Experimental Demonstration of Extended 5G Digital Fronthaul Over a Partially-Disaggregated WDM/SDM Network

Experimental Demonstration of Extended 5G Digital Fronthaul Over a Partially-Disaggregated WDM/SDM Network

We experimentally demonstrate a 5G digital fronthaul network that relies on multi-adaptive bandwidth/bitrate variable transceivers (BVTs) and an autonomic software-defined networking (SDN) control system for partially-disaggregated wavelength division multiplexing (WDM)/space division multiplexing (...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications Vol. 39; no. 9; pp. 2804 - 2815
Main Authors: Fabrega, Josep M., Munoz, Raul, Nadal, Laia, Manso, Carlos, Moreolo, Michela Svaluto, Vilalta, Ricard, Martinez, Ricardo, Vilchez, Francico Javier, Galacho, Diego Perez, Sales, Salvador, Grivas, Evangelos, Turkiewicz, Jaroslaw P., Rommel, Simon, Monroy, Idelfonso Tafur
Format: Journal Article
Language:English
Published: New York IEEE 01-09-2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects:
Adaptive control
Bandwidth
Computer networks
Constellations
Data transmission
Digitization
Fronthaul
OFDM
Optical network units
optical networks
Optical sensors
Optical signal processing
optical transmission
Orthogonal Frequency Division Multiplexing
Passive optical networks
Radio signals
Radio transmission
SDM
SDN
Signal to noise ratio
Software-defined networking
Transceivers
Wave division multiplexing
Waveguides
Wavelength division multiplexing
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Summary:We experimentally demonstrate a 5G digital fronthaul network that relies on multi-adaptive bandwidth/bitrate variable transceivers (BVTs) and an autonomic software-defined networking (SDN) control system for partially-disaggregated wavelength division multiplexing (WDM)/space division multiplexing (SDM). Transmission of 256-QAM 760.32 MHz orthogonal frequency-division multiplexing (OFDM) radio signal is performed, with a total radio transmission capacity of 5.667 Gb/s. Digitized signal samples are carried as a 22.25 Gb/s digitized radio-over-fiber (DRoF) data stream and transmitted over a WDM/SDM infrastructure including 40-wavelength 100-GHz arrayed waveguide gratings (AWGs) and 19-core fiber. The autonomic SDN controller deploys a control loop for the multi-adaptive OFDM-based BVTs that monitors the per-subcarrier signal to noise ratio (SNR) and assigns the optimal constellation based on the actual signal degradation. An error vector magnitude (EVM) below the targeted 2.1% is achieved while setting up connections in less than 5 s.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2021.3064645