Proceedings ArticleDOI
NLOS detection algorithms for Ultra-Wideband localization
J. Schroeder,S. Galler,Kyandoghere Kyamakya,K. Jobmann +3 more
- pp 159-166
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TLDR
A classification of the algorithms proposed of the UWB and mobile phone community and one novel method based on the signal power variation is suggested, which is strived to be as independent of the system and environment as possible.Abstract:
Non Line of Sight (NLOS) channels are one of the major drawbacks for accurate ranging and localization with Ultra-Wideband (UWB) technology. Whereas several proposals exist to detect these situations, a comprehensive overview, investigation and testing of these methods has to the authors' knowledge not yet been prepared. This paper tries to fill this gap with a classification of the algorithms proposed of the UWB and mobile phone community. In addition, one novel method based on the signal power variation is suggested. Afterwards, the methods are evaluated regarding their practicability for real UWB localization systems, which excludes some of them from further investigation. For the remaining algorithms thresholds are proposed, which are strived to be as independent of the system and environment as possible. Finally, the NLOS detection algorithms are tested and compared with both an UWB simulation environment and an UWB localization test bed.read more
Citations
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Journal ArticleDOI
NLOS identification and mitigation for localization based on UWB experimental data
TL;DR: This work performs an extensive indoor measurement campaign with FCC-compliant UWB radios to quantify the effect of non-line-of-sight (NLOS) propagation, and develops classification and regression algorithms based on machine learning techniques capable of assessing whether a signal was transmitted in LOS or NLOS conditions; and reducing ranging error caused byNLOS conditions.
Journal ArticleDOI
A Machine Learning Approach to Ranging Error Mitigation for UWB Localization
TL;DR: This work presents a novel approach to mitigate ranging errors directly in the physical layer, and applies two classes of non-parametric regressors to form an estimate of the ranging error.
Journal ArticleDOI
Network Experimentation for Cooperative Localization
TL;DR: This paper introduces the notion of network experimentation and proposes an experimentation methodology particularly suited for cooperative wireless networks, performed extensive measurement campaigns and compare various cooperative localization techniques under a common setting.
Journal ArticleDOI
A Novel NLOS Mitigation Algorithm for UWB Localization in Harsh Indoor Environments
TL;DR: This paper proposes a less environment-dependent and a priori knowledge-independent NLOS identification and mitigation method for ranging which is able to determine the specific NLOS channel and an equality constrained Taylor series robust least squares technique is proposed to suppress residual NLOS range errors by introducing robustness to Taylor series least squares method.
Journal ArticleDOI
Survey of NLOS identification and error mitigation problems in UWB-based positioning algorithms for dense environments
TL;DR: In this survey, the currently available ultra-wideband-based non-line-of-sight (NLOS) identification and error mitigation methods are presented and they are classified into several categories and their comparison is presented in two tables.
References
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Book
Wireless Communications: Principles and Practice
TL;DR: WireWireless Communications: Principles and Practice, Second Edition is the definitive modern text for wireless communications technology and system design as discussed by the authors, which covers the fundamental issues impacting all wireless networks and reviews virtually every important new wireless standard and technological development, offering especially comprehensive coverage of the 3G systems and wireless local area networks (WLANs).
Dynamic Source Routing in Ad Hoc Wireless Networks.
David B. Johnson,David A. Maltz +1 more
TL;DR: In this article, the authors present a protocol for routing in ad hoc networks that uses dynamic source routing, which adapts quickly to routing changes when host movement is frequent, yet requires little or no overhead during periods in which hosts move less frequently.
Book ChapterDOI
Dynamic Source Routing in Ad Hoc Wireless Networks
David B. Johnson,David A. Maltz +1 more
TL;DR: This paper presents a protocol for routing in ad hoc networks that uses dynamic source routing that adapts quickly to routing changes when host movement is frequent, yet requires little or no overhead during periods in which hosts move less frequently.
Journal ArticleDOI
Ranging in a dense multipath environment using an UWB radio link
Joon-Yong Lee,Robert A. Scholtz +1 more
TL;DR: A time-of-arrival (ToA)-based ranging scheme using an ultra-wideband (UWB) radio link is proposed, which implements a search algorithm for the detection of a direct path signal in the presence of dense multipath, utilizing generalized maximum-likelihood (GML) estimation.
Book
UWB theory and applications
TL;DR: This paper presents UWB Channel Models, a Hierarchical Model for Modulation Schemes of Receiver Structures, and Integrated Circuit Topologies, which describe the construction of receiver structures and the role of antennas in this system.
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