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Article: Low-complexity maximum-likelihood estimator for clock synchronization of wireless sensor nodes under exponential delays

TitleLow-complexity maximum-likelihood estimator for clock synchronization of wireless sensor nodes under exponential delays
Authors
KeywordsClock Synchronization
Exponential Delays
Two-Way Message Exchange Mechanism
Wireless Sensor Networks
Issue Date2011
Citation
IEEE Transactions on Signal Processing, 2011, v. 59 n. 10, p. 4860-4870 How to Cite?
AbstractIn this paper, the clock synchronization for wireless sensor networks in the presence of unknown exponential delay is investigated under the two-way message exchange mechanism. The maximum-likelihood estimator for joint estimation of clock offset, clock skew and fixed delay is first cast into a linear programming problem. Based on novel geometric analyses of the feasible domain, a low-complexity maximum likelihood estimator is then proposed. Complexities of the proposed estimators and existing algorithms are compared analytically and numerically. Simulation results further demonstrate that our proposed algorithms have advantages in terms of both performance and computational complexities. © 2011 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/155657
ISSN
2015 Impact Factor: 2.624
2015 SCImago Journal Rankings: 2.004
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorLeng, Men_US
dc.contributor.authorWu, YCen_US
dc.date.accessioned2012-08-08T08:34:42Z-
dc.date.available2012-08-08T08:34:42Z-
dc.date.issued2011en_US
dc.identifier.citationIEEE Transactions on Signal Processing, 2011, v. 59 n. 10, p. 4860-4870en_US
dc.identifier.issn1053-587Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/155657-
dc.description.abstractIn this paper, the clock synchronization for wireless sensor networks in the presence of unknown exponential delay is investigated under the two-way message exchange mechanism. The maximum-likelihood estimator for joint estimation of clock offset, clock skew and fixed delay is first cast into a linear programming problem. Based on novel geometric analyses of the feasible domain, a low-complexity maximum likelihood estimator is then proposed. Complexities of the proposed estimators and existing algorithms are compared analytically and numerically. Simulation results further demonstrate that our proposed algorithms have advantages in terms of both performance and computational complexities. © 2011 IEEE.en_US
dc.languageengen_US
dc.relation.ispartofIEEE Transactions on Signal Processingen_US
dc.rights©2011 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.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.subjectClock Synchronizationen_US
dc.subjectExponential Delaysen_US
dc.subjectTwo-Way Message Exchange Mechanismen_US
dc.subjectWireless Sensor Networksen_US
dc.titleLow-complexity maximum-likelihood estimator for clock synchronization of wireless sensor nodes under exponential delaysen_US
dc.typeArticleen_US
dc.identifier.emailWu, YC:ycwu@eee.hku.hken_US
dc.identifier.authorityWu, YC=rp00195en_US
dc.description.naturepublished_or_final_versionen_US
dc.identifier.doi10.1109/TSP.2011.2160857en_US
dc.identifier.scopuseid_2-s2.0-80052891363en_US
dc.identifier.hkuros208105-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-80052891363&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume59en_US
dc.identifier.issue10en_US
dc.identifier.spage4860en_US
dc.identifier.epage4870en_US
dc.identifier.isiWOS:000297111500028-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridLeng, M=34881982000en_US
dc.identifier.scopusauthoridWu, YC=7406894786en_US

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