Description
Date depot: 1 janvier 1900
Titre: Etude expérimentale et modélisation des antennes et du canal de propagation pour les réseaux corporels sans fil (Experimental study and modelling of Wireless BANs antennas and channel)
Directeur de thèse:
Alain SIBILLE (LTCI (EDMH))
Directeur de thèse:
Christophe ROBLIN (LTCI (EDMH))
Domaine scientifique: Sciences et technologies de l'information et de la communication
Thématique CNRS : Non defini
Resumé:
Interest on Wireless Body Area Networks (WBANs) has been growing worldwide for about 5 (or 10) years. Various scenarios are of concern involving several sensors or actuators on or in the vicinity of the human body, for on one hand performing measurements (e.g. physiological) and on the other hand communicating, either from one point of the body to another (including in the body, i.e. implants), or off the body. Many applications are envisaged, covering domains as diverse as healthcare, sport, entertainment or military: actually,the WBANs will be more and more present in our daily activities in the very next years.
The PhD work will first involve the experimental characterization in the Frequency Domain (FD) of the static on-body channel (enhanced by e.m. simulations) in the framework of a scenario-based approach ('Hip-to-chest', 'Hip-to-wrist', etc.), directly connected to end-user applications. Second, the collected database will be processed to extract statistical models, trying to discriminate the various sources of variability. In parallel, the unstationary channel, restricted to the walking posture, will be characterized in the FD, thanks to the fast sweep rates of recent VNAs and moderate involved Doppler shifts (~< 15 Hz). This unusual approach will be compared Time Domain sounding techniques.
Doctorant.e: Wei Yunfei