Paper Info
Title
MGALE: a modified geometry-assisted location estimation algorithm reducing location estimation error in 2D case under NLOS environments
Abstract
Positioning of a Mobile Station (MS) is mandatory for implementing emergency call services and providing location-based services. The major problems facing accurate location estimation of the MS are Non-Line-of-Sight (NLOS) propagation and hearability. Thus several location algorithms focusing on NLOS mitigation and addressing hearability problem have been studied. Among these, Geometry-Assisted Location Estimation (GALE) algorithm based on three TOA measurements can estimate the 2D location of the MS with reasonable precision. However 2D GALE scheme fails to meet Federal Communication commission (FCC) requirement for phase 2. Thus, in this paper, we have proposed a modification over 2D GALE algorithm with three TOA measurements to meet the FCC target while preserving the computational efficiency of GALE scheme. Our proposed algorithm considers the geometry of the TOA measurement circles rather than the standard deviation of the TOA measurements. Simulation results show that our algorithm provides better location accuracy compared to 2D GALE algorithm.
Year
DOI
Venue
2009
10.1007/978-3-642-04385-7_1
MELT
Keywords
Field
DocType
better location accuracy,gale scheme,location estimation error,nlos mitigation,accurate location estimation,proposed algorithm,hearability problem,modified geometry-assisted location estimation,toa measurement,toa measurement circle,fcc target,gale algorithm,nlos environment,non line of sight,location based service,mobile station,standard deviation,base station,time of arrival
Non-line-of-sight propagation,Near-far problem,Mobile station,Algorithm,Geometry,Geography,Standard deviation
Conference
Volume
ISSN
ISBN
5801
0302-9743
3-642-04378-X
Citations 
PageRank 
References 
0
0.34
8
Authors
2
Name
Order
Citations
PageRank
Pampa Sadhukhan1162.99
Pradip K. Das25011.56