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dc.contributor.authorGholami, M.R.en_US
dc.contributor.authorGezici, S.en_US
dc.contributor.authorStröm, E.G.en_US
dc.contributor.authorRydström, M.en_US
dc.date.accessioned2016-02-08T12:18:00Z
dc.date.available2016-02-08T12:18:00Z
dc.date.issued2011en_US
dc.identifier.urihttp://hdl.handle.net/11693/28347
dc.description.abstractThis paper addresses the problem of single node positioning in cooperative network using hybrid two-way time-of-arrival and time-difference-of-arrival where, the turn-around time at the target node is unknown. Considering the turn-around time as a nuisance parameter, the derived maximum likelihood estimator (MLE) brings a difficult global optimization problem due to local minima in the cost function of the MLE. To avoid drawbacks in solving the MLE, we obtain a linear two-step estimator using non-linear pre-processing which is algebraic and closed-form in each step. To compare different methods, Cramér-Rao lower bound (CRLB) is derived. Simulation results confirm that the proposed linear estimator attains the CRLB for sufficiently high signal-to-noise ratios. © 2011 IEEE.en_US
dc.language.isoEnglishen_US
dc.source.titleIEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWCen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/SPAWC.2011.5990386en_US
dc.subjectCooperative positioningen_US
dc.subjectlinear estimatoren_US
dc.subjectwireless sensor networksen_US
dc.subjectClosed formen_US
dc.subjectCooperative networksen_US
dc.subjectCooperative positioningen_US
dc.subjectGlobal optimization problemsen_US
dc.subjectHigh signal-to-noise ratioen_US
dc.subjectLinear estimatorsen_US
dc.subjectLocal minimumsen_US
dc.subjectLower boundsen_US
dc.subjectMaximum likelihood estimatoren_US
dc.subjectNon-linearen_US
dc.subjectNuisance parameteren_US
dc.subjectPositioning algorithmsen_US
dc.subjectPre-processingen_US
dc.subjectSimulation resulten_US
dc.subjectTarget nodesen_US
dc.subjectTime-difference-of-arrivalen_US
dc.subjectTime-of-arrivalen_US
dc.subjectEstimationen_US
dc.subjectFading (radio)en_US
dc.subjectGlobal optimizationen_US
dc.subjectMaximum likelihood estimationen_US
dc.subjectSignal processingen_US
dc.subjectSignal to noise ratioen_US
dc.subjectWireless telecommunication systemsen_US
dc.subjectWireless sensor networksen_US
dc.titlePositioning algorithms for cooperative networks in the presence of an unknown turn-around timeen_US
dc.typeConference Paperen_US
dc.departmentDepartment of Electrical and Electronics Engineering
dc.citation.spage166en_US
dc.citation.epage170en_US
dc.identifier.doi10.1109/SPAWC.2011.5990386en_US


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