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Erschienen in: Optical and Quantum Electronics 13/2023

01.12.2023

Performance evaluation of UAV-assisted FSO link in generalized Malaga distributed atmospheric turbulence conditions

verfasst von: Shivaji Sinha, Chakresh Kumar

Erschienen in: Optical and Quantum Electronics | Ausgabe 13/2023

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Abstract

An unmanned aerial vehicle (UAV)-assisted free-space optical communication (FSO) system has recently played a significant role in increasing optical wireless connectivity across several hovering UAV nodes while minimizing overall infrastructure costs. However, atmospheric turbulence-induced fading, geometric loss, and pointing errors (PEs) have a major negative impact on the received signal quality at the hovering FSO platform. This research paper provides a more reliable and simple architecture between the ground station terminal and a hovering UAV platform to alleviate these channel limitations, especially misalignment issues. The optical terminal is designed by selecting the optimal values for the receiver aperture diameter, beam waist size, angle of arrival (AoA), and, avalanche photo detector (APD) receiver gain. The system incorporates a direct detection scheme and an APD receiver structure to combat the combined effects of atmospheric turbulence and the hovering UAV. Moreover, the average symbol error rate (SER), and ergodic capacity are derived considering the combined G2U and U2G links for the four different losses: link loss, atmospheric turbulence considering generalized Malaga distribution, PEs and AOA, respectively. The proposed system performance is investigated for a link length of 0.250 km under weak to strong turbulence conditions. The result clearly depicts the best SER performance for an APD gain range of 14 \(\le G\le\) 24, to mitigate the UAV's fluctuations, and the optimum AoA range between 5 \(\le {\theta }_{FoV}\le\) 10 mrad for \({\sigma }_{a}\)= 3.8 mrad, 7.6 mrad, and 8.5 mrad respectively.

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Literatur
Zurück zum Zitat Carrasco-Casado, A., Vergaz, R., Sánchez-Pena, J.M.: In-axis reception by polarization discrimination in a modulating-retroreflector-based free-space optical communication link. Microw. Opt. Technol. Lett.. Opt. Technol. Lett. 54(11), 2520–2522 (2012). https://doi.org/10.1002/mop.27116CrossRef Carrasco-Casado, A., Vergaz, R., Sánchez-Pena, J.M.: In-axis reception by polarization discrimination in a modulating-retroreflector-based free-space optical communication link. Microw. Opt. Technol. Lett.. Opt. Technol. Lett. 54(11), 2520–2522 (2012). https://​doi.​org/​10.​1002/​mop.​27116CrossRef
Zurück zum Zitat Gradshteyn, I.S., Ryzhik, I.M.: Table of integrals, series, and products, 7th edn. Kluwer, Norwell (2007)MATH Gradshteyn, I.S., Ryzhik, I.M.: Table of integrals, series, and products, 7th edn. Kluwer, Norwell (2007)MATH
Zurück zum Zitat Trung, H.D., Tuan, D.T.: Performance of free-space optical communications using SC-QAM signals over strong atmospheric turbulence and pointing errors. In: 2014 IEEE Fifth International Conference on Communications and Electronics (ICCE) [Preprint] (2014). https://doi.org/10.1109/cce.2014.6916677. Trung, H.D., Tuan, D.T.: Performance of free-space optical communications using SC-QAM signals over strong atmospheric turbulence and pointing errors. In: 2014 IEEE Fifth International Conference on Communications and Electronics (ICCE) [Preprint] (2014). https://​doi.​org/​10.​1109/​cce.​2014.​6916677.
Metadaten
Titel
Performance evaluation of UAV-assisted FSO link in generalized Malaga distributed atmospheric turbulence conditions
verfasst von
Shivaji Sinha
Chakresh Kumar
Publikationsdatum
01.12.2023
Verlag
Springer US
Erschienen in
Optical and Quantum Electronics / Ausgabe 13/2023
Print ISSN: 0306-8919
Elektronische ISSN: 1572-817X
DOI
https://doi.org/10.1007/s11082-023-05417-0

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