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Measurement based Shadow Fading Model for Vehicle-to-Vehicle Network Simulations

Författare:
Publiceringsår: 2012
Språk: Engelska
Dokumenttyp: Artikel

Sammanfattning

The Vehicle-to-Vehicle (V2V) propagation channel has significant implications on the design and performance of novel communication protocols for Vehicular Ad Hoc Networks (VANET). Extensive research efforts have been made to develop and implement V2V channel models for advanced VANET system simulators. 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 simple shadow fading model targeting system simulations based on real world measurements performed in urban and highway scenarios. Video information from the measurements is used to separate the line-of-sight (LOS) condition from the obstructed line-of-sight (OLOS) by vehicles and non line-of-sight (NLOS) by buildings. It is observed that the vehicles obstructing LOS induce an additional attenuation of about $10$\,dB in the received signal power. We use a Markov chain based state transition diagram to model transitions from LOS to obstructed LOS and present an example of state transition intensities for a real traffic mobility model. We also provide a simple recipe, how to incorporate our shadow fading model in VANET network simulators.

Disputation

Nyckelord

  • Technology and Engineering
  • Channel measurements
  • V2V
  • vehicular
  • VANET simulator
  • shadow fading model
  • large-scale fading

Övriga

Submitted
  • EIT_V2V Radio channel properties of wireless vehicular systems
Yes
  • ISSN: 0733-8716

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