Study on Beamforming V2I Scenarios for Sub-6 GHz and mmWave Channels

The study of the wireless channel between a hybrid massive MIMO Base Station (BS) and a vehicular platform is proposed. Several multi-antenna geometries and MIMO architectures in both vehicle and BS are numerically modeled and compared. Different metrics are used for the assessment of the system performance, including channel capacity, in two frequency bands, sub-6GHz (5.9GHz) and millimeter-wave (mmWave) (26GHz), under different propagation conditions. The use of beamforming techniques on the vehicle side is compared to conventional SISO and MIMO solutions. In the urban scenario used in the study, a 45° beamwidth circular array is able to enhance the single monopole performance up to 157% in capacity, and outperform MIMO $4\times 4$ in most situations.