division-multiplexing (WDM) for 5G NR signals.
- Employed a 1-km weakly-coupled seven-core fiber (WC-7CF) for signal transmission.
- Distributed 60-W energy light at 1064.8 nm among outer cores and transmitted 9-Gbit/s 5G NR WDM signals over the central core.
Main Results:
- Collected 11.9-W electrical power at the remote node for optically powering small cells.
- Achieved error-vector magnitude (EVM) values between 0.3% and 0.39% for 1.5-Gbit/s 5G NR 64-level quadrature amplitude modulation orthogonal frequency division multiplexing (64QAM-OFDM) signals.
- Demonstrated six optically powered small cells with centralized management and flexible access rates.
Conclusions:
- The proposed optically powered 5G fronthaul network effectively addresses power supply and cost challenges for 5G small cells.
- The system enables efficient power delivery and high-performance data transmission for 5G NR signals.
- This technology supports the deployment of numerous small cells with enhanced management capabilities.
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