Skip to content


  • Research Article
  • Open Access

Identification of LOS in Time-Varying, Frequency Selective Radio Channels

EURASIP Journal on Wireless Communications and Networking20082008:195948

  • Received: 16 August 2007
  • Accepted: 22 February 2008
  • Published:


A method is proposed to identify the existence of line-of-sight (LOS) for time-varying, frequency selective radio channels. The proposed method considers the second-order statistical characteristics of underlying process in the channel taps. Identification is established by comparing the autocorrelation coefficients of the first tap with those of any other tap when the other tap reaches its coherence time. Numerical results and related discussions are presented considering several practical scenarios.


  • Information System
  • Coherence
  • Autocorrelation
  • Statistical Characteristic
  • System Application

Publisher note

To access the full article, please see PDF

Authors’ Affiliations

Department of Electrical Engineering, University of South Florida, 4202 E. Fowler Avenue, ENB-118, Tampa, FL 33620, USA


© S. Yarkan and H. Arslan. 2008

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.