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Theoretical limits and a practical estimator for joint estimation of respiration and heartbeat rates using UWB impulse radio

机译:使用UWB脉冲无线电联合估算呼吸和心跳速率的理论极限和实用估算器

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摘要

In this paper, Cramer-Rao lower bounds are derived fo r joint estimation of respiration and heartbeat rates via impulse radio ultra-wideband signals. Generic models are employed for displacement functions due to respiration and heartbeat, and the bounds are obtained for the cases of known and unknown channel coefficients. In addition, a two-step suboptimal estimator is proposed, which is based on joint time-delay estimation followed by a least-squares approach. It is shown that the proposed estimator is asymptotically optimal under mild conditions. Simulation studies are performed to evaluate the lower bounds and performance of the proposed estimator for realistic system parameters. © 2007 IEEE.
机译:在本文中,通过脉冲无线电超宽带信号的联合估计呼吸和心跳速率来推导Cramer-Rao下界。对由于呼吸和心跳引起的位移函数采用通用模型,并在已知和未知通道系数的情况下获得界限。另外,提出了一种基于联合时延估计和最小二乘法的两步次优估计器。结果表明,所提出的估计量在温和条件下是渐近最优的。进行仿真研究以评估拟议估计量的下界和实际系统参数的性能。 ©2007 IEEE。

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  • 作者

    Gezici, S.; Ankan O.;

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  • 年度 2007
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  • 原文格式 PDF
  • 正文语种 English
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