Études et implémentation d'une couche physique UWB impulsionnelle à bas débit et faible complexité¶

Abstract : From its new approach, the Impulse Radio Ultra Wide Band (IR-UWB) technology is carrying many promises in terms of troughput, robustness, and low energy consumption. Because his bandwidth (higher than 500 MHz), it also makes it possible to do high accuracy geolocalisation. This thesis work began whereas the first publications on UWB had extraordinary simulation results. In order to better determine IR-UWB real potential in the field of low throughput communications to which their one seems particularly adapted, this study was directed towards the prototyping of an UWB link, underlain by the constraint of strong complexity reduction. This study starts with the specification of a physical layer adapted to the technology and the applicability considered, which is based on a very simple transmission scheme. The transmitter is based on a very simple architecture build with low cost "off the shelf" components and thus shows the possibility of embarking such a structure in an autonomous low cost communicating object. The receiver structure follows an original approach based on a video detector and a variable threshold comparator, which makes it possible to slacken certain blocking constraints like those related to synchronization. A set of low complexity receiving algorithms is also developed to enable the use of this structure while raising various technological deadlock. By this work, a global reflexion on an low data rate IR-UWB system was conducted and led to the realization of a physical radio link which shows the technical viability of this technology. Moreover, the results obtained were the base of a full proposal carried in standardization.
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https://tel.archives-ouvertes.fr/tel-00638640
Contributor : Jean Schwoerer <>
Submitted on : Sunday, November 6, 2011 - 5:49:37 PM
Last modification on : Friday, November 16, 2018 - 1:24:29 AM
Long-term archiving on : Tuesday, February 7, 2012 - 2:22:39 AM

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  • HAL Id : tel-00638640, version 1

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Jean Schwoerer. Études et implémentation d'une couche physique UWB impulsionnelle à bas débit et faible complexité¶. Traitement du signal et de l'image [eess.SP]. INSA de Rennes; Université Rennes 1, 2006. Français. ⟨tel-00638640⟩

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