  In this paper, a practical model for non-stationary Vehicle-to-Vehicle (V2V)
multiple-input multiple-output (MIMO) channels is proposed. The new model
considers more accurate output phase of Doppler frequency and is simplified by
the Taylor series expansions. It is also suitable for generating the V2V
channel coefficient with arbitrary velocities and trajectories of the mobile
transmitter (MT) and mobile receiver (MR). Meanwhile, the channel parameters of
path delay and power are investigated and analyzed. The closed-form expressions
of statistical properties, i.e., temporal autocorrelation function (TACF) and
spatial cross-correlation function (SCCF) are also derived with the angle of
arrival (AoA) and angle of departure (AoD) obeying the Von Mises (VM)
distribution. In addition, the good agreements between the theoretical,
simulated and measured results validate the correctness and usefulness of the
proposed model.
