TW-TOA based positioning in the presence of clock imperfections
buir.contributor.author | Gezici, Sinan | |
dc.citation.epage | 30 | en_US |
dc.citation.spage | 19 | en_US |
dc.citation.volumeNumber | 59 | en_US |
dc.contributor.author | Gholami, M. R. | en_US |
dc.contributor.author | Gezici, Sinan | en_US |
dc.contributor.author | Ström, E. G. | en_US |
dc.date.accessioned | 2018-04-12T10:55:28Z | |
dc.date.available | 2018-04-12T10:55:28Z | |
dc.date.issued | 2016 | en_US |
dc.department | Department of Electrical and Electronics Engineering | en_US |
dc.description.abstract | This 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.description.provenance | Made available in DSpace on 2018-04-12T10:55:28Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016 | en |
dc.identifier.doi | 10.1016/j.dsp.2016.07.023 | en_US |
dc.identifier.issn | 1051-2004 | |
dc.identifier.uri | http://hdl.handle.net/11693/36850 | |
dc.language.iso | English | en_US |
dc.publisher | Elsevier Inc. | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1016/j.dsp.2016.07.023 | en_US |
dc.source.title | Digital Signal Processing: A Review Journal | en_US |
dc.subject | Clock imperfection | en_US |
dc.subject | Concave–convex procedure | en_US |
dc.subject | Convex optimization | en_US |
dc.subject | Positioning | en_US |
dc.subject | Trust region subproblems | en_US |
dc.subject | Two-way time-of-arrival (TW-TOA) | en_US |
dc.title | TW-TOA based positioning in the presence of clock imperfections | en_US |
dc.type | Article | en_US |
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