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Experimental characterization of turbo-coded 20 Gbps fiber-wireless-fiber optical links

Experimental characterization of turbo-coded 20 Gbps fiber-wireless-fiber optical links
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 ~0.01º 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.
Optical wireless communications, beam-steering, dynamic range, fiber-wireless-fiber, forward error correction, link misalignment, tracking
2169-3536
112726-112732
Zhang, Xiaoyu
ea1ec5dd-5b9f-4ba9-b420-c05e771a5ae3
Singh, Ravinder
4f8eac9d-8675-4603-ba25-796eec5f003f
Farmer, James
bae765b0-ed59-4257-ae71-3eaa0d4f00e9
Faulkner, Grahame
a9ebf6e1-84bb-4fd3-a21e-441085a30521
O'Brien, Dominic
4cb2fc57-7219-48fd-b4a9-e6094b12d374
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Xiaoyu
ea1ec5dd-5b9f-4ba9-b420-c05e771a5ae3
Singh, Ravinder
4f8eac9d-8675-4603-ba25-796eec5f003f
Farmer, James
bae765b0-ed59-4257-ae71-3eaa0d4f00e9
Faulkner, Grahame
a9ebf6e1-84bb-4fd3-a21e-441085a30521
O'Brien, Dominic
4cb2fc57-7219-48fd-b4a9-e6094b12d374
Petropoulos, Periklis
522b02cc-9f3f-468e-bca5-e9f58cc9cad7
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhang, Xiaoyu, Singh, Ravinder, Farmer, James, Faulkner, Grahame, O'Brien, Dominic, Petropoulos, Periklis and Hanzo, Lajos (2021) Experimental characterization of turbo-coded 20 Gbps fiber-wireless-fiber optical links. IEEE Access, 9, 112726-112732, [9509027]. (doi:10.1109/ACCESS.2021.3103317).

Record type: Article

Abstract

Fiber-wireless-Fiber links require alignment between the transmitter and receiver to a high degree of precision (typically ~0.01º 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.

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Accepted/In Press date: 4 August 2021
e-pub ahead of print date: 9 August 2021
Keywords: Optical wireless communications, beam-steering, dynamic range, fiber-wireless-fiber, forward error correction, link misalignment, tracking

Identifiers

Local EPrints ID: 450890
URI: http://eprints.soton.ac.uk/id/eprint/450890
ISSN: 2169-3536
PURE UUID: 5fce59bb-bc58-46f3-b865-ae863127f217
ORCID for Xiaoyu Zhang: ORCID iD orcid.org/0000-0002-0793-889X
ORCID for Periklis Petropoulos: ORCID iD orcid.org/0000-0002-1576-8034
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 18 Aug 2021 16:33
Last modified: 26 Nov 2021 03:22

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Contributors

Author: Xiaoyu Zhang ORCID iD
Author: Ravinder Singh
Author: James Farmer
Author: Grahame Faulkner
Author: Dominic O'Brien
Author: Lajos Hanzo ORCID iD

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