Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
Wireless Communications & Mobile Computing - Special Issue: Ultrawideband for Wireless Communications
A linear programming approach to NLOS error mitigation in sensor networks
Proceedings of the 5th international conference on Information processing in sensor networks
Robust estimator for non-line-of-sight error mitigation in indoor localization
EURASIP Journal on Applied Signal Processing
Analysis of wireless geolocation in a non-line-of-sight environment
IEEE Transactions on Wireless Communications
Overview of radiolocation in CDMA cellular systems
IEEE Communications Magazine
The ultra-wide bandwidth indoor channel: from statistical model to simulations
IEEE Journal on Selected Areas in Communications
Characterization of ultra-wide bandwidth wireless indoor channels: a communication-theoretic view
IEEE Journal on Selected Areas in Communications
A new parameter for UWB indoor channel profile dentification
IEEE Transactions on Wireless Communications
A new low complexity NLOS identification approach based on UWB energy detection
RWS'09 Proceedings of the 4th international conference on Radio and wireless symposium
Range-based localization for UWB sensor networks in realistic environments
EURASIP Journal on Wireless Communications and Networking - Special issue on theoretical and algorithmic foundations of wireless ad hoc and sensor networks
LOS/NLOS detection for UWB signals: a comparative study using experimental data
ISWPC'10 Proceedings of the 5th IEEE international conference on Wireless pervasive computing
NLOS identification and mitigation for localization based on UWB experimental data
IEEE Journal on Selected Areas in Communications - Special issue on simple wireless sensor networking solutions
Fundamental limits and improved algorithms for linear least-squares wireless position estimation
Wireless Communications & Mobile Computing
Modelling ranging error of indoor TOA-based position system based on receive signal strength
International Journal of Sensor Networks
Journal of Signal Processing Systems
A Cooperative Localization Algorithm for UWB Indoor Sensor Networks
Wireless Personal Communications: An International Journal
Improved ultra wideband-based tracking of twin-receiver automated guided vehicles
Integrated Computer-Aided Engineering - Anniversary Volume: Celebrating 20 Years of Excellence
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Non-line-of-sight (NLOS) identification and mitigation carry significant importance in wireless localization systems. In this paper, we propose a novel NLOS identification technique based on the multipath channel statistics such as the kurtosis, the mean excess delay spread, and the root-mean-square delay spread. In particular, the IEEE 802.15.4a ultrawideband channel models are used as examples and the above statistics are found to be well modeled by log-normal random variables. Subsequently, a joint likelihood ratio test is developed for line-of-sight (LOS) or NLOS identification. Three different weighted least-squares (WLSs) localization techniques that exploit the statistics of multipath components (MPCs) are analyzed. The basic idea behind the proposed WLS approaches is that smaller weights are given to the measurements which are likely to be biased (based on the MPC information), as opposed to variance-based WLS techniques in the literature. Accuracy gains with respect to the conventional least-squares algorithm are demonstrated via Monte-Carlo simulations and verified by theoretical derivations.