TR2005-026

Threshold-Based TOA Estimation for Impulse Radio UWB Systems

    •  Sahinoglu, Z., Guvenc, I., "Threshold-Based TOA Estimation for Impulse Radio UWB Systems", IEEE International Conference on Ultra-Wideband (ICU), September 2005, pp. 420-425.
      BibTeX TR2005-026 PDF
      • @inproceedings{Sahinoglu2005sep,
      • author = {Sahinoglu, Z. and Guvenc, I.},
      • title = {Threshold-Based TOA Estimation for Impulse Radio UWB Systems},
      • booktitle = {IEEE International Conference on Ultra-Wideband (ICU)},
      • year = 2005,
      • pages = {420--425},
      • month = sep,
      • url = {https://www.merl.com/publications/TR2005-026}
      • }
  • Research Area:

    Signal Processing

Abstract:

Highly dispersive nature of ultra-wideband (UWB) channels makes time of arrival (TOA) estimation extremely challenging, where the leading-edge path is not necessarily the strongest path. Since the bandwidth of a received UWB signal is very large, the Nyquist rate sampling becomes impractical, hence motivating lower complexity and yet accurate ranging techniques at feasible sampling rates. In this paper, we consider TOA estimation based on symbol rate samples that are obtained after a square-law device. An adaptive threshold selection approach based on the minimum and maximum values of the energy samples is introduced, and optimal values of the thresholds for different signal to noise ratios (SNRs) are investigated via simulations. Theoretical closed form expressions are derived for mean absolute TOA estimation error, and compared with simulations using IEEE 802.15.4a channel models.

 

  • Related News & Events

    •  NEWS    ICU 2005: 2 publications by Zafer Sahinoglu and others
      Date: September 5, 2005
      Where: IEEE International Conference on Ultra-Wideband (ICU)
      Brief
      • The papers "Threshold-Based TOA Estimation for Impulse Radio UWB Systems" by Sahinoglu, Z. and Guvenc, I. and "TOA Estimation with Different IR-UWB Transceiver Types" by Guvenc, I. and Sahinoglu, Z. were presented at the IEEE International Conference on Ultra-Wideband (ICU).
    •