Doppler Shift and Envelope Distribution of V2V Channels at 5.9 GHz in Suburban Environments

This paper presents the results of a measurement campaign of the Doppler shift and envelope distribution of small-scale vehicle-to-vehicle (V2V) channels at 5.9 GHz. The measurement experiments were conducted in a suburban environment in the city of San Luis Potosí, México. The obtained results show that the Rice distribution provides the best fit for the empirical subcarrier envelope distribution in 90.7% of the cases, whereas the Nakagami and Weibull distribution provide the best fit in the remaining 1.3% and 7.9%, respectively. The measured mean Doppler shift and Doppler spread suggest that the sounding signal arrived at the receiver from multiple propagation paths. However, such paths produced a mild signal dispersion in the Doppler frequency domain. The results presented here are intended to serve as a benchmark for the performance analysis of vehicular communication systems under realistic propagation conditions.