Browse > Article

A Time-of-arrival Estimation Technique for Ultrawide Band Indoor Wireless Localization System  

Lee, Yong-Up (한림대학교 전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.34, no.8C, 2009 , pp. 814-821 More about this Journal
Abstract
In an ultrawide band (UWB) indoor wireless localization, time of arrival (TOA) parameter estimation techniques have some difficulties in acquiring a reasonable TOA estimate because of the clustered multipath components overlapping or random time intervals mainly due to non line-of-sight (NLOS) environment. In order to solve that problem and achieve an excellent UWB indoor wireless localization, we propose a UWB signal model and a robust TOA parameter estimation technique that has little effect on the clustered problems unlike the conventional technique. Through simulation studies, the validity of the proposed model and the TOA estimation technique are examined. The performance of estimation error is also analyzed.
Keywords
Wireless localization; Position location; Ultrawide band (UWB); Indoor wireless channel; Parameter estimation; Random time interval; Time-of-arrival (TOA); Clustered multlpath signals; Performance analysis; MUSIC technique;
Citations & Related Records
연도 인용수 순위
  • Reference
1 N. Czink, M. Herdin, H. Ozcelik, and E. Bonek, 'Number of multipath clusters in indoor MIMO propagation environments,' Electronics Letter, Vol.40, No.23, pp.11-12, Nov., 2004   DOI   ScienceOn
2 X, Li and K. Pahlavan, 'Super-resolution TOA estimation with diversity for indoor geolocation,' IEEE Tr. Wireless Comm., Vol.3, No.1, pp. 224-234, Jan., 2004   DOI   ScienceOn
3 J. Caffery, Jr, Wireless Location in CDMA Cellular Radio Systems. Boston, MA; Kluwer, 2000.
4 R.O. Schmidt, 'Multiple emitter location and signal parameter estimation,' IEEE Tr. Ant. Prop. vol. AP-34, pp. 276-280, Mar., 1986   DOI
5 C. Wann and S. Hsu, 'Estimation and analysis of signal arrival time for UWB system,' Proc. IEEE VTC, Vol.5, pp.3560-3564, Sept. 2004
6 C. Carbonelli and Urbashi Mitra, 'Clustered channel estimation for UWB signals,' Proc. IEEE ICC, pp.2432-2437, Paris, France, June, 2004
7 A.H. Sayed, A. Tarighat, and N. Khajehnouri,'Network-based Wireless Location,' IEEE Sig. Proc. Mag., Vol.22, pp.24-40, Jul., 2005   DOI   ScienceOn
8 S. Gezici, Z. Tian, G.B. Giannakis, H. Kobayashi, A.F. Molish, H.V. Poor, and Z. Sahinoglu, 'Localization via Ultra-wide band Radios,' IEEE Sig. Proc. Mag., Vol.22, pp.70-84, Jul., 2005   DOI   ScienceOn
9 J. Choi, I. Song, S. Kim, and Y.K. Jhee, 'A generalized null-spectrum for direction of arrival estimation,' IEEE Tr. Sig. Process., Vol.42, pp.462-466, Feb., 1994   DOI   ScienceOn