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Cross layer optimisation for adaptive-optics corrected satellite to Ground laser links

Abstract : For future satellite-to-ground communications link, very high throughput might be achievable at a reasonable cost assuming the use of existing single mode components developed for fiber technologies (optical detectors and amplifiers, MUX/DEMUX...). The influence of atmospheric turbulence degrades the injection efficiency of the incoming wave into single mode components. This leads to signal fading and channel impairments. Several mitigation strategies are considered to prevent them. The use of adaptive optics (AO) should contribute to reduce substantially the criticality of the fading at the expense of potentially complex and expensive systems if very high stability of the injection is requested. The use of appropriate numerical mitigation techniques (coding+interleaving) can help to relax the specifications and cost of AO systems but could lead among others to unmanageable buffer size. Thus the specification of AO correction and interleavers/forward error codes should be addressed jointly. A model to evaluate the channel capacity in terms of outage probability and packet error rate has been developed that jointly takes into account partial correction by AO and channel interleaving. It includes the capability to evaluate coded transmission performance over the correlated FSO channel in satellite-to-ground scenarios. This model is presented here and confronted to numerical simulations for several distinct correction cases. The interdependence of AO correction with numerical mitigation techniques is investigated.
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Submitted on : Thursday, October 25, 2018 - 11:40:16 AM
Last modification on : Tuesday, March 16, 2021 - 3:42:15 PM
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  • HAL Id : hal-01904732, version 1
  • OATAO : 20967



Lucien Canuet, Jérôme Lacan, Angélique Rissons, Nicolas Vedrenne, Géraldine Artaud. Cross layer optimisation for adaptive-optics corrected satellite to Ground laser links. 8th symposium on Optronics in Defence and Security - OPTRO2018, Feb 2018, Paris, France. pp.1-8. ⟨hal-01904732⟩



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