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Motion capture might become one key feature of future Wireless Body Sensor Networks (WBSN), allowing new applications such as home activity monitoring, nomadic postural rehabilitation or sportive gesture recording through standard on-body communications. In this context we present herein a stand-alone solution that enables the localization of wearable wireless nodes relatively to a body-strapped Local...
This paper investigates the impact of realistic antennas on joint anchor-less localization and indoor characterization based on Impulse Radio (IR) Ultra Wideband (UWB) communications. In this frame, the Maximum Averaged Likelihood (MAL) algorithm and its extended version are considered, both relying on a tree approach consisting in two stages. The first part of the process, which is common to both...
This paper presents an algorithm that enables anchor-less localization for pairs of static Impulse Radio - Ultra Wide Band (IR-UWB) devices in a room. The estimation progresses through a tree, as the most significant received paths are successively considered. Unlikely path parameters estimates are progressively rejected, relying on cross-correlation (i.e. with respect to predicted waveforms), as...
The recent demonstration of precise ranging measurements through low power Low Data Rate (LDR) Impulse Radio - Ultra Wideband (IR-UWB) communications has disclosed new perspectives for cooperative location-enabled wireless networks. With this respect, joint ranging and distributed positioning mechanisms supported by specific protocol transactions have already been proposed within user-centric infrastructureless...
A few years ago, IEEE 802.15.4a channel models t were initially introduced to assess the performance of Low Data Rate (LDR) Impulse Radio - Ultra Wideband (IR-UWB) peer-to-peer communications in a variety of indoor and outdoor environments, including Line of Sight (LOS) and Non Line of Sight (NLOS) propagation configurations. However, recent r wireless applications such as indoor target tracking or...
This paper deals with Medium Access Control (MAC) techniques adapted to location applications in Ultra Wideband (UWB) Low Data Rate (LDR) wireless networks for which low power consumption, low complexity location and relaying capabilities are identified as critical features. In comparison with the IEEE 802.15.4 MAC, the proposed solution is completely described by the use of self-contained beacons...
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