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Demonstration of a hybrid optical fibera??wireless 5G fronthaul coexisting with end-to-end 4G networks
摘要： The plethora of services envisaged to support 5G use-cases requires the development of a radio access network (RAN) infrastructure with the capability to integrate a variety of user-demanded mobile traffic characteristics. It is therefore interesting to study a 5G deployment scenario showcasing heterogeneous transmission. In order to address this challenge, in this paper, we propose and experimentally assess a coarse-wavelength-division-multiplexing-compatible optical access network for joint provisioning of 4G/5G RAN services, supporting the coexistence of both digital and analog radio-over-fiber (ARoF) fronthauling. Resorting to an integrated testbed, we demonstrate the transport of 100 MHz 5G downlink using low-latency and bandwidth-efficient ARoF over 8 km fiber, seamlessly coexisting on the same fronthaul infrastructure with a legacy full-fledged 4G long-term evolution (LTE) network supported by Ethernet-based digital RoF with different functional splits. In addition, we experimentally demonstrate the successful operation of the 4G/5G system in a hybrid fiber–wireless scenario including a free-space optics fronthaul extension with 55 m. The proposed heterogeneous RAN architecture is demonstrated to provide a flexible and robust integration path for novel 5G technologies, enabling their coexistence with currently deployed 4G LTE systems over a shared fronthaul infrastructure.
关键词： free-space optics,fronthaul,radio access network,5G,4G LTE,digital radio-over-fiber,analog radio-over-fiber
更新于2025-09-19 17:13:59
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[IEEE 2019 International Workshop on Fiber Optics in Access Networks (FOAN) - Sarajevo, Bosnia and Herzegovina (2019.9.2-2019.9.4)] 2019 International Workshop on Fiber Optics in Access Networks (FOAN) - Integrated Photonic Filters for Flexible Analog-based Mobile Fronthauling
摘要： A Wavelength Division Multiplexing (WDM)-enabled analog mobile fronthaul architecture is presented supporting enhanced flexibility by exploiting the fine filtering properties of a fully reconfigurable, silicon photonics-based filtering element. The use of Photonic Integrated Circuit (PIC)-based elastic optical circuitries to support wavelength selectivity, reconfigurability and advanced signal processing at the optical edge is thoroughly discussed. Numerical studies are presented emphasizing on flexibility, low-energy consumption and the compatibility of our proposed PIC-based implementations with the analog Radio over Fiber (RoF)-based mobile transport schemes. Proof-of-concept analog photonic processing of 1 Gbaud Quadrature Phase Shift Keying (QPSK)- modulated radio through Intermediate Frequency over Fiber (IFoF) transmission experiments is successfully demonstrated.
关键词： analog optical signal processing,optical filters,silicon photonics,Analog radio-over-fiber,mobile fronthaul,wavelength division multiplexing,M-QAM
更新于2025-09-16 10:30:52
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[IEEE 2019 International Topical Meeting on Microwave Photonics (MWP) - Ottawa, ON, Canada (2019.10.7-2019.10.10)] 2019 International Topical Meeting on Microwave Photonics (MWP) - Fiber Wireless A-RoF/IFoF Uplink of 0.4Gb/s 16-QAM and 0.6Gb/s QPSK Over a 32-Element 60GHz Phased Array Antenna for 5G Fronthaul Networks
摘要： We experimentally demonstrate an end-to-end Fiber Wireless A-RoF/IFoF fronthaul link using a 32-element 60GHz phased array antenna and characterize for the first time its linearity using two tone measurements, resulting in an 100Mbd uplink transmission of a 16-QAM signal and a 300Mdb QPSK with beamsteering of 15o degrees across 1km fiber and 1m V-band link, meeting the uplink user-rate KPI-requirements for 5G mmWave networks.
关键词： 5G,Two Tone Measurements,Analog Radio-over-Fiber,Mobile Fronthaul
更新于2025-09-16 10:30:52