Ranging accuracy in dynamic spectrum access networks

Celebi H., ARSLAN H.

IEEE Communications Letters, vol.11, no.5, pp.405-407, 2007 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 5
  • Publication Date: 2007
  • Doi Number: 10.1109/lcomm.2007.070345
  • Journal Name: IEEE Communications Letters
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.405-407
  • Keywords: cognitive radio, Cramer-Rao bound, dynamic spectrum access networks, ranging, time-of-arrival
  • Istanbul Medipol University Affiliated: Yes

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. © 2007 IEEE.