Title :
Ranging Accuracy in Dynamic Spectrum Access Networks
Author :
Celebi, Hasari ; Arslan, Hüseyin
Author_Institution :
Dept. of Electr. Eng., Univ. of South Florida, Tampa, FL
fDate :
5/1/2007 12:00:00 AM
Abstract :
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
Keywords :
cognitive radio; frequency-domain analysis; radio access networks; time-of-arrival estimation; Cramer-Rao bound; DSAN; FDF; MPC; TOA-based high-precision ranging algorithm; asymptotic frequency-domain CRB; cognitive radio; dynamic spectrum access network; frequency-dependent feature; multipath phase component; time-of-arrival algorithm; Algorithm design and analysis; Authorization; Bandwidth; Cognitive radio; Frequency; Heuristic algorithms; Performance analysis; Quality of service; Time domain analysis; Transceivers;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2007.070345
