Enhanced Position Estimation Via Node Cooperation

    •  Sahinoglu, Z., Gezici, S., "Enhanced Position Estimation via Node Cooperation", IEEE International Conference on Communications (ICC), DOI: 10.1109/​ICC.2010.5502319, May 2010, pp. 1-6.
      BibTeX TR2010-066 PDF
      • @inproceedings{Sahinoglu2010may,
      • author = {Sahinoglu, Z. and Gezici, S.},
      • title = {Enhanced Position Estimation via Node Cooperation},
      • booktitle = {IEEE International Conference on Communications (ICC)},
      • year = 2010,
      • pages = {1--6},
      • month = may,
      • doi = {10.1109/ICC.2010.5502319},
      • url = {}
      • }
  • Research Area:

    Signal Processing


Two-way time-of-arrival (TW-ToA) is a widely used ranging protocol that can provide the distance between tow 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.


  • Related News & Events

    •  NEWS   ICC 2010: 8 publications by Chunjie Duan, Jianlin Guo, Jinyun Zhang and Zafer Sahinoglu
      Date: May 23, 2010
      Where: IEEE International Conference on Communications (ICC)
      MERL Contacts: Jianlin Guo; Jinyun Zhang
      • The papers "Demodulate-and-Forward Relaying with Higher Order Modulations: Impact of Channel State Uncertainty" by Annavajjala, R., Maaref, A. and Zhang, J., "Enhanced Position Estimation via Node Cooperation" by Sahinoglu, Z. and Gezici, S., "A Complete Characterization of an Optimal Timer Based Selection Scheme" by Shah, V., Mehta, N.B. and Yim, M.H.R., "Clustering Based Fractional Frequency Reuse and Fair Resource Allocation in Multi-cell Networks" by Fu, W., Tao, Z., Zhang, J. and Agrawal, D.P., "Subcarrier Spreading for ICI Mitigation in OFDM/OFDMA Systems" by Gao, W., Duan, C. and Zhang, J., "Prioritized Broadcast Contention Control in VANET" by Ye, F., Yim, M.H.R., Guo, J., Zhang, J. and Roy, S., "Adaptive Probabilistic Decision-based Energy Saving Strategy for the Next Generation Cellular Wireless Systems" by Fu, W., Tao, Z., Zhang, J. and Agrawal, D.P. and "Congestion Control to Achieve Optimal Broadcast Efficiency in VANETs" by Ye, F., Yim, M.H.R., Zhang, J. and Roy, S. were presented at the IEEE International Conference on Communications (ICC).