Now showing items 1-6 of 6

    • A distributed positioning algorithm for cooperative active and passive sensors 

      Gholami, M.R.; Gezici, Sinan; Rydström, M.; Ström, E.G. (IEEE, 2010)
      The problem of positioning a target node is studied for wireless sensor networks with cooperative active and passive sensors. Two-way time-of-arrival and time-difference-of-arrival measurements made by both active and ...
    • Hybrid TW-TOA/TDOA positioning algorithms for cooperative wireless networks 

      Gholami, M.R.; Gezici, Sinan; Ström, E.G.; Rydström, M. (IEEE, 2011)
      The 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 ...
    • Optimal jamming of wireless localization systems 

      Gezici, Sinan; Gholami, M.R.; Bayram, S.; Jansson, M. (IEEE, 2015-06)
      In this study, optimal jamming of wireless localization systems is investigated. Two optimal power allocation schemes are proposed for jammer nodes in the presence of total and peak power constraints. In the first scheme, ...
    • Positioning algorithms for cooperative networks in the presence of an unknown turn-around time 

      Gholami, M.R.; Gezici, Sinan; Ström, E.G.; Rydström, M. (IEEE, 2011)
      This 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 ...
    • Range based sensor node localization in the presence of unknown clock skews 

      Gholami, M.R.; Gezici, Sinan; Strom, E.G. (IEEE, 2013)
      We deal with the positioning problem based on two-way time-of-arrival (TW-TOA) measurements in asynchronous wireless sensor networks. The optimal estimator for this problem poses a difficult global optimization problem. ...
    • Static positioning using UWB range measurements 

      Gholami, M.R.; Ström, E.G.; Sottile F.; Dardari, D.; Conti, A.; Gezici, Sinan; Rydström, M.; Spirito, M.A. (IEEE, 2010)
      The performance of several existing and partly new algorithms for positioning of sensor node based on distance estimate is compared when the distance estimates are obtained from a measurement campaign. The distance estimates ...