Poliak, Juraj und Bischl, Hermann und Matuz, Balazs und Ramírez Molina, Julio César und Ziarko, Marcin Wojciech und Haala, Jens und Baumgärtel, Christian und Gregory, Mark (2024) Erasure correcting codes for high-throughput optical ground-to-satellite links. In: Free-Space Laser Communications XXXVI 2024, 12877. Free-Space Laser Communications XXXVI, 2024-01-30 - 2024-01-31, San Francisco, USA. doi: 10.1117/12.3001403. ISBN 978-151067014-3. ISSN 0277-786X.
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Kurzfassung
Optical satellite links provide increased throughput at a more competitive SWaP compared to radio frequency links. Due to the nature of the light interaction with atmosphere and the limited pointing accuracy, the propagated optical signal suffers from significant variation of the SNR. This causes error bursts in the received bit stream but can also lead to a temporary loss of synchronization causing further loss of data. Since bit rates in optical communications can reach multiple Gbps, millions of bits are affected by these error bursts and dropouts. Therefore, we propose an additional layer of protection, termed erasure coding, which is applied on top of the PHY layer of the communication system. This approach provides time diversity by long erasure code words, so that PHY interleaving can be abstained from. Therefore, optical transceiver and terminal architectures that were not specifically tailored to optical ground-to-satellite links can be reused with this layered approach. The erasure coding scheme corrects packet losses/erasures due to channel impairments, where the packet size and consequently the length of the code consisting of packets as codeword-symbols can be picked in a flexible way. Since only packet erasures need to be corrected, erasure codes show advantages compared to PHY coding schemes in terms of memory utilization and throughput. In this paper, the proposed erasure correction scheme is explained in detail and a performance analysis for typical scintillation channel models of earth-satellite laser communication links is presented. Furthermore, implementation aspects, as well as the encoding and decoding speed are discussed. In perspective, we aim at reaching a throughput in the order of 100 Gbps.
elib-URL des Eintrags: | https://elib.dlr.de/203319/ | ||||||||||||||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Vortrag) | ||||||||||||||||||||||||||||||||||||
Titel: | Erasure correcting codes for high-throughput optical ground-to-satellite links | ||||||||||||||||||||||||||||||||||||
Autoren: |
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Datum: | 12 März 2024 | ||||||||||||||||||||||||||||||||||||
Erschienen in: | Free-Space Laser Communications XXXVI 2024 | ||||||||||||||||||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||||||||||
Band: | 12877 | ||||||||||||||||||||||||||||||||||||
DOI: | 10.1117/12.3001403 | ||||||||||||||||||||||||||||||||||||
Name der Reihe: | Proceedings of SPIE - The International Society for Optical Engineering | ||||||||||||||||||||||||||||||||||||
ISSN: | 0277-786X | ||||||||||||||||||||||||||||||||||||
ISBN: | 978-151067014-3 | ||||||||||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||||||||||
Stichwörter: | Transceivers Receivers Interfaces Field programmable gate arrays Commercial off the shelf technology Design Doppler effect Satellites Systems modeling Error control coding | ||||||||||||||||||||||||||||||||||||
Veranstaltungstitel: | Free-Space Laser Communications XXXVI | ||||||||||||||||||||||||||||||||||||
Veranstaltungsort: | San Francisco, USA | ||||||||||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 30 Januar 2024 | ||||||||||||||||||||||||||||||||||||
Veranstaltungsende: | 31 Januar 2024 | ||||||||||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||||||||||
HGF - Programmthema: | Kommunikation, Navigation, Quantentechnologien | ||||||||||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R KNQ - Kommunikation, Navigation, Quantentechnologie | ||||||||||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Global Connectivity for People and Machines | ||||||||||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Kommunikation und Navigation > Optische Satellitenlinks Institut für Kommunikation und Navigation > Satellitennetze | ||||||||||||||||||||||||||||||||||||
Hinterlegt von: | Poliak, Juraj | ||||||||||||||||||||||||||||||||||||
Hinterlegt am: | 25 Mär 2024 10:46 | ||||||||||||||||||||||||||||||||||||
Letzte Änderung: | 17 Jun 2024 11:41 |
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