Title :
A TOA-based location algorithm reducing the errors due to non-line-of-sight (NLOS) propagation
Author :
Wang, Xin ; Wang, Zongxin ; O´Dea, Bob
Author_Institution :
Dept. of Commun. Sci. & Eng., Fudan Univ., Shanghai, China
fDate :
1/1/2003 12:00:00 AM
Abstract :
An effective location algorithm, which considers non-line-of-sight (NLOS) propagation, is presented. By using a new variable to replace the square term, the problem becomes a mathematical programming problem, and then the NLOS propagation´s effect can be evaluated. Compared with other methods, the proposed algorithm has high accuracy.
Keywords :
cellular radio; maximum likelihood estimation; radio direction-finding; radio links; radiowave propagation; MLE; NLOS propagation; TOA-based location algorithm; cellular wireless location systems; error reduction; high accuracy algorithm; mathematical programming; mathematical programming problem; maximum-likelihood estimation; nonline-of-sight propagation; Cities and towns; Degradation; Error analysis; Inference algorithms; Interference; Mathematical programming; Maximum likelihood estimation; Propagation delay; Time difference of arrival; Time measurement;
Journal_Title :
Vehicular Technology, IEEE Transactions on
DOI :
10.1109/TVT.2002.807158
