Ranging Accuracy in Dynamic Spectrum Access Networks
Celebi, H.; Arslan, H.
Communications Letters, IEEE
Volume 11, Issue 5, May 2007 Page(s):405 - 407
Digital Object Identifier   10.1109/LCOMM.2007.070345
Summary:Theoretical analysis of time-of-arrival (TOA)-based high-precision ranging algorithm for the dynamic spectrum access networks (DSANs) is performed. The asymptotic frequency-domain Cramer-Rao bound (CRB) of the ranging algorithm that takes the frequency-dependent feature (FDF) and phase of multipath components (MPCs) into account is derived through Whittle formula. The effects of FDF-MPCs and related parameters such as absolute bandwidth and operating center frequency on the ranging accuracy are investigated. The results show that the impacts of the FDF-MPCs on the ranging accuracy can be significant and it is recommended utilizing as large absolute bandwidth as possible at low operating center frequencies to obtain high-precision distance information of the users in the DSANs

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