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Conference Paper: Robust joint localization and time synchronization in wireless sensor networks with bounded anchor uncertainties

TitleRobust joint localization and time synchronization in wireless sensor networks with bounded anchor uncertainties
Authors
KeywordsAnchor uncertainty
Localization
Semidefinite programming
Time synchronization
Issue Date2009
PublisherIEEE.
Citation
The IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2009), Taipei, Taiwan, 19-24 April 2009. In Proceedings of ICASSP, 2009, p. 2793-2796 How to Cite?
AbstractA unified framework to jointly solve the problems of localization and synchronization at the same time is presented in this paper. The joint approach is attractive because it can solve both localization and synchronization using the same set of message exchanges, which is extremely important for energy saving in wireless sensor networks. The inaccuracy of anchor locations and timings is taken into account to provide accurate joint localization and synchronization. The anchor uncertainties are assumed to be bounded, but knowledge of the statistics of anchor uncertainties is not required. The problem is formulated into a linear model with uncertainties on both sides of the equation. A robust joint estimator is then proposed based on minimizing the worst-case mean square error and the solution is obtained by solving a semidefinite programming problem. Simulation results show that the proposed estimator outperforms the traditional least squares estimator at the cost of higher computational complexity. ©2009 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/61928
ISSN
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorZheng, Jen_HK
dc.contributor.authorWu, YCen_HK
dc.date.accessioned2010-07-13T03:50:22Z-
dc.date.available2010-07-13T03:50:22Z-
dc.date.issued2009en_HK
dc.identifier.citationThe IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2009), Taipei, Taiwan, 19-24 April 2009. In Proceedings of ICASSP, 2009, p. 2793-2796en_HK
dc.identifier.issn1520-6149en_HK
dc.identifier.urihttp://hdl.handle.net/10722/61928-
dc.description.abstractA unified framework to jointly solve the problems of localization and synchronization at the same time is presented in this paper. The joint approach is attractive because it can solve both localization and synchronization using the same set of message exchanges, which is extremely important for energy saving in wireless sensor networks. The inaccuracy of anchor locations and timings is taken into account to provide accurate joint localization and synchronization. The anchor uncertainties are assumed to be bounded, but knowledge of the statistics of anchor uncertainties is not required. The problem is formulated into a linear model with uncertainties on both sides of the equation. A robust joint estimator is then proposed based on minimizing the worst-case mean square error and the solution is obtained by solving a semidefinite programming problem. Simulation results show that the proposed estimator outperforms the traditional least squares estimator at the cost of higher computational complexity. ©2009 IEEE.en_HK
dc.languageengen_HK
dc.publisherIEEE.-
dc.relation.ispartofProceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP 2009en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsIEEE International Conference on Acoustics, Speech and Signal Processing Proceedings. Copyright © IEEE.-
dc.rights©2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.subjectAnchor uncertaintyen_HK
dc.subjectLocalizationen_HK
dc.subjectSemidefinite programmingen_HK
dc.subjectTime synchronizationen_HK
dc.titleRobust joint localization and time synchronization in wireless sensor networks with bounded anchor uncertaintiesen_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1520-6149&volume=&spage=2793&epage=2796&date=2009&atitle=Robust+joint+localization+and+time+synchronization+in+wireless+sensor+networks+with+bounded+anchor+uncertainties-
dc.identifier.emailWu, YC:ycwu@eee.hku.hken_HK
dc.identifier.authorityWu, YC=rp00195en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/ICASSP.2009.4960203en_HK
dc.identifier.scopuseid_2-s2.0-70349203767en_HK
dc.identifier.hkuros160158en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-70349203767&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.spage2793en_HK
dc.identifier.epage2796en_HK
dc.identifier.isiWOS:000268919201238-
dc.publisher.placeUnited Statesen_HK
dc.description.otherThe IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2009), Taipei, Taiwan, 19-24 April 2009. In Proceedings of ICASSP, 2009, p. 2793-2796-
dc.identifier.scopusauthoridZheng, J=36627820800en_HK
dc.identifier.scopusauthoridWu, YC=7406894786en_HK

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