WUB-IP: A High-Precision UWB Positioning Scheme for Indoor Multiuser Applications

WUB-IP: A High-Precision UWB Positioning Scheme for Indoor Multiuser Applications
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WUB-IP:适用于室内多用户应用的高精度 UWB 定位方案

DOI:
10.1109/jsyst.2017.2766690
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发表时间:
2019-03
影响因子:
4.4
通讯作者:
Yunfei Chen
Yunfei Chen
中科院分区:
计算机科学2区
文献类型:
--
作者:
Zhendong Yin;Xu jiang;Zhutian Yang;Nan Zhao;Yunfei Chen

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高精度定位是室内导航的重要组成部分,基于超宽带(UWB)的测距系统可以实现高精度定位。近年来,在密集多径和非视距(NLOS)条件下的精确定位的解决方案吸引了很多关注。另一方面,预计在不久的将来,用于多用户UWB定位应用的波形分多址(WDMA)技术将是不可或缺的。在这方面,本文研究了一种基于WDMA-UWB的定位方案,以提高多用户应用中的定位精度。根据室内定位的实际需求,提出了一种新的室内定位方案,称为基于WDMA-UWB的室内定位(WUB-IP)。该方案采用WDMA进行多址接入,并利用基于熵的方法进行到达时间估计。此外,转移学习方法被用来减轻测距误差在NLOS条件下,以提高定位精度在NLOS条件下。系统级仿真结果表明,该方案提高了室内定位多用户应用的性能。
High-precision positioning scheme, an important part of indoor navigation, can be implemented using an ultra-wideband (UWB) based ranging system. Recently, solutions for precise positioning in dense multipath and non-line-of-sight (NLOS) conditions have attracted a lot of attentions. On the other hand, it is expected that waveform division multiple access (WDMA) technology for multiuser UWB positioning applications will be indispensable in the near future. In this regard, a WDMA-UWB-based positioning scheme is investigated in this paper, to enhance the positioning accuracy in multiuser applications. In accordance with practical requirements of indoor positioning, we propose a new indoor positioning scheme, termed as WDMA-UWB-based indoor positioning (WUB-IP). This scheme adopts WDMA for multiple access, and utilizes an entropy-based approach for the time of arrival estimation. Moreover, a transfer learning approach is used to mitigate the ranging error in NLOS conditions, in order to improve the positioning accuracy in NLOS conditions. System-level simulations demonstrate that the proposed scheme enhances the performance of indoor positioning for multiuser applications.
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