Ranking of TOA Measurements Based on the Estimate of the NLOS Propagation Contribution in a Wireless Location System

被引：0
作者：
Santiago Mazuelas
Francisco A. Lago
Patricia Fernandez
Alfonso Bahillo
Juan Blas
Ruben M. Lorenzo
Evaristo J. Abril
机构：
[1] Edificio Solar,CEDETEL (Center for the Development of Telecommunications)
[2] Parque Tecnologico de Boecillo,Department of Signal Theory and Communications and Telematic Engineering
[3] University of Valladolid,undefined
来源：
Wireless Personal Communications | 2010年 / 53卷
关键词：
Geolocation; NLOS; TOA;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
The presence of non-line-of-sight (NLOS) propagation is a key issue that limits the accuracy of wireless location systems. The lack of direct sight causes the measurements obtained by location systems to be so unpredictable that they can produce high inaccuracies in the estimation of the mobile station location. In this paper we propose a novel technique to improve location reliability and accuracy in cases where NLOS propagation is present. For that, in registers of time of arrival (TOA) measurements taken from each base station (BS) in view, we detect the presence of NLOS propagation and estimate the ratio of the measurements coming from NLOS propagation. With this estimate we can assess how much is NLOS propagation affecting the measurements taken from each BS and then we can identify the best measurements and BSs to achieve the highest accuracies in location.
引用
收藏
页码：35 / 52
页数：17
相关论文
共 26 条
  • [1] Soliman S.S.(2002)Geolocation technologies and applications for third generation wireless Wireless Communications and Mobile Computing 2 229-251
  • [2] Wheatley C.E.(2005)Mobile positioning using wireless networks IEEE Signal Processing Magazine 22 41-53
  • [3] Gustafsson F.(2006)Time-of-arrival based localization under NLOS conditions IEEE Transactions on Vehicular Technology 55 17-24
  • [4] Gunnarsson F.(2004)Least squares algorithms for time-of-arrival-based mobile location IEEE Transactions on Signal Processing 52 1121-1130
  • [5] Chan Y.-T.(2003)Mobile location estimator with NLOS mitigation using Kalman filtering IEEE Wireless Communications and Networking 3 1969-1973
  • [6] Tsui W.-y.(2006)Analysis of wireless geolocation in a non-line-of-sight environment IEEE Transactions on Wireless communications 5 672-681
  • [7] So H.-C.(2006)On time-of arrival positioning in a multipath environment IEEE Transactions on Vehicular Technology 55 1516-1526
  • [8] Ching P.-c.(2003)Location of mobile terminals using time measurements and survey points IEEE Transactions on Vehicular Technology 52 999-1011
  • [9] Cheung K.W.(2005)Nonline-of-sight error mitigation in mobile location IEEE Transactions on Wireless Communications 4 560-573
  • [10] So H.C.(undefined)undefined undefined undefined undefined-undefined
123