Title :
WLAN Location Determination Systems
Author :
Chantanetra, Soontorn ; Sangworasilp, Manas ; Phas, Pattarapong
Author_Institution :
Fac. of Eng., King Mongkut´´s Inst. of Technol. Ladkrabang, Bangkok
Abstract :
This paper presents method to identify the users´ locations for indoor-users using wireless network devices. The method can specify wireless LAN users´ positions through wireless device drivers, the same methods as Global Position System (GPS) tracking ones, based on Microsoftreg Windowsreg driver development kit (DDK). The program developed by Visual C++. By using presented log-likelihood ratio (LLR) combined with geometry method, the error in distance of location tracking is approximated only 0.75-1.25 meters. The experiment provides a good result, faster tracking as well as real time approach compared with another method (Bahl and Padmanabhan, 2000) and (Sangwonlasilp, 2006)
Keywords :
C++ language; device drivers; geometry; maximum likelihood detection; wireless LAN; 0.75 to 1.25 m; Global Position System tracking; Microsoftreg Windowsreg driver development kit; Visual C++; WLAN; geometry method; location determination systems; location tracking; log-likelihood ratio; wireless device drivers; wireless network devices; Computer networks; Databases; Euclidean distance; Geometry; Global Positioning System; Physics computing; Radar tracking; Signal design; Wireless LAN; Wireless networks; log-likelihood ratio(LLR); user locate; wireless land(WLAN);
Conference_Titel :
Circuits and Systems, 2006. APCCAS 2006. IEEE Asia Pacific Conference on
Conference_Location :
Singapore
Print_ISBN :
1-4244-0387-1
DOI :
10.1109/APCCAS.2006.342427
