Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber
In this paper we propose multicore fiber (MCF) as the medium to transport the different signals associated with various wireless applications (ranging from access to fronthauling and backhauling) from the baseband unit (BBU) to the cell-site. Using 1 km of a 7-core MCF, we simultaneously transmit fr...
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| Format: | Article |
| Language: | English |
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IEEE
2020-01-01
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| Series: | IEEE Access |
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| Online Access: | https://ieeexplore.ieee.org/document/9160928/ |
| _version_ | 1818876579582836736 |
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| author | Luis Gonzalez Guerrero Maria Morant Tongyun Li Martyn J. Fice Alwyn J. Seeds Roberto Llorente Ian H. White Richard V. Penty Cyril C. Renaud |
| author_facet | Luis Gonzalez Guerrero Maria Morant Tongyun Li Martyn J. Fice Alwyn J. Seeds Roberto Llorente Ian H. White Richard V. Penty Cyril C. Renaud |
| author_sort | Luis Gonzalez Guerrero |
| collection | DOAJ |
| description | In this paper we propose multicore fiber (MCF) as the medium to transport the different signals associated with various wireless applications (ranging from access to fronthauling and backhauling) from the baseband unit (BBU) to the cell-site. Using 1 km of a 7-core MCF, we simultaneously transmit fronthaul and backhaul signals from the BBU to the cell site, where they are converted to carrier frequencies in the mm-wave and sub-THz band, respectively. The backhaul is evaluated with a 12.5 GBd 16-quadrature amplitude modulation (QAM) signal, whereas the fronthaul is evaluated with a 7 Gbit/s on-off keying (OOK) signal carrying 14 LTE-compatible channels. The fronthaul signal is generated with a novel compression technique that achieves an efficiency 3-times higher than the one obtained with the common public radio interface (CPRI) protocol. Optical heterodyning is implemented at the cell site for optical-to-RF conversion. The local oscillator (LO) signal required for optical heterodyning is transmitted in a dedicated core, reducing the system complexity and enabling its straight-forward reuse for uplink (UL) transmission. The experimental demonstration includes the simultaneous full-duplex transmission of both the fronthaul and backhaul signals, using 6 cores of the MCF at the same time and achieving a gross data rate of 57 Gbit/s. |
| first_indexed | 2024-12-19T13:44:38Z |
| format | Article |
| id | doaj.art-a1385e927d1b496da12ffb7b6a4c5907 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-19T13:44:38Z |
| publishDate | 2020-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-a1385e927d1b496da12ffb7b6a4c59072022-12-21T20:18:54ZengIEEEIEEE Access2169-35362020-01-01814691514692210.1109/ACCESS.2020.30147029160928Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore FiberLuis Gonzalez Guerrero0https://orcid.org/0000-0003-2809-788XMaria Morant1https://orcid.org/0000-0001-5565-7788Tongyun Li2https://orcid.org/0000-0003-4042-0328Martyn J. Fice3https://orcid.org/0000-0002-8814-2315Alwyn J. Seeds4https://orcid.org/0000-0002-5228-627XRoberto Llorente5https://orcid.org/0000-0003-4799-2564Ian H. White6https://orcid.org/0000-0002-7368-0305Richard V. Penty7https://orcid.org/0000-0003-4605-1455Cyril C. Renaud8https://orcid.org/0000-0002-4457-5741Department of Electronic and Electrical Engineering, University College London, London, U.K.Nanophotonics Technology Center, Universitat Politècnica de València, Valencia, SpainUniversity of Bath, Bath, U.K.Department of Electronic and Electrical Engineering, University College London, London, U.K.Department of Electronic and Electrical Engineering, University College London, London, U.K.Nanophotonics Technology Center, Universitat Politècnica de València, Valencia, SpainUniversity of Bath, Bath, U.K.Department of Engineering, Electrical Division, Centre for Photonic Systems, University of Cambridge, Cambridge, U.K.Department of Electronic and Electrical Engineering, University College London, London, U.K.In this paper we propose multicore fiber (MCF) as the medium to transport the different signals associated with various wireless applications (ranging from access to fronthauling and backhauling) from the baseband unit (BBU) to the cell-site. Using 1 km of a 7-core MCF, we simultaneously transmit fronthaul and backhaul signals from the BBU to the cell site, where they are converted to carrier frequencies in the mm-wave and sub-THz band, respectively. The backhaul is evaluated with a 12.5 GBd 16-quadrature amplitude modulation (QAM) signal, whereas the fronthaul is evaluated with a 7 Gbit/s on-off keying (OOK) signal carrying 14 LTE-compatible channels. The fronthaul signal is generated with a novel compression technique that achieves an efficiency 3-times higher than the one obtained with the common public radio interface (CPRI) protocol. Optical heterodyning is implemented at the cell site for optical-to-RF conversion. The local oscillator (LO) signal required for optical heterodyning is transmitted in a dedicated core, reducing the system complexity and enabling its straight-forward reuse for uplink (UL) transmission. The experimental demonstration includes the simultaneous full-duplex transmission of both the fronthaul and backhaul signals, using 6 cores of the MCF at the same time and achieving a gross data rate of 57 Gbit/s.https://ieeexplore.ieee.org/document/9160928/Backhaulcentralized-radio access network (C-RAN)fronthaulmm-wave communicationsmulticore fiber (MCF)optical communications |
| spellingShingle | Luis Gonzalez Guerrero Maria Morant Tongyun Li Martyn J. Fice Alwyn J. Seeds Roberto Llorente Ian H. White Richard V. Penty Cyril C. Renaud Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber IEEE Access Backhaul centralized-radio access network (C-RAN) fronthaul mm-wave communications multicore fiber (MCF) optical communications |
| title | Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber |
| title_full | Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber |
| title_fullStr | Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber |
| title_full_unstemmed | Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber |
| title_short | Integrated Wireless-Optical Backhaul and Fronthaul Provision Through Multicore Fiber |
| title_sort | integrated wireless optical backhaul and fronthaul provision through multicore fiber |
| topic | Backhaul centralized-radio access network (C-RAN) fronthaul mm-wave communications multicore fiber (MCF) optical communications |
| url | https://ieeexplore.ieee.org/document/9160928/ |
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