Research Article
Nodes Updates Censoring and Scheduling in Constrained Decentralized Positioning for Large-Scale Motion Capture based on Wireless Body Area Networks
@INPROCEEDINGS{10.4108/icst.bodynets.2012.249933, author={Jihad HAMIE and Benoit DENIS and Cedric RICHARD}, title={Nodes Updates Censoring and Scheduling in Constrained Decentralized Positioning for Large-Scale Motion Capture based on Wireless Body Area Networks}, proceedings={7th International Conference on Body Area Networks}, publisher={ICST}, proceedings_a={BODYNETS}, year={2012}, month={11}, keywords={cooperative localization distributed weighted multi dimensional scaling geometric constraints ieee 802156 standard motion capture ranging relative localization time of arrival ultra wideband wireless body area networks}, doi={10.4108/icst.bodynets.2012.249933} }- Jihad HAMIE
Benoit DENIS
Cedric RICHARD
Year: 2012
Nodes Updates Censoring and Scheduling in Constrained Decentralized Positioning for Large-Scale Motion Capture based on Wireless Body Area Networks
BODYNETS
ICST
DOI: 10.4108/icst.bodynets.2012.249933
Abstract
Wireless Body Area Networks are endowed with relatively raw but intrinsic motion capture capabilities through radiolocation, which may be of interest for home activity monitoring, large-scale postural rehabilitation or gaming applications. In this context, we propose a solution to localize wearable wireless nodes relatively to a body-strapped Local Coordinate System. More particularly, we consider adapting a Constrained Distributed Weighted Multi-Dimensional Scaling algorithm that asynchronously estimates nodes' locations under fixed-length geometric constraints. This algorithm is fed by inter-node range measurements based on e.g., Impulse Radio - Ultra Wideband Time Of Arrival estimation. Several enhancements, including nodes censoring and location updates scheduling, are herein put forward to mitigate error propagation and harmful effects caused by the fast moving nodes. Simulation results are provided under moderate pedestrian mobility, relying on a realistic biomechanical model.