University of Hertfordshire

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Original languageEnglish
Number of pages14
Pages (from-to)335-348
JournalPhotonic Network Communications
Journal publication date3 May 2019
Volume37
Issue3
Early online date3 May 2019
DOIs
Publication statusE-pub ahead of print - 3 May 2019

Abstract

This paper presents a novel co-existence of multiple Fifth-Generation (5G) services employing Orthogonal Frequency Division Multiplexing (OFDM) and Filter Bank Multicarrier (FBMC) waveforms in a resilient photonic Millimeter-wave (mmWave) mobile fronthaul architecture. The 5G services are delivered to the remote antenna using shared optical infrastructure and simultaneously upconverted to mmWave frequencies using only one optical local oscillator (LO) for heterodyne upconversion. Radio-over-fiber technology is employed for cloud-radio access network, in which the optical LO used for mmWave upconversion can be placed either at the remote radio head shared by both downlink and uplink signals or remotely delivered from the central office. In addition, the proposed architecture supports the integration of wavelength division multiplexing technology, which enables seamless scalability and management of the photonic infrastructure. As multiple lasers beat to generate the mmWave signals, laser phase noise becomes the dominant system impairment, degrading the detection performance. In order to mitigate the effect, frequency averaging technique is applied to enhance the channel estimation. The comprehensive analysis of different transmission scenarios using industry standard VPI Transmission Maker ® simulation platform has demonstrated successful co-existence and transmission of OFDM and FBMC 5G services simultaneously upconverted to 28 GHz, 38 GHz and 60 GHz mmWave signals after 40 km fiber and 2 m wireless. Compared with FBMC, OFDM exhibits better resilience to phase noise with better Error Vector Magnitude (EVM) values at low received powers, but with the application of intra-symbol frequency-domain averaging, the EVM performance of FBMC is comparable to OFDM.

Notes

© Springer Science+Business Media, LLC, part of Springer Nature 2019

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