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Joint distributed synchronization and positioning in UWB ad hoc networks using TOA

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dc.contributor.author Denis, B.
dc.contributor.author Pierrot, J. B.
dc.contributor.author Abou-Rjeily, C.
dc.date.accessioned 2016-02-16T09:15:31Z
dc.date.available 2016-02-16T09:15:31Z
dc.date.copyright 2006
dc.date.issued 2016-02-16
dc.identifier.issn 0018-9480 en_US
dc.identifier.uri http://hdl.handle.net/10725/3090
dc.description.abstract Print Request Permissions In this paper, we describe a global distributed solution that enables the simultaneous performance of time synchronization and positioning in ultra-wideband (UWB) ad hoc networks. On the one hand, the proposed synchronization scheme basically relies on cooperative two-way-ranging/time-of-arrival transactions and a diffusion algorithm that ensures the convergence of clock parameters to average reference values in each node. Although the described solution is generic at first sight, its sensitivity to time-of-arrival accuracy imposes the choice of an impulse-radio ultra-wideband physical layer in the very context. On the other hand, a distributed algorithm coupled with this synchronization scheme mitigates the impact of non-line-of-sight ranging errors on positioning accuracy without any additional protocol hook. More particularly, the realistic UWB ranging error models we use take into account UWB channel effects, as well as detection noises and relative clock drifts. Then, it is demonstrated that a cooperative and distributed maximization of the log-likelihood of range estimates can reduce the uncertainty on estimated positions in comparison with classical distributed weighted least squares approaches. Finally, the proposed distributed maximum log-likelihood algorithm proves to preserve a reasonable level of complexity in each node by approximating asynchronously the positive gradient direction of the log-likelihood function. For both distributed synchronization and positioning algorithms, simulation results are provided to illustrate the relevance of such a solution. en_US
dc.language.iso en en_US
dc.title Joint distributed synchronization and positioning in UWB ad hoc networks using TOA en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 200701131 en_US
dc.author.woa N/A en_US
dc.author.department Electrical Engineering en_US
dc.description.embargo N/A en_US
dc.relation.journal IEEE Transactions on Microwave Theory and Techniques en_US
dc.journal.volume 54 en_US
dc.journal.issue 4 en_US
dc.article.pages 1896-1977 en_US
dc.keywords Ad hoc network en_US
dc.keywords Clock drif en_US
dc.keywords Distributed algorithm en_US
dc.keywords Non line of sight (NLOS en_US
dc.keywords Positioning en_US
dc.keywords Synchronization en_US
dc.keywords Time of arrival (TOA) en_US
dc.keywords Time offset en_US
dc.keywords Two-way ranging (TWR) en_US
dc.keywords Ultra-wideband (UWB) en_US
dc.identifier.doi http://dx.doi.org/10.1109/TMTT.2006.872082 en_US
dc.identifier.ctation Denis, B., Pierrot, J. B., & Abou-Rjeily, C. (2006). Joint distributed synchronization and positioning in UWB ad hoc networks using TOA. Microwave Theory and Techniques, IEEE Transactions on, 54(4), 1896-1911. en_US
dc.author.email chadi.abourjeily@lau.edu.lb
dc.identifier.url http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1618619&tag=1
dc.orcid.id https://orcid.org/0000-0003-2255-1842


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