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Relative impact of channel symbol rate on transmission capacity

Gerard, T; Galdino, L; Semrau, D; Sillekens, E; Edwards, A; Pelouch, W; Barnes, S; ... Bayvel, P; + view all (2020) Relative impact of channel symbol rate on transmission capacity. Journal of Optical Communications and Networking , 12 (4) B1-B8. 10.1364/JOCN.12.0000B1. Green open access

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Abstract

Through C+L band transmission experiments and theoretical modeling, we investigate the impact of channel symbol rate (30, 40, 60, and 85 GBd) on the performance of data center interconnection, metropolitan, and core network distances. Two different transponder architectures are investigated: (a) single-carrier receiver and (b) multi-carrier receiver, where multiple subcarriers are received together in a single wideband receiver. The architectures of both receivers experience a reduction in the achievable information rate as the channel symbol rate increases due to dominating transceiver noise; this holds over all tested transmission distances. However, the multi-carrier receiver shows a weaker performance dependency on symbol rate, as receiver-related impairments dominate. When testing the single-carrier receiver after 630 km, we find that by increasing the channel symbol rate from 40 to 85 GBd, gross capacity decreases by 16%; however, the required number of transceivers to fill the transmission window decreases by 52%. Using the multi-carrier receiver reduces receiver count further. This potentially impacts the cost and complexity of deploying fully loaded transmission systems.

Type: Article
Title: Relative impact of channel symbol rate on transmission capacity
Open access status: An open access version is available from UCL Discovery
DOI: 10.1364/JOCN.12.0000B1
Publisher version: https://doi.org/10.1364/JOCN.12.0000B1
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10092001
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