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Proceedings Paper • Open Access

Hybrid ARQ communications for severely degraded Hermite-Gaussian FSO link
Author(s): Kamran Kiasaleh

Paper Abstract

In this paper, the potential of hybrid automatic-repeat request (HARQ) algorithm in enhancing the performance of a free- space optical (FSO) communication system, which is impaired by weak turbulence and non-negligible residual pointing error, is explored. In particular, the FSO system is assumed to use orthogonal Hermite-Gaussian (HG) beam patterns to exploit spatial multiplexing of optical radiation. Furthermore, it is assumed that a direct-detection mechanism is utilized at the receiver and that the optical radiation is modulated using pulse-position modulation (PPM). Via analytical results and numerical analysis, it is demonstrated that HARQ not only overcomes the impact of spatial error, but also offers a means of achieving near error free communications provided that the delay associate with HARQ can be tolerated. In general, HARQ offers several orders of magnitude improvement in performance.

Paper Details

Date Published: 25 September 2017
PDF: 8 pages
Proc. SPIE 10562, International Conference on Space Optics — ICSO 2016, 105622R (25 September 2017); doi: 10.1117/12.2296242
Show Author Affiliations
Kamran Kiasaleh, The Univ. of Texas at Dallas (United States)

Published in SPIE Proceedings Vol. 10562:
International Conference on Space Optics — ICSO 2016
Bruno Cugny; Nikos Karafolas; Zoran Sodnik, Editor(s)

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