Improved lower bounds on ranging accuracy of rectangular template-based UWB correlation radar for vital sign monitoring

H.A. Shaban and M. Abou El-Nasr

Journal of Electromagnetic Waves and Applications, 2013, vol. 27, issue 3, 355-364

Abstract: This paper proposes and investigates low-power rectangular ultra wideband (UWB) correlation-based radars for vital sign monitoring with a target ranging accuracy of 0.08 mm. The lower bounds on the time-of-arrival estimation error are studied. In particular, we study and compare the improved Ziv-Zakai lower bound of rectangular template-based estimators to the corresponding optimal estimators via semi-analytic simulations in the UWB IEEE 802.15.6a CM #3 channel and a simulated channel model based on actual on-body measurements. We show that the investigated radar achieves the target ranging accuracy at a signal-to-noise-ratio (SNR) = 40 dB. Also, we study the effect of template pulse misalignment on the proposed estimators. We provide theoretical as well as numerical results based on semi-analytic simulations in the IEEE 802.15.6a UWB channels. A link budget is designed for the achievement of the target SNR with a link margin = 3 dB.

Date: 2013
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DOI: 10.1080/09205071.2013.746631

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Journal of Electromagnetic Waves and Applications is currently edited by Mohamad Abou El-Nasr and Pankaj Kumar Choudhury

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