Table of Contents Author Guidelines Submit a Manuscript
International Journal of Antennas and Propagation
Volume 2015 (2015), Article ID 190607, 12 pages
http://dx.doi.org/10.1155/2015/190607
Research Article

A Measurement Based Shadow Fading Model for Vehicle-to-Vehicle Network Simulations

1Department of Electrical and Information Technology, Lund University, P.O. Box 118, 22 100 Lund, Sweden
2The Centre for Research on Embedded Systems, Halmstad University, Halmstad, Sweden
3Department of Advanced Technology and Research, Volvo Group Trucks Technology (GTT), Götaverksg. 10, 405 08 Gothenburg, Sweden

Received 16 February 2015; Accepted 17 May 2015

Academic Editor: Christoph F. Mecklenbräuker

Copyright © 2015 Taimoor Abbas et al. 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.

Abstract

The vehicle-to-vehicle (V2V) propagation channel has significant implications on the design and performance of novel communication protocols for vehicular ad hoc networks (VANETs). Extensive research efforts have been made to develop V2V channel models to be implemented in advanced VANET system simulators for performance evaluation. The impact of shadowing caused by other vehicles has, however, largely been neglected in most of the models, as well as in the system simulations. In this paper we present a shadow fading model targeting system simulations based on real measurements performed in urban and highway scenarios. The measurement data is separated into three categories, line-of-sight (LOS), obstructed line-of-sight (OLOS) by vehicles, and non-line-of-sight due to buildings, with the help of video information recorded during the measurements. It is observed that vehicles obstructing the LOS induce an additional average attenuation of about 10 dB in the received signal power. An approach to incorporate the LOS/OLOS model into existing VANET simulators is also provided. Finally, system level VANET simulation results are presented, showing the difference between the LOS/OLOS model and a channel model based on Nakagami-m fading.