Enhanced position estimation via node cooperation

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buir.contributor.authorGezici, Sinan
dc.contributor.authorSahinoglu, Z.en_US
dc.contributor.authorGezici, Sinanen_US
dc.coverage.spatialCape Town, South Africaen_US
dc.date.accessioned2016-02-08T12:23:49Z
dc.date.available2016-02-08T12:23:49Z
dc.date.issued2010en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.descriptionDate of Conference: 23-27 May 2010en_US
dc.description.abstractTwo-way time-of-arrival (TW-ToA) is a widely used ranging protocol that can provide the distance between two devices without time synchronization. One drawback of the TW-ToA is poor positioning accuracy in the absence of a sufficient number of reference ranging devices. Also, for a self-positioning system with a limited battery life, it might be necessary to limit the number of transmissions while satisfying accuracy constraints. In this paper, a cooperative positioning protocol [1] is studied, which can improve positioning accuracy compared to the conventional TW-ToA based positioning systems and also facilitate positioning with fewer packet transmissions; hence, it can prolong battery life on average. The maximum likelihood estimator is obtained for the cooperative technique and the limits on the positioning accuracy are quantified in terms of the Cramer-Rao lower bound (CRLB). Simulation results are provided in order to show performance improvements. ©2010 IEEE.en_US
dc.identifier.doi10.1109/ICC.2010.5502319en_US
dc.identifier.issn0536-1486
dc.identifier.urihttp://hdl.handle.net/11693/28558
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/ICC.2010.5502319en_US
dc.source.title2010 IEEE International Conference on Communicationsen_US
dc.subjectCooperative positioningen_US
dc.subjectCramer-Rao lower bound (CRLB)en_US
dc.subjectMaximum likelihooden_US
dc.subjectTime-of-arrival (ToA)en_US
dc.subjectBattery lifeen_US
dc.subjectCooperative positioningen_US
dc.subjectCramer-rao lower bounden_US
dc.subjectMaximum likelihood estimatoren_US
dc.subjectNode cooperationen_US
dc.subjectPacket transmissionsen_US
dc.subjectPerformance improvementsen_US
dc.subjectPosition estimationen_US
dc.subjectPositioning accuracyen_US
dc.subjectPositioning systemen_US
dc.subjectSelf-positioningen_US
dc.subjectSimulation resulten_US
dc.subjectTime synchronizationen_US
dc.subjectTime-of-arrivalen_US
dc.subjectCramer-Rao boundsen_US
dc.subjectMaximum likelihood estimationen_US
dc.titleEnhanced position estimation via node cooperationen_US
dc.typeConference Paperen_US

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