Estimation and analysis of signal arrival time for UWB systems

Chin Der Wann*, Sheng Hsiung Hsu

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

20 Scopus citations

Abstract

In this paper, an improved MUSIC algorithm is presented for estimation of signal arrival time in impulse radio LTWB systems. An accurate estimate of signal arrival time is considered essential in time-based wireless and indoor location systems. The fine resolution of UWB signals provides potentially accurate ranging for indoor geolocation. However, the ambiguity caused by the irresolvable first arrival path may still yield an error in determining the true signal arrival time. To use the improved MUSIC technique in estimation of the shortest signal arrival time for UWB radio link, an experimental criterion of path resolvability is defined. For a two-multipath case, simulations are conducted. The results show that the improved MUSIC algorithm achieves better probability of multipath resolvability, and smaller variance of estimation errors than other MUSIC methods.

Original languageEnglish
Pages (from-to)3560-3564
Number of pages5
JournalIEEE Vehicular Technology Conference
Volume60
Issue number5
StatePublished - 2004
Externally publishedYes
Event2004 IEEE 60th Vehicular Technology Conference, VTC2004-Fall: Wireless Technologies for Global Security - Los Angeles, CA, United States
Duration: 26 09 200429 09 2004

Keywords

  • MUSIC algorithm
  • Signal arrival time
  • Time-of-arrival (TOA) estimation
  • UWB

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