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Joint ranging and clock parameter estimation by wireless round trip time measurements
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Division of Systems and Control. Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Automatic control.
2015 (English)In: IEEE Journal on Selected Areas in Communications, ISSN 0733-8716, E-ISSN 1558-0008, Vol. 33, no 11, 2379-2390 p.Article in journal (Refereed) Published
Abstract [en]

In this paper, we develop a new technique for estimating fine clock errors and range between two nodes simultaneously by two-way time-of-arrival measurements using impulse-radio ultrawideband signals. Estimators for clock parameters and the range are proposed, which are robust with respect to outliers. They are analyzed numerically and by means of experimental measurement campaigns. The technique and derived estimators achieve accuracies below 1 Hz for frequency estimation, below 1 ns for phase estimation, and 20 cm for range estimation, at a 4-m distance using 100-MHz clocks at both nodes. Therefore, we show that the proposed joint approach is practical and can simultaneously provide clock synchronization and positioning in an experimental system.

Place, publisher, year, edition, pages
2015. Vol. 33, no 11, 2379-2390 p.
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:uu:diva-267183DOI: 10.1109/JSAC.2015.2430521ISI: 000363238300010OAI: oai:DiVA.org:uu-267183DiVA: diva2:872752
Available from: 2015-10-14 Created: 2015-11-19 Last updated: 2017-12-01Bibliographically approved

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Zachariah, Dave

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