Title :
Positioning accuracy when tracking UMTS mobiles in delay and angular dispersive channels
Author :
Vidal, Josep ; Nájar, Montse ; Cabrera, Marga ; Jativa, René
Author_Institution :
Dept. de Teoria del Senyal i Comunicacions, Univ. Politecnica de Catalunya, Barcelona, Spain
Abstract :
A potentiality of the location problem in wireless networks that has not been explored enough is the mobility of the user equipment. The use of a Kalman tracker helps in reducing the variability of the positioning by optimally averaging in time. We compare the location accuracy obtained in comparison to the least-square solution with no tracking. The performance comparison is done in a UMTS scenario, using uplink and downlink measurements in realistic propagation conditions
Keywords :
Kalman filters; cellular radio; delays; dispersive channels; tracking filters; Kalman tracker; UMTS mobile tracking; angular dispersive channels; delay; downlink measurements; least-square solution; positioning accuracy; uplink measurements; 3G mobile communication; Delay effects; Delay estimation; Direction of arrival estimation; Dispersion; Goniometers; Intelligent networks; Kalman filters; Position measurement; Time measurement;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944066
