Adaptive Transceiver Design for High-capacity Multi-modal Free-space Optical Communications with Commercial Devices and Atmospheric Turbulence

Abstract

In this paper, to achieve higher robustness against atmospheric turbulence for high-capacity free-space optical (FSO) communications, an adaptive multi-modal FSO transceiver has been designed and experimentally demonstrated. We show that based on the dynamically estimated channel state information, modulation formats and power for different transmit modes can be adaptively allocated at the transmitter side. Meanwhile, at the receiver side, we show that the most suitable multi-input/multi-output decoder can be selected and employed to meet the requirement of forward error correction at the minimal expense of power consumption. By employing time-division multiplexed transmitter and receiver emulation and a spatial light modulator for turbulence emulation, an aggregate data rate of 590 Gbit/s/wavelength has been achieved when suffering from strong atmospheric turbulence, verifying the feasibility of the proposed adaptive transceiver over a turbulent FSO link. Moreover, to demonstrate practical applicability, all key devices such as transponder, multiplexer, and demultiplexer are commercially available in this work.

Publication DOI: https://doi.org/10.1109/JLT.2023.3242215
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: Copyright © 2023 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Funding: Research supported by EPSRC under grant number EP/T009047/1, EP/T009012/1, EP/S003436/1, EP/S016171/1, and the European Union’s Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie grant agreement No. 713694.
Uncontrolled Keywords: Atmospheric turbulence,Channel estimation,Equalizers,MIMO communication,Optical receivers,Optical transmitters,Symbols,Transceivers,free-space optics (FSO),mode-division multiplexing (MDM),multiple-input multiple-output (MIMO),optical wireless communication,Atomic and Molecular Physics, and Optics
Publication ISSN: 0733-8724
Last Modified: 28 Feb 2024 08:28
Date Deposited: 13 Feb 2023 12:11
Full Text Link:
Related URLs: https://ieeexpl ... cument/10035962 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2023-06-01
Published Online Date: 2023-02-03
Accepted Date: 2023-02-01
Authors: Hu, Zhouyi (ORCID Profile 0000-0002-8891-6341)
Chen, Zhaozhong
Li, Yiming (ORCID Profile 0000-0002-9442-2591)
Benton, David M. (ORCID Profile 0000-0003-0663-1404)
Ali, Abdallah A. I.
Patel, Mohammed
Lavery, Martin P.j.
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)

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