Paper Info
Title
An improved TDoA-based tracking algorithm in mobile-WiMAX systems
Abstract
In a wireless channel with a large delay spread, a detection probability of conventional TDoA (Time Difference of Arrival) positioning algorithms cannot satisfy the U.S. E-911 (Enhanced-911) standard. In this paper, we propose an improved TDoA-based tracking algorithm for mobile-WiMAX (Worldwide Interoperability for Microwave Access) systems. The position of a MS (Mobile Station) is estimated by the network-based TDoA location scheme when the MS is located in the GPS (Global Positioning System) shadow area. The proposed algorithm compares the estimated position of a current state to the previous states, for achieving high reliability. Simulation results show that the proposed algorithm can improve the detection probability about 10% points, compared to the conventional TDoA-only positioning algorithm in the ITU-R (International Telecommunication Union-Radiocommunication sector) micro-cell environment, using the Pedestrian-B channel model which has a large delay spread profile. The proposed scheme's improvement helps to satisfy the E-911 standard when utilizing information from three RASs (Radio Access Stations).
Year
DOI
Venue
2009
10.1109/PIMRC.2009.5450340
PIMRC
Keywords
Field
DocType
time difference-of-arrival positioning algorithms,network-based tdoa location scheme,detection probability,global positioning system,location,mobile station,gps,wimax,itu-r microcell environment,lbs,mobile-wimax systems,network reliability,pedestrian-b channel model,wireless channel,positioning,tdoa,wireless channels,position estimation,mobile radio,ofdma,radio access stations,improved tdoa-based tracking algorithm,mobile-wimax,u.s. e-911 standard,time-of-arrival estimation,e-911,probability,estimation,fading,wireless communication,awgn,satisfiability,time difference of arrival
Mobile radio,Wireless,Computer science,Mobile station,Delay spread,Computer network,Algorithm,Real-time computing,FDOA,WiMAX,Global Positioning System,Multilateration
Conference
ISBN
Citations 
PageRank 
978-1-4244-5123-4
2
0.39
References 
Authors
5
4
Name
Order
Citations
PageRank
Sanhae Kim1103.31
Jungwoo Lee21467156.34
Myungsik Yoo371388.21
Yoan Shin436858.41