Browse > Article

A Study on the Performance Improvement for UWB Ranging in Multipath Environments by Modified Linear FM Signals  

Lee Woo-Kyung (School of Electronics, Telecommunication and Computer Engineering, Hankuk Aviation University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.17, no.6, 2006 , pp. 587-596 More about this Journal
Abstract
Recently a new spectrum ruling has been proposed for UWB(Ultra-Wideband) communication applications. The new proposal is expected to reduce the usable UWB spectrum significantly and may cause to weaken the unique advantages of the UWB pulses such as high resolution synchronizations and robustness to the multipath effects. In this paper, we investigate the performance degradation caused by the reduced UWB spectrum. As a means to overcome the performance degradation, a modified discrete linear frequency modulation technique is proposed. We show that, when multipath components are present in the received signal, the proposed method exhibits superior performances in terms of pulse detection efficiency and range resolutions.
Keywords
UWB; Ranging; Signal Processing; Linear FM; Multipath;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Dajana Cassioli, Moe Z. Win, and Andreas F. Molisch, 'The ultra-wide bandwidth indoor channel: from statistical model to simulations', IEEE Journal on Selected Areas in Comm., vol. 20, no. 6, pp. 1247-1257, 2002   DOI   ScienceOn
2 Ian Oppermann, 'A technique for deriving sets of orthogonal sequences from binary parents which preserves auto-correlation properties', IEEE Communication Letters, vol. 6, no. 10, pp. 416-418, Oct. 2002   DOI   ScienceOn
3 G. R. Cooper, C. D. McGillem, Modern Communication and Spread Spectrum, McGraw Hill, pp. 23-28, 1986
4 Woo C. Chung, Dong S. Ha, 'An accurate UWB ranging for precision asset location', IEEE Conference on UWB, Oulu, Finland, pp. 383-393, 2003
5 N. Alsindi, K. Pahlavan, 'Performance of TOA estimation algorithms in different indoor multipath conditions', IEEE WCNC, Atlanta, pp. 495-500, 2004
6 Keisuke Doi, Takeshi Matsumura, and K. Mizutani, 'Ultra wideband ranging system using improved chirp waveform', IEEE UWB Conference, Zurich, Switzerland, pp. 207-210, 2005
7 J. Foerster, 'Channel Modelling Sub-committee; Final Report', IEEE P902.15-02/490r1-SG3a, Mar. 2003
8 Woo K. Lee, H. D. Griffiths, 'Development of modified polyphase P codes with optimum sidelobe characteristics', IEE Proc.-Radar Sonar Navig., vol. 151, no. 4, pp. 210-220, Aug. 2004   DOI   ScienceOn
9 F. J. Harris, 'On the use of windows for harmonic analysis with the discrete fourier transform', Proceeding of the IEEE, vol. 66, no. 1, pp. 51-80, Jan. 1978   DOI   ScienceOn
10 Z. N. Low, J. H. Cheng, C. L. Law, W. T. NG, and Y. J. Lee, 'Pulse detection algorithm for Lineof-Sight UWB ranging applications', IEEE Antennas and Wireless Propagation Letters, vol. 4, pp. 63-67, 2005   DOI   ScienceOn