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Contributions to cooperative localization techniques within mobile wireless bady area networks

Abstract : The PhD investigations aim at exploring new WBAN cooperative localization mechanisms, which could benefit jointly from on-body links, body-to-body links between distinct mobile users or off-body links with respect to the infrastructure. Following a multidisciplinary approach, we have thus addressed theoretical questions related to physical modeling or to algorithmic and cross-layer design. A few more practical aspects have also been dealt with. More specifically, based on WBAN channel measurements, single-link ranging error models are first discussed for more realistic performance assessment. Then a Constrained Distributed Weighted Multi-Dimensional Scaling (CDWMDS) positioning algorithm is put forward for relative MoCap purposes, coping with on-body nodes' asynchronism to reduce system latency and exploiting the presence of constant-length radio links for better accuracy. Subsequently we consider extending this algorithm for larger-scale asbolute MoCap applications within a 2-step localization approach that incorporates additional off-body links in a heterogeneous WBAN framework. Then, both individual and collective kinds of navigation are addressed. In both MoCap and navigation scenarios, low-complexity solutions exploiting on-body deployment diversity enable to combat error propagation and strong range biases due to body shadowing, relying on on-body nodes' dispersion or graph neighborhood to approximate the corrupted distances. Finally, experiments based on real IR-UWB radio platforms validate in part the previous proposals, while showing their practical limitations.
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https://tel.archives-ouvertes.fr/tel-00942019
Contributor : Jhad Hamie <>
Submitted on : Wednesday, February 5, 2014 - 4:33:45 PM
Last modification on : Thursday, June 11, 2020 - 5:04:05 PM
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  • HAL Id : tel-00942019, version 2

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Jhad Hamie. Contributions to cooperative localization techniques within mobile wireless bady area networks. Electromagnetism. Université Nice Sophia Antipolis, 2013. English. ⟨tel-00942019v2⟩

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