Title :
Efficient uplink time difference of arrival mobile device localization in cellular networks
Author :
Mardeni, R. ; Anuar, Khairul ; Shahabi, Parviz ; Manesh, Mohsen Riahi
Author_Institution :
Fac. of Eng., Multimedia Univ., Cyberjaya, Malaysia
Abstract :
In this work, mobile station (MS) localization in cellular systems is considered based on uplink time difference of arrival (UTDOA) of MS signal at spatially separated base stations with known locations is presented. The UTDOA estimation is conducted using normalized least mean square (NLMS) based adaptive line enhancer (ALE) followed by a cross correlation. More precisely, the use of ALE-pre-filtered cross correlation is proposed in hyperbolic localization to improve the accuracy of UTDOA estimation for reducing the uncertainty in localizing the mobile station. Computer simulation results indicate that proposed ALE-UTDOA technique can achieve superior positioning accuracy than conventional cross correlation (CC) based method with range of 67%-75%.
Keywords :
cellular radio; correlation methods; direction-of-arrival estimation; filtering theory; least mean squares methods; mobile handsets; radio direction-finding; ALE-pre-filtering; CC based method; MS signal; NLMS; UTDOA estimation; adaptive line enhancer; cellular network; cross correlation method; efficient uplink time difference of arrival mobile device localization; hyperbolic localization; mobile station localization; normalized least mean square; spatially separated base station; Accuracy; Base stations; Correlation; Estimation; Mathematical model; Mobile communication; Wireless communication; ALE; UTDOA; position location;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2013 Asia-Pacific
Conference_Location :
Seoul
DOI :
10.1109/APMC.2013.6695042
