TW-TOA based positioning in the presence of clock imperfections

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buir.contributor.authorGezici, Sinan
dc.citation.epage30en_US
dc.citation.spage19en_US
dc.citation.volumeNumber59en_US
dc.contributor.authorGholami, M. R.en_US
dc.contributor.authorGezici, Sinanen_US
dc.contributor.authorStröm, E. G.en_US
dc.date.accessioned2018-04-12T10:55:28Z
dc.date.available2018-04-12T10:55:28Z
dc.date.issued2016en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractThis manuscript studies the positioning problem based on two-way time-of-arrival (TW-TOA) measurements in semi-asynchronous wireless sensor networks in which the clock of a target node is unsynchronized with the reference time. Since the optimal estimator for this problem involves difficult nonconvex optimization, two suboptimal estimators are proposed based on the squared-range least squares and the least absolute mean of residual errors. We formulate the former approach as an extended general trust region subproblem (EGTR) and propose a simple technique to solve it approximately. The latter approach is formulated as a difference of convex functions programming (DCP), which can be solved using a concave–convex procedure. Simulation results illustrate the high performance of the proposed techniques, especially for the DCP approach. © 2016 Elsevier Inc.en_US
dc.identifier.doi10.1016/j.dsp.2016.07.023en_US
dc.identifier.issn1051-2004
dc.identifier.urihttp://hdl.handle.net/11693/36850
dc.language.isoEnglishen_US
dc.publisherElsevier Inc.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.dsp.2016.07.023en_US
dc.source.titleDigital Signal Processing: A Review Journalen_US
dc.subjectClock imperfectionen_US
dc.subjectConcave–convex procedureen_US
dc.subjectConvex optimizationen_US
dc.subjectPositioningen_US
dc.subjectTrust region subproblemsen_US
dc.subjectTwo-way time-of-arrival (TW-TOA)en_US
dc.titleTW-TOA based positioning in the presence of clock imperfectionsen_US
dc.typeArticleen_US

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