Home // ICWMC 2012, The Eighth International Conference on Wireless and Mobile Communications // View article

Cramer-Rao Lower Bound on RF Pattern Matching Method with Velocity in LTE System

Authors:
Dengkun Xiao
Jiangbo Zhu
Jie Cui
Xinlong Luo

Keywords: Cramer-Rao Lower Bound; RFPM

Abstract:
The Radio Frequency Pattern Matching (RFPM) method is an useful solution for UE positioning, and it is not sensitive to the channel states and multipath impact compared with the time-of-arrival schemes. With the help of drive test or other estimation algorithms, the RF pattern database can be constructed efficiently. The positioning accuracy of RFPM is tightly related with the member of measurement elements for pattern matching. In this paper, the UE velocity is adopted in the RFPM positioning to improve the positioning accuracy, and the Cramer-Rao lower bound is used for accuracy evaluation and comparison. From the simulation results the positioning accuracy can be improved remarkably when the UE velocity is considered in addtion to the reference signal received power (RSRP), timing advance (TA) and reference signal time difference (RSTD) in the pattern matching.

Pages: 94 to 97

Copyright: Copyright (c) IARIA, 2012

Publication date: June 24, 2012

Published in: conference

ISSN: 2308-4219

ISBN: 978-1-61208-203-5

Location: Venice, Italy

Dates: from June 24, 2012 to June 29, 2012