Title :
Improving ranging accuracy by two-step TOA estimation for UWB radio
Author :
Fukao, Chizu ; Sasaki, Masaya ; Ohno, Kohei ; Itami, Makoto
Author_Institution :
Dept. Appl. Electron., Tokyo Univ. of Sci., Noda
Abstract :
This paper discusses a ranging technique of Ultra Wideband (UWB) system. The Energy Detection (ED) and Matched Filter (MF) are common techniques as UWB pulse detection methods in TOA (Time of Arrival) ranging system. The two-step TOA estimation is combined the ED and the MF. The two-step detection enables higher ranging accuracy than the ED with the simpler receiver structure than the MF. In this paper, the modified two-step estimation is investigated. A dual window and a sampling interval compensation technique are proposed in the ED and the MF, respectively. The performances of MAE (Mean Absolute Error) are improved in the IEEE802.15.4a system.
Keywords :
compensation; matched filters; radio networks; ultra wideband communication; UWB radio; dual window; energy detection; matched filter; mean absolute error; ranging accuracy; sampling interval compensation technique; time of arrival; two-step TOA estimation; ultra wideband system; Communication systems; Information theory; Matched filters; Physical layer; Sampling methods; Signal sampling; Spread spectrum communication; Time of arrival estimation; Ultra wideband technology; Wireless personal area networks;
Conference_Titel :
Information Theory and Its Applications, 2008. ISITA 2008. International Symposium on
Conference_Location :
Auckland
Print_ISBN :
978-1-4244-2068-1
Electronic_ISBN :
978-1-4244-2069-8
DOI :
10.1109/ISITA.2008.4895504
