A Measurement Based Shadow Fading Model for Vehicle-to-Vehicle Network Simulations
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 simu...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Hindawi Limited
2015-01-01
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| Series: | International Journal of Antennas and Propagation |
| Online Access: | http://dx.doi.org/10.1155/2015/190607 |
| Summary: | 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. |
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| ISSN: | 1687-5869 1687-5877 |