Accurate Wireless Location/Communication System With 22-cm Error Using UWB-IR

Author

Mizugaki, K. ; ujiwara, R. ; Nakagawa, T. ; Ono, G. ; Norimatsu, T. ; Terada, T. ; Miyazaki, M. ; Ogata, Y. ; Maeki, A. ; Kobayashi, S. ; Koshizuka, N. ; Sakamura, K.

Author_Institution

Central Res. Lab., Hitachi Ltd., Tokyo

fYear

2007

fDate

9-11 Jan. 2007

Firstpage

455

Lastpage

458

Abstract

We propose a high-accuracy, low-cost UWB-IR wireless location system based on the quasi TDOA method. The system consists of anchor nodes, a synch node and a location server. The anchor nodes synchronize each other as regulated by the synch node so that synchronization is always precise in the location process. To make the anchor node simple, the location system uses acquisition and tracking functions that can measure the time when a signal is received as accurately as pulse signal width. In addition, we performed a wireless location experiment indoors and the average error of the location measurement was 22-cm

Keywords

time-of-arrival estimation; ultra wideband communication; wireless sensor networks; 22 cm; UWB-IR; anchor nodes; location server; pulse signal width; quasi TDOA method; synch node; wireless location-communication system; Laboratories; Network servers; Performance evaluation; Position measurement; Pulse measurements; Space vector pulse width modulation; Temperature sensors; Time measurement; Wireless communication; Wireless sensor networks; Location; Position measurement; Ultra - Wideband; Wireless sensor network;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio and Wireless Symposium, 2007 IEEE

Conference_Location

Long Beach, CA

Print_ISBN

1-4244-0445-2

Electronic_ISBN

1-4244-0445-2

Type

conf

DOI

10.1109/RWS.2007.351866

Filename

4160749