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Conference Paper: Joint localization and time synchronization in wireless sensor networks with anchor uncertainties
Title | Joint localization and time synchronization in wireless sensor networks with anchor uncertainties |
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Authors | |
Keywords | Anchor locations Cramer-rao lower bound Energy saving Energy-constrained Generalized total least squares |
Issue Date | 2009 |
Publisher | IEEE Communications Society. |
Citation | The IEEE Conference on Wireless Communications and Networking (WCNC 2009), Budapest, Hungary, 5-8 April 2009. In Proceedings of IEEE WCNC, 2009, p. 1-5 How to Cite? |
Abstract | Although localization and synchronization share many aspects in common, they are traditionally treated separately. In this paper, we present a unified framework to jointly solve these two problems at the same time. The joint approach is attractive because it can solve both localization and synchronization using the same set of message exchanges. This is extremely important for energy saving, especially for the energy constrained wireless sensor networks. Furthermore, since the accuracy of localization and synchronization is very sensitive to the accuracy of anchor locations and timings, the joint localization and synchronization problem with inaccurate anchor is considered in this paper. A novel generalized total least squares (GTLS) based method is proposed and the Cramer-Rao lower bound (CRLB) for the joint localization and time synchronization is derived. Simulation results show that the mean square error performances of the proposed estimator can attain the CRLB. © 2009 IEEE. |
Persistent Identifier | http://hdl.handle.net/10722/62029 |
ISSN | 2020 SCImago Journal Rankings: 0.361 |
References |
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zheng, J | en_HK |
dc.contributor.author | Wu, YC | en_HK |
dc.date.accessioned | 2010-07-13T03:52:26Z | - |
dc.date.available | 2010-07-13T03:52:26Z | - |
dc.date.issued | 2009 | en_HK |
dc.identifier.citation | The IEEE Conference on Wireless Communications and Networking (WCNC 2009), Budapest, Hungary, 5-8 April 2009. In Proceedings of IEEE WCNC, 2009, p. 1-5 | en_HK |
dc.identifier.issn | 1525-3511 | en_HK |
dc.identifier.uri | http://hdl.handle.net/10722/62029 | - |
dc.description.abstract | Although localization and synchronization share many aspects in common, they are traditionally treated separately. In this paper, we present a unified framework to jointly solve these two problems at the same time. The joint approach is attractive because it can solve both localization and synchronization using the same set of message exchanges. This is extremely important for energy saving, especially for the energy constrained wireless sensor networks. Furthermore, since the accuracy of localization and synchronization is very sensitive to the accuracy of anchor locations and timings, the joint localization and synchronization problem with inaccurate anchor is considered in this paper. A novel generalized total least squares (GTLS) based method is proposed and the Cramer-Rao lower bound (CRLB) for the joint localization and time synchronization is derived. Simulation results show that the mean square error performances of the proposed estimator can attain the CRLB. © 2009 IEEE. | en_HK |
dc.language | eng | en_HK |
dc.publisher | IEEE Communications Society. | - |
dc.relation.ispartof | Proceedings of the IEEE Wireless Communications and Networking Conference, WCNC 2009 | en_HK |
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.subject | Anchor locations | - |
dc.subject | Cramer-rao lower bound | - |
dc.subject | Energy saving | - |
dc.subject | Energy-constrained | - |
dc.subject | Generalized total least squares | - |
dc.title | Joint localization and time synchronization in wireless sensor networks with anchor uncertainties | en_HK |
dc.type | Conference_Paper | en_HK |
dc.identifier.openurl | http://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1525-3511&volume=&spage=1&epage=5&date=2009&atitle=Joint+localization+and+time+synchronization+in+wireless+sensor+networks+with+anchor+uncertainties | - |
dc.identifier.email | Wu, YC:ycwu@eee.hku.hk | en_HK |
dc.identifier.authority | Wu, YC=rp00195 | en_HK |
dc.description.nature | published_or_final_version | - |
dc.identifier.doi | 10.1109/WCNC.2009.4917771 | en_HK |
dc.identifier.scopus | eid_2-s2.0-70349171955 | en_HK |
dc.identifier.hkuros | 160155 | en_HK |
dc.relation.references | http://www.scopus.com/mlt/select.url?eid=2-s2.0-70349171955&selection=ref&src=s&origin=recordpage | en_HK |
dc.identifier.spage | 1 | - |
dc.identifier.epage | 5 | - |
dc.publisher.place | United States | en_HK |
dc.description.other | The IEEE Conference on Wireless Communications and Networking (WCNC 2009), Budapest, Hungary, 5-8 April 2009. In Proceedings of IEEE WCNC, 2009, p. 1-5 | - |
dc.identifier.scopusauthorid | Zheng, J=36627820800 | en_HK |
dc.identifier.scopusauthorid | Wu, YC=7406894786 | en_HK |
dc.identifier.issnl | 1525-3511 | - |