DocumentCode
79728
Title
Cramer-Rao Bound for Clock Drift in UWB Ranging Systems
Author
D´Amico, Antonio A. ; Mengali, U. ; Taponecco, Lorenzo
Author_Institution
Dept. of Inf. Eng., Univ. of Pisa, Pisa, Italy
Volume
2
Issue
6
fYear
2013
fDate
Dec-13
Firstpage
591
Lastpage
594
Abstract
This correspondence computes the Cramer-Rao lower bound on the variance of frequency drift estimates in oscillators for UWB ranging applications. An indoor multipath channel is assumed but, unlike previous investigations, the received pulses are not taken as separate from each other. Overlaps are possible and are accounted for. A simple formula is derived for the bound, which neatly shows its dependence on the channel parameters and the pulse shape. Comparisons are made with the case of separable pulses.
Keywords
ultra wideband communication; Cramer-Rao bound; UWB ranging applications; channel parameters; clock drift; frequency drift; indoor multipath channel; pulse shape; ultrawide bandwidth impulse-radio; Clocks; Cramer-Rao bounds; Distance measurement; Probability density function; Shape; Wireless communication; Cramer-Rao bounds; UWB ranging methods; clock drift estimation;
fLanguage
English
Journal_Title
Wireless Communications Letters, IEEE
Publisher
ieee
ISSN
2162-2337
Type
jour
DOI
10.1109/WCL.2013.080813.130424
Filename
6577904
Link To Document