In-tunnel vehicular radio channel characterization

Laura Bernadó, Anna Roma, Alexander Paier, Thomas Zemen, Nicolai Czink, Johan Karedal, Andreas Thiel, Fredrik Tufvesson, Andreas F Molisch, Christoph F Mecklenbrauker

Research output: Chapter in Book or Conference ProceedingsConference Proceedings with Oral Presentationpeer-review


Inside a tunnel, electromagnetic wave propagation differs strongly from the well understood "open-air" situation. The characterization of the tunnel environment is crucial for deploying vehicular communication systems. In this paper we evaluate vehicle-to-vehicle (V2V) radio channel measurements inside a tunnel. We estimate the time-varying root mean square (rms) delay and Doppler spreads, as well as the excess delay and the maximum Doppler dispersion. The fading process in V2V communications is inherently non-stationary. Hence, we characterize the stationarity time, for which we can consider the fading process to be wide sense stationary. We show that the spreads, excess delay, and maximum Doppler dispersion are larger on average when both vehicles are inside the tunnel compared to the "open-air" situation. The temporal evolution of the stationarity time is highly influenced by the strength of time-varying multipath components and the distance between vehicles. Furthermore, we show the good fit of the rms delay and Doppler spreads to a lognormal distribution, as well as for the stationarity time. From our analysis we can conclude that the IEEE 802.11p standard will be robust towards inter-symbol and inter-carrier interference inside a tunnel.
Original languageEnglish
Title of host publication2011 IEEE 73rd Vehicular Technology Conference (VTC Spring)
Number of pages5
ISBN (Electronic)978-1-4244-8331-0
Publication statusPublished - 2011
Event2011 IEEE 73rd Vehicular Technology Conference - Budapest, Hungary
Duration: 15 May 201118 May 2011


Conference2011 IEEE 73rd Vehicular Technology Conference

Research Field

  • Enabling Digital Technologies


Dive into the research topics of 'In-tunnel vehicular radio channel characterization'. Together they form a unique fingerprint.

Cite this