Vehicular-to-vehicular channel characterization and measurement results

[EN] Vehicular-to-Vehicular (V2V) communications are receiving considerable attention due to the introduction of the intelligent transportation system (ITS) concept. To design, evaluate and optimize ITS applications oriented to vehicular safety based on wireless systems, the knowledge of the propagation channel is vital, in particular the path loss. From a narrowband V2V channel measurements campaign carried out in a suburban area of the city of Valencia (Spain), this paper analyzes the path loss in terms of the transmitter (Tx) and receiver (Rx) separation distance. Based on a linear slope model, values for the path loss exponent and the standard deviation of shadowing are reported. Also, the Doppler Power Spectral Density (PSD) due to the time-selective behavior is examined.