DocumentCode :
693737
Title :
Performance analysis of an indoor WLAN location estimation
Author :
Naik, Udaykumar ; Bapat, V.N.
Author_Institution :
K.L.E. Soc.´s Coll. of Eng. & Technol., Belgaum, India
fYear :
2013
fDate :
18-19 Oct. 2013
Firstpage :
524
Lastpage :
526
Abstract :
The location estimation techniques based on 802.11 b/g wireless local area network (WLAN) have received significant attention in recent years. In this paper we report Cramer -Rao Lower bounds (CRLB) for WLAN user location estimation in a computer laboratory. The CRLBs are computed by using real time radio signal strength measurements performed by user´s mobile terminal. This distance error lower bound provides the reference for the accuracy of node localization. The numerical results shows that the mean location error is 1.30 meters and is better as compared to the localization technique using linear least square estimate. The experimental results also demonstrate that the location accuracy improves for higher values of path loss exponent.
Keywords :
indoor radio; least squares approximations; wireless LAN; 802.11 b-g wireless local area network; CRLB; Cramer-Rao lower bounds; computer laboratory; distance error lower bound; indooR WLAN location estimation; linear least square estimation; mobile terminal; node localization; path loss exponent; real time radio signal strength measurement; CRLB; Localisation error; Path loss exponent; WLAN;
fLanguage :
English
Publisher :
iet
Conference_Titel :
Computational Intelligence and Information Technology, 2013. CIIT 2013. Third International Conference on
Conference_Location :
Mumbai
Type :
conf
DOI :
10.1049/cp.2013.2640
Filename :
6950924
Link To Document :
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