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- Publisher Website: 10.1016/j.sigpro.2016.02.007
- Scopus: eid_2-s2.0-84961631680
- WOS: WOS:000374356100022
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Article: Fully distributed Clock Synchronization in Wireless Sensor Networks Under Exponential Delays
Title | Fully distributed Clock Synchronization in Wireless Sensor Networks Under Exponential Delays |
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Authors | |
Keywords | Alternating direction method of multipliers (ADMM) Distributed clock synchronization Exponential delays Wireless sensor networks |
Issue Date | 2016 |
Publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sigpro |
Citation | Signal Processing, 2016, v. 125, p. 261-273 How to Cite? |
Abstract | In this paper, we study the global clock synchronization problem for wireless sensor networks under unknown exponential delays in the two-way message exchange mechanism. The joint maximum likelihood estimator of clock offsets, clock skews and fixed delays for the network is formulated as a linear programming (LP) problem. Then, based on the alternating direction method of multipliers (ADMM), we propose a fully distributed synchronization algorithm which has low communication overhead and computation cost. Simulation results show that the proposed algorithm achieves better accuracy than consensus algorithm and the distributed least squares algorithm, and can always converge to the centralized optimal solution. |
Persistent Identifier | http://hdl.handle.net/10722/231938 |
ISSN | 2023 Impact Factor: 3.4 2023 SCImago Journal Rankings: 1.065 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | LUO, B | - |
dc.contributor.author | CHENG, L | - |
dc.contributor.author | Wu, YC | - |
dc.date.accessioned | 2016-09-20T05:26:30Z | - |
dc.date.available | 2016-09-20T05:26:30Z | - |
dc.date.issued | 2016 | - |
dc.identifier.citation | Signal Processing, 2016, v. 125, p. 261-273 | - |
dc.identifier.issn | 0165-1684 | - |
dc.identifier.uri | http://hdl.handle.net/10722/231938 | - |
dc.description.abstract | In this paper, we study the global clock synchronization problem for wireless sensor networks under unknown exponential delays in the two-way message exchange mechanism. The joint maximum likelihood estimator of clock offsets, clock skews and fixed delays for the network is formulated as a linear programming (LP) problem. Then, based on the alternating direction method of multipliers (ADMM), we propose a fully distributed synchronization algorithm which has low communication overhead and computation cost. Simulation results show that the proposed algorithm achieves better accuracy than consensus algorithm and the distributed least squares algorithm, and can always converge to the centralized optimal solution. | - |
dc.language | eng | - |
dc.publisher | Elsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/sigpro | - |
dc.relation.ispartof | Signal Processing | - |
dc.rights | Posting accepted manuscript (postprint): © <year>. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | - |
dc.subject | Alternating direction method of multipliers (ADMM) | - |
dc.subject | Distributed clock synchronization | - |
dc.subject | Exponential delays | - |
dc.subject | Wireless sensor networks | - |
dc.title | Fully distributed Clock Synchronization in Wireless Sensor Networks Under Exponential Delays | - |
dc.type | Article | - |
dc.identifier.email | Wu, YC: ycwu@eee.hku.hk | - |
dc.identifier.authority | Wu, YC=rp00195 | - |
dc.identifier.doi | 10.1016/j.sigpro.2016.02.007 | - |
dc.identifier.scopus | eid_2-s2.0-84961631680 | - |
dc.identifier.hkuros | 264930 | - |
dc.identifier.volume | 125 | - |
dc.identifier.spage | 261 | - |
dc.identifier.epage | 273 | - |
dc.identifier.isi | WOS:000374356100022 | - |
dc.publisher.place | Netherlands | - |
dc.identifier.issnl | 0165-1684 | - |