Nonline-of-sight error mitigation in mobile location

The location of mobile terminals has received considerable attention in the recent years. The performance of mobile location systems is limited by errors primarily caused by nonline-of-sight (NLOS) propagation conditions. We investigate the NLOS error identification and correction techniques for mob...

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Bibliographic Details
Published in:IEEE transactions on wireless communications 2005-03, Vol.4 (2), p.560-573
Main Authors: Li Cong, Li Cong, Weihua Zhuang, Weihua Zhuang
Format: Article
Language:English
Subjects:
Angle of arrival (AOA)
Antenna measurements
Applied sciences
Equipments and installations
Error correction
Exact sciences and technology
Gaussian noise
mobile location
Mobile radiocommunication systems
Multiaccess communication
Noise measurement
nonline-of-sight (NLOS) propagation
Radiocommunications
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
Time difference of arrival
time difference of arrival (TDOA)
Time measurement
Transmission and modulation (techniques and equipments)
Wideband
wideband code-division multiple-access (CDMA) cellular systems
Wireless cellular systems
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Description
Summary:The location of mobile terminals has received considerable attention in the recent years. The performance of mobile location systems is limited by errors primarily caused by nonline-of-sight (NLOS) propagation conditions. We investigate the NLOS error identification and correction techniques for mobile user location in wireless cellular systems. Based on how much a priori knowledge of the NLOS error is available, two NLOS mitigation algorithms are proposed. Simulation results demonstrate that with the prior information database, the location estimate can be obtained with good accuracy even in severe NLOS propagation conditions.
ISSN:1536-1276
1558-2248
DOI:10.1109/TWC.2004.843040