Title :
Propagation channel impact on LTE positioning accuracy: A study based on real measurements of observed time difference of arrival
Author :
Medbo, J. ; Siomina, I. ; Kangas, A. ; Furuskog, J.
Author_Institution :
Ericsson Res., Ericsson AB, Stockholm, Sweden
Abstract :
The goal with this work is to evaluate the performance of the observed time difference of arrival (OTDOA) positioning method using real measured channel data in a macro-cellular urban LTE scenario. This has been made possible using a highly accurate channel sounder developed within Ericsson Research. A wideband (20 MHz bandwidth) measurement campaign at 2.66 GHz was performed using three separate base station sites in a realistic deployment. One main conclusion is that the measured channel allows a positioning accuracy of 20 m and 63 m at the median and 95% level respectively. This is a very encouraging result since the FCC requirements are fulfilled with a safe margin in this urban scenario.
Keywords :
broadband networks; cellular radio; direction-of-arrival estimation; time-of-arrival estimation; Ericsson Research; FCC requirements; LTE positioning accuracy; base station sites; channel data; channel sounder; macro-cellular urban LTE scenario; observed time difference of arrival positioning method; propagation channel impact; wideband measurement campaign; Base stations; Clocks; Downlink; Extraterrestrial measurements; FCC; Global Positioning System; Position measurement; Time difference of arrival; Time measurement; Timing;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on
Conference_Location :
Tokyo
Print_ISBN :
978-1-4244-5122-7
Electronic_ISBN :
978-1-4244-5123-4
DOI :
10.1109/PIMRC.2009.5450144
