Enhanced location estimation with the virtual base stations in wireless location systems

Chao Lin Chen*, Kai-Ten Feng

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

12 Scopus citations

Abstract

Mobile location estimation has attracted a significant amount of attention in recent years. The network-based location estimation schemes have been widely adopted based on the radio signals between the mobile device and the base stations. The two-step Least Square (LS) method has been studied in related research to provide efficient location estimation of the mobile devices. However, the algorithm may results in inaccurate location estimation under (i) the existence of the Non-Line-Of-Sight (NLOS) errors and (ii) poor Geometric Dilution of Precision (GDOP) circumstances. A location estimation algorithm with the Virtual Base Stations (VBS) is proposed in this paper by considering the geometric layouts between the mobile device and its associated base stations. In order to enhance the precision of the location estimate, the VBS scheme is designed to incorporate the virtual base stations and the related geometric constraints within the formulation of the two-step LS method. The proposed VBS scheme can both preserve the computational efficiency from the two-step LS algorithm and obtain precise location estimation under poor GDOP and NLOS environments. Numerical results demonstrate that the proposed VBS algorithm can achieve better accuracy, comparing with other existing schemes, in mobile location estimation.

Original languageEnglish
Title of host publication2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring - Proceedings
Pages603-607
Number of pages5
DOIs
StatePublished - 1 Dec 2006
Event2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring - Melbourne, Australia
Duration: 7 May 200610 Jul 2006

Publication series

NameIEEE Vehicular Technology Conference
Volume2
ISSN (Print)1550-2252

Conference

Conference2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring
CountryAustralia
CityMelbourne
Period7/05/0610/07/06

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  • Cite this

    Chen, C. L., & Feng, K-T. (2006). Enhanced location estimation with the virtual base stations in wireless location systems. In 2006 IEEE 63rd Vehicular Technology Conference, VTC 2006-Spring - Proceedings (pp. 603-607). [1682895] (IEEE Vehicular Technology Conference; Vol. 2). https://doi.org/10.1109/VETECS.2004.1388899