Show simple item record

dc.contributor.authorGholami, M.R.en_US
dc.contributor.authorGezici, Sinanen_US
dc.contributor.authorStröm, E.G.en_US
dc.contributor.authorRydström, M.en_US
dc.coverage.spatialKyoto, Japanen_US
dc.date.accessioned2016-02-08T12:18:13Z
dc.date.available2016-02-08T12:18:13Z
dc.date.issued2011en_US
dc.identifier.issn0536-1486
dc.identifier.urihttp://hdl.handle.net/11693/28355
dc.descriptionDate of Conference: 5-9 June 2011en_US
dc.description.abstractThe problem of positioning an unknown target is studied for a cooperative wireless sensor network using hybrid two-way time-of-arrival and time-difference-of-arrival measurements. A maximum likelihood estimator (MLE) can be employed to solve the problem. Due to the non-linear nature of the cost function in the MLE, a numerical method, e.g., an iterative search algorithm with a good initial point, should be taken to accurately estimate the target. To avoid drawbacks in a numerical method, we instead linearize the measurements and obtain a new two-step estimator that has a closed-form solution in each step. Simulation results confirm that the proposed linear estimator can attain Cramer-Rao lower bound for sufficiently high SNR. © 2011 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.title2011 IEEE International Conference on Communications (ICC)en_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/icc.2011.5962647en_US
dc.subjectCooperative positioningen_US
dc.subjectlinear estimatoren_US
dc.subjectwireless sensor networksen_US
dc.subjectClosed form solutionsen_US
dc.subjectCooperative positioningen_US
dc.subjectCooperative wireless networksen_US
dc.subjectCramer Rao lower bounden_US
dc.subjectHigh SNRen_US
dc.subjectInitial pointen_US
dc.subjectLinear estimatorsen_US
dc.subjectMaximum likelihood estimatoren_US
dc.subjectNon-linearen_US
dc.subjectPositioning algorithmsen_US
dc.subjectSearch Algorithmsen_US
dc.subjectSimulation resulten_US
dc.subjectTime-difference-of-arrivalen_US
dc.subjectTime-of-arrivalen_US
dc.subjectWireless sensoren_US
dc.subjectAlgorithmsen_US
dc.subjectCramer-Rao boundsen_US
dc.subjectEstimationen_US
dc.subjectMaximum likelihood estimationen_US
dc.subjectNumerical methodsen_US
dc.subjectSensorsen_US
dc.subjectWireless sensor networksen_US
dc.titleHybrid TW-TOA/TDOA positioning algorithms for cooperative wireless networksen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.identifier.doi10.1109/icc.2011.5962647en_US
dc.publisherIEEEen_US
dc.contributor.bilkentauthorGezici, Sinan


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record