Research Article
Improved Navigation Capabilities in Groups of Cooperative Wireless Body Area Networks
@INPROCEEDINGS{10.4108/icst.bodynets.2014.256999, author={Jihad HAMIE and Claude CHAUDET and Benoit DENIS}, title={Improved Navigation Capabilities in Groups of Cooperative Wireless Body Area Networks}, proceedings={9th International Conference on Body Area Networks}, publisher={ICST}, proceedings_a={BODYNETS}, year={2014}, month={11}, keywords={cooperative localization extended kalman filter group navigation heterogeneous networks impulse radio ranging time of flight ultra wideband wireless body area networks}, doi={10.4108/icst.bodynets.2014.256999} }- Jihad HAMIE
Claude CHAUDET
Benoit DENIS
Year: 2014
Improved Navigation Capabilities in Groups of Cooperative Wireless Body Area Networks
BODYNETS
ACM
DOI: 10.4108/icst.bodynets.2014.256999
Abstract
This paper addresses the problem of navigation in cooperative groups of Wireless Body Area Networks. On-body radio devices determine their position by estimating their distance to other nodes from the measurement of the Round Trip Time Of Flight of Impulse Radio-Ultra Wideband signals. The nodes not only measure their distance to fixed anchors,but also use device-to-device measurements, which improves spatial diversity and redundancy yielding to a better localization accuracy and robustness. However, such measurements are easily biased by line-of-sight conditions and body shadowing. We propose to apply a biased version of the extended Kalman filter to alleviate the e ffect of measurement biases in Non Line Of Sight (NLOS) conditions and combine this filter with an NLOS detection mechanism from the literature and evaluate, by simulation, the achieved gain.