Radio over fiber (RoF) is an empowering technology for the next-generation wireless networks including fifth generation cloud radio access networks. In this paper, we propose a new fronthaul interface which has been demonstrated for a 20-MHz LTE signal having 64-Quadrature amplitude modulation (QAM) modulation over 50 km of standard single-mode fiber. The proposed methodology potentially reduces the overall bandwidth requirement of the link. The performance analysis has been demonstrated for conventional analog RoF (A-RoF) and proposed digital RoF (D-RoF). As a figure of merit, the performance evaluation of the two architectures is reported by analyzing error vector magnitude (EVM), signal-to-noise ratio and eye-opening penalty. It is shown that digital optical links can mitigate the impairments present in A-RoF links and can support the transmission up to 50 km. Moreover, it is shown that efficient D-RoF links can be obtained with a relatively low amount of analog-to–digital-converter resolution bits. For the D-RoF link, the EVM was measured to be less than 2 % at 50 km. This is within the LTE specifications, proving it as a cost and power effective solution for next-generation wireless networks.

Digital Radio Frequency Transport over Optical Fiber for 5G Fronthaul Links / Hadi, Muhammad Usman; Jung, Hyun; Traverso, Pier Andrea; Tartarini, Giovanni. - In: JOURNAL OF OPTICAL COMMUNICATIONS. - ISSN 0173-4911. - ELETTRONICO. - 43:4(2022), pp. 641-647. [10.1515/joc-2019-0051]

Digital Radio Frequency Transport over Optical Fiber for 5G Fronthaul Links

Hadi, Muhammad Usman
Writing – Original Draft Preparation
;
Traverso, Pier Andrea
Conceptualization
;
Tartarini, Giovanni
Supervision
2022

Abstract

Radio over fiber (RoF) is an empowering technology for the next-generation wireless networks including fifth generation cloud radio access networks. In this paper, we propose a new fronthaul interface which has been demonstrated for a 20-MHz LTE signal having 64-Quadrature amplitude modulation (QAM) modulation over 50 km of standard single-mode fiber. The proposed methodology potentially reduces the overall bandwidth requirement of the link. The performance analysis has been demonstrated for conventional analog RoF (A-RoF) and proposed digital RoF (D-RoF). As a figure of merit, the performance evaluation of the two architectures is reported by analyzing error vector magnitude (EVM), signal-to-noise ratio and eye-opening penalty. It is shown that digital optical links can mitigate the impairments present in A-RoF links and can support the transmission up to 50 km. Moreover, it is shown that efficient D-RoF links can be obtained with a relatively low amount of analog-to–digital-converter resolution bits. For the D-RoF link, the EVM was measured to be less than 2 % at 50 km. This is within the LTE specifications, proving it as a cost and power effective solution for next-generation wireless networks.
2022
Digital Radio Frequency Transport over Optical Fiber for 5G Fronthaul Links / Hadi, Muhammad Usman; Jung, Hyun; Traverso, Pier Andrea; Tartarini, Giovanni. - In: JOURNAL OF OPTICAL COMMUNICATIONS. - ISSN 0173-4911. - ELETTRONICO. - 43:4(2022), pp. 641-647. [10.1515/joc-2019-0051]
Hadi, Muhammad Usman; Jung, Hyun; Traverso, Pier Andrea; Tartarini, Giovanni
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/698175
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