Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links
Fiber-wireless-Fiber links require alignment between the transmitter and receiver to a high degree of precision (typically ~ 0.01° for a link of a few meters), and channel coding can be used for mitigating the link margin reduction caused by the limited precision of the beam-st...
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doaj-9bc57f3a64a04239ad0d6a7ba920331c2021-08-23T23:00:36ZengIEEEIEEE Access2169-35362021-01-01911272611273210.1109/ACCESS.2021.31033179509027Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical LinksXiaoyu Zhang0https://orcid.org/0000-0002-0793-889XRavinder Singh1https://orcid.org/0000-0002-2646-4204James Farmer2https://orcid.org/0000-0003-0099-7958Grahame Faulkner3https://orcid.org/0000-0002-2965-2825Dominic O'brien4https://orcid.org/0000-0001-7185-0676Periklis Petropoulos5https://orcid.org/0000-0002-1576-8034Lajos Hanzo6https://orcid.org/0000-0002-2636-5214School of Electronics and Computer Science, University of Southampton, Southampton, U.K.Department of Engineering Science, University of Oxford, Oxford, U.K.Department of Engineering Science, University of Oxford, Oxford, U.K.Department of Engineering Science, University of Oxford, Oxford, U.K.Department of Engineering Science, University of Oxford, Oxford, U.K.Optoelectronics Research Centre, University of Southampton, Southampton, U.K.School of Electronics and Computer Science, University of Southampton, Southampton, U.K.Fiber-wireless-Fiber links require alignment between the transmitter and receiver to a high degree of precision (typically ~ 0.01° for a link of a few meters), and channel coding can be used for mitigating the link margin reduction caused by the limited precision of the beam-steering and tracking system. This paper reports results from an experimental study of the misalignment tolerance attained by channel coding. Explicitly, the received power penalties imposed by misalignment are characterized, and then forward error correction techniques are adopted for mitigating the performance degradation inflicted, which is quantified experimentally. Our results characterize trade-offs between coding rate, decoding complexity and the degree of misalignment. Overall, an improvement of the tolerance to misalignment up to ~50% was attained for coded links compared with the uncoded counterpart.https://ieeexplore.ieee.org/document/9509027/Optical wireless communicationsfiber-wireless-fiberforward error correctionlink misalignmentbeam-steeringtracking |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xiaoyu Zhang Ravinder Singh James Farmer Grahame Faulkner Dominic O'brien Periklis Petropoulos Lajos Hanzo |
spellingShingle |
Xiaoyu Zhang Ravinder Singh James Farmer Grahame Faulkner Dominic O'brien Periklis Petropoulos Lajos Hanzo Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links IEEE Access Optical wireless communications fiber-wireless-fiber forward error correction link misalignment beam-steering tracking |
author_facet |
Xiaoyu Zhang Ravinder Singh James Farmer Grahame Faulkner Dominic O'brien Periklis Petropoulos Lajos Hanzo |
author_sort |
Xiaoyu Zhang |
title |
Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links |
title_short |
Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links |
title_full |
Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links |
title_fullStr |
Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links |
title_full_unstemmed |
Experimental Characterization of Turbo-Coded 20 Gbps Fiber-Wireless-Fiber Optical Links |
title_sort |
experimental characterization of turbo-coded 20 gbps fiber-wireless-fiber optical links |
publisher |
IEEE |
series |
IEEE Access |
issn |
2169-3536 |
publishDate |
2021-01-01 |
description |
Fiber-wireless-Fiber links require alignment between the transmitter and receiver to a high degree of precision (typically ~ 0.01° for a link of a few meters), and channel coding can be used for mitigating the link margin reduction caused by the limited precision of the beam-steering and tracking system. This paper reports results from an experimental study of the misalignment tolerance attained by channel coding. Explicitly, the received power penalties imposed by misalignment are characterized, and then forward error correction techniques are adopted for mitigating the performance degradation inflicted, which is quantified experimentally. Our results characterize trade-offs between coding rate, decoding complexity and the degree of misalignment. Overall, an improvement of the tolerance to misalignment up to ~50% was attained for coded links compared with the uncoded counterpart. |
topic |
Optical wireless communications fiber-wireless-fiber forward error correction link misalignment beam-steering tracking |
url |
https://ieeexplore.ieee.org/document/9509027/ |
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