Positioning and navigation with ultra-wideband signals

Huilin Xu, Liuqing Yang, Y. T. Jade Morton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The Cramer-Rao Bound (CRB) analysis shows that ultra-wideband (UWB) can provide high resolution timing and positioning, thanks to its huge bandwidth. However, in practical implementation, the CRB can not be achieved because the perfect channel information may not be available at the receiver. In this paper, we investigate how to exploit the huge bandwidth for high resolution ranging in practical scenarios. We will compare the coherent and noncoherent combining of the multi-band signal for ranging. The comparisons show that a high timing resolution can be achieved by combining the channel information from multiple sub-bands in a coherent manner. However, when the channel is independent for different sub-bands, the multi-band signals can only be combined in a noncoherent manner to improve the mistiming performance. In particular, the slope of the probability of mis-timing curve becomes steeper as the number of sub-bands increases. This is known in communications as diversity. Simulations are also carried out to corroborate our theoretical analysis.

Original languageEnglish (US)
Title of host publication20th International Technical Meeting of the Satellite Division of The Institute of Navigation 2007, ION GNSS 2007
Pages1861-1866
Number of pages6
StatePublished - 2007
Externally publishedYes
Event20th International Technical Meeting of the Satellite Division of The Institute of Navigation 2007 ION GNSS 2007 - Fort Worth, TX, United States
Duration: Sep 25 2007Sep 28 2007

Publication series

Name20th International Technical Meeting of the Satellite Division of The Institute of Navigation 2007 ION GNSS 2007
Volume2

Conference

Conference20th International Technical Meeting of the Satellite Division of The Institute of Navigation 2007 ION GNSS 2007
CountryUnited States
CityFort Worth, TX
Period9/25/079/28/07

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