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首页> 外文会议>2016 IEEE International Engineering Summit, II Cumbre Internacional de las Ingenierias >Space-time diversity for NLOS mitigation in TDOA-based positioning systems
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Space-time diversity for NLOS mitigation in TDOA-based positioning systems

机译：基于TDOA的定位系统中用于缓解NLOS的时空分集

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This paper studies the potential impact of using space-time information in the mitigation of the Non-Line-Of-Sight condition in mobile subscriber's positioning systems. First of all, this work discusses the positioning problem based on measures of Time Differences Of Arrival departing from a more exact characterization of the signal statistics and including some geometrical restrictions to achieve an improved accurate. Furthermore, a novel approach that integrates signal propagation characteristics to information provided by a suitable timing estimation model based on Cramer Rao Bound for a Rayleigh-fading channel, when antenna arrays are used at the receiver and when a set of channel vector estimates are available, has been introduced to study the positive benefits of space-time diversity. These approaches are evaluated within a realistic simulation scenario.
机译：本文研究了使用时空信息缓解移动用户定位系统中的非视线状况的潜在影响。首先，这项工作讨论了基于到达时间差的度量的定位问题，这些度量偏离了信号统计的更精确的表征，并且包括一些几何限制以提高精度。此外，一种新颖的方法是在接收器使用天线阵列并且有一组信道矢量估计可用时，将信号传播特性与基于基于Cramer Rao Bound的合适定时估计模型提供的信息集成到Rayleigh衰落信道，已经介绍了研究时空多样性的积极好处。这些方法是在现实的模拟方案中进行评估的。

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