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Low-power IR-UWB coherent TOA estimators with suboptimal sinusoidal templates for UWB-based body area networks

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Abstract

In this article, we propose and study the performance of low-power impulse radio ultra-wideband correlation-based time-of-arrival (TOA) estimators for body area networks. In particular, we study and compare the signal-to-noise-ratio degradation of TOA correlator-based estimators assuming optimal, real and complex suboptimal sinusoidal templates. Moreover, we study the improved Ziv-Zakai lower bound for complex suboptimal-template based TOA estimators. Then, we study and compare the performance of practical correlator-based TOA estimators using optimal, real and complex suboptimal sinusoidal templates via simulations in the IEEE 802.15.6a UWB on-body channel model as well as actual on-body measurements. The performance of real suboptimal template-based estimators approaches the performance of optimal TOA estimators based on simulations and actual measurements. We show that low-power is traded for a minimal performance loss.

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Notes

  1. Mobile and Portable Radio Research Group at Virginia Tech.

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Acknowledgments

The authors would like to thank Haris Volos, former Ph.D. candidate at Wireless @ Virginia Tech research group, for taking the UWB measurements.

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Authors and Affiliations

  1. Department of Computer Engineering, Arab Academy for Science, Technology & Maritime Transport (AASTMT), Abu Kir Campus, P.O. Box 1029, Alexandria, Egypt

    Mohamad Abou El-Nasr

  2. Department of Electronics and Communications Engineering, Arab Academy for Science, Technology & Maritime Transport (AASTMT), Abu Kir Campus, P.O. Box 1029, Alexandria, Egypt

    Heba A. Shaban

  3. The Bradley Department of Electrical and Computer Engineering, Virginia Tech University, Blacksburg, VA, 24061, USA

    R. Michael Buehrer

  4. Wireless@Virginia Tech Research Group, Blacksburg, VA, 24061, USA

    R. Michael Buehrer

Authors
  1. Mohamad Abou El-Nasr
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  2. Heba A. Shaban
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  3. R. Michael Buehrer
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Correspondence to Heba A. Shaban.

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Abou El-Nasr, M., Shaban, H.A. & Buehrer, R.M. Low-power IR-UWB coherent TOA estimators with suboptimal sinusoidal templates for UWB-based body area networks. Wireless Netw 17, 1641–1648 (2011). https://doi.org/10.1007/s11276-011-0369-0

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  • DOI: https://doi.org/10.1007/s11276-011-0369-0

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