TR2003-142

A Hybrid Location Estimation Scheme (H-LES) for Partially Synchronized Wireless Sensor Networks

    •  Sahinoglu, Z., Catovic, A., "A Hybrid Location Estimation Scheme (H-LES) for Partially Synchronized Wireless Sensor Networks", IEEE International Conference on Communications (ICC), June 2004, vol. 7, pp. 3797-3801.
      BibTeX TR2003-142 PDF
      • @inproceedings{Sahinoglu2004jun,
      • author = {Sahinoglu, Z. and Catovic, A.},
      • title = {A Hybrid Location Estimation Scheme (H-LES) for Partially Synchronized Wireless Sensor Networks},
      • booktitle = {IEEE International Conference on Communications (ICC)},
      • year = 2004,
      • volume = 7,
      • pages = {3797--3801},
      • month = jun,
      • url = {https://www.merl.com/publications/TR2003-142}
      • }
  • Research Area:

    Communications

Abstract:

Heterogeneity is the key distinguishing characteristic of wireless sensor networks (WSN), compared to wireless cellular networks (WCN). It may appear in the form of communication ranges of sensor devices, synchronization and signal processing capabilities. In this article, we develop a hybrid location estimation scheme for heterogeneous WSNs with unsynchronized shortrange simple relays and mobile sensors nodes, and synchronized stations. Our scheme employs combination of time difference of arrival (TDOA) and received signal strength (RSS) measurements, whereby the TDOA is used to filter out the clock offset that appears due to the lack of synchronization. We quantify the estimation accuracy of the scheme by deriving the Cramer-Rao bound (CRB), and discuss the performance trade-off between the number of synchronized and non-synchronized devices involved.

 

  • Related News & Events

    •  NEWS    ICC 2004: 4 publications by Zafer Sahinoglu, Chia Shen and others
      Date: June 20, 2004
      Where: IEEE International Conference on Communications (ICC)
      Brief
      • The papers "A New Multi-path Selection Scheme for Video Streaming on Overlay Networks" by Ma, Z., Shao, H.-R. and Shen, C., "A Hybrid Location Estimation Scheme (H-LES) for Partially Synchronized Wireless Sensor Networks" by Sahinoglu, Z. and Catovic, A., "The Trade-off Between Processing Gains of Impulse Radio Systems in the Presence of Timing Jitter" by Gezici, S., Molisch, A.F., Poor, H.V. and Kobayashi, H. and "Effect of Timing Jitter on the Trade-off Between Processing Gains" by Gezici, S., Kobayashi, H., Poor, H.V. and Molisch, A.F. were presented at the IEEE International Conference on Communications (ICC).
    •