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Performances de l'optique sans fil pour les réseaux de capteurs corporels

Abstract : This thesis deals with the performance of optical girelles communications for body area networks (BAN) as an alternative solution to the radiofrequency one, in the context of mobile healthcare monitoring. After presenting the main characteristics of a BAN using the radiofrequency technology, specifically in the UWB band, we explain the advantages of the optical wireless technology. Diffuse propagation based on infrared technology is then considered for BAN, exploiting optical reflections from environment surfaces. Several optical wireless channel modeling methods are introduced, and we consider two solutions for the link between two on-body nodes: a classical method named “one reflection model”, used to estimate performance variations, and a ray-launching method, used to take into account a great amount of optical reflections. Considering several scenarios, we determine the outage probability, and show that the diffuse optical wireless technology is able to achieve an on-body link, with the data rates and the quality of service required by health monitoring applications, for a transmitted power far lower than the limit defined in standards. Then, we evaluate the theoretical performance, in terms of error probability, of an optical wireless BAN, considering the optical code division multiple access technique. Finally, we show that a BAN using optical wireless technology is theoretically feasible, regarding a health monitoring application, and considering the mobility of the patient in indoor environment.
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Submitted on : Thursday, March 17, 2016 - 3:32:06 PM
Last modification on : Thursday, May 17, 2018 - 4:05:11 AM
Long-term archiving on: : Saturday, June 18, 2016 - 5:53:38 PM


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  • HAL Id : tel-01290086, version 1



Ludovic Chevalier. Performances de l'optique sans fil pour les réseaux de capteurs corporels. Optique / photonique. Université de Limoges, 2015. Français. ⟨NNT : 2015LIMO0118⟩. ⟨tel-01290086⟩



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