Browse > Article

Non-coherent TOA Estimation Method based on IR-UWB in Multiple SOP Environments  

Park, Woon-Yong (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Park, Cheol-Ung (숭실대학교 정보통신공학과)
Choi, Sung-Soo (한국전기연구원 융합기술연구단)
Lee, Won-Cheol (숭실대학교 정보통신전자공학부 통신 및 신호처리연구실)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.32, no.11A, 2007 , pp. 1086-1095 More about this Journal
Abstract
This paper proposes a novel non-coherent TOA estimation scheme using multiple correlation process on the existence of multiple simultaneously operating piconets (SOPs). Impulse radio-ultra wideband (IR-UWB) based on direct sequence spread spectrum (DSSS) using Gold sequence is employed in order to discriminate each piconet. In order to enhance the characteristic of correlation, this paper presents the method of multiple mask operation (MMO). The time of arrival (TOA) of direct line of sight (DLOS) path is estimated via two step coarse/fine timing detection. To verify the performance of proposed scheme, two distinct channel models approved by IEEE 802.15.4a Task Group (TG) are considered. According to the simulation results, it could conclude that the proposed scheme have performed better performance than the conventional method well even in densed indoor multi-path environment as well as in the existence of multiple SOPs.
Keywords
UWB ranging; TOA estimation; Noncoherent receiver; SOP; Gold code;
Citations & Related Records
연도 인용수 순위
  • Reference
1 X. Li and K. Pahlavan, 'Super-resolution TOA estimation with diversity for indoor geolocation', IEEE Transactions on Wireless Communications, Vol. 1, no. 3, pp. 224-234, Jan 2004
2 K. Pahlavan, X. Li, and J. Makela, 'Indoor geolocation science and technology,' IEEE Communications Magazine, vol. 40, no. 2, pp. 112-118, Feb. 2002
3 F. Chin, Z. Wanjun and C.C. Ko, 'System performance of IEEE 802.15.4 low rate wireless PAN using UWB as alternate-PHY layer,' Proc. IEEE Conference on Personal, Indoor and Mobile Radio Communications (PIMRC 2003), vol. 1, pp. 487-491, Sept. 2003
4 J.Y. Lee and R.A. Scholtz, 'Ranging in a dense multipath environment using an UWB radio link,' Proc. IEEE Journal on Selected Areas in Communications, vol. 20, no. 9, December 2002
5 IEEE 802.15.4a standard, 15-04-0581-r07
6 R.J. Fontana and S.J. Gunderson, 'Ultra-wideband precision asset location system,' Proc. IEEE Conference on UWB Systems and Technologies (UWBST), pp. 147-150, May 2002
7 J.C. Adams, W. Gregorwich, L. Capots and D. Liccardo, 'Ultra-wideband for navigation and communications,' Proc. IEEE Conference on Aerospace, vol. 2, pp. 785-792, Mar. 2001
8 W.C. Chung and D.S. Ha, 'An accurate ultra wideband (UWB) ranging for precision asset location,' Proc. IEEE Conference on Ultra Wideband Systems and Technologies (UWBST), 16-19, pp. 389-393, Nov. 2003
9 K. Yu and I. Oppermann, 'Performance of UWB position estimation based on time-of-arrival measurements,' in Proc. IEEE Conf. Ultrawideband Syst. Technol. (UWBST), Kyoto, Japan, pp. 400-404, May 2004
10 Lei, F. Chin, and Y.-S. Kwok, 'UWB ranging with energy detection using ternary preamble sequences,'Proc. IEEE Wireless Communications and Networking Conf., vol. 2, pp. 872–877, April 2006
11 IEEE 802.15-TG4a, Channel Modeling Sub-Committee, 'Channel modeling sub-committee report final,' available at http://ieee802.org/ 15/pub/TG4a.html
12 IEEE 802.15-TG4a, Precision Ranging Subcommittee, 'Ranging subcommittee final report,' available at http://ieee802.org/15/pub/TG4a.html
13 I. Nygren and M. Jansson, 'Robust terrain navigation with the correlation method for high position accuracy,' Proc. IEEE Conference on OCEANS 2003, vol. 3, pp. 1269-1277, May 2003
14 J. R. Foerster, 'The performance of a direct sequence spread ultra wideband system in the presence of multipath, narrowband interference and multiuser interference,' Proc. IEEE Conference on UWB Systems and Technologies (UWBST), pp. 87-91, May 2002