Vehicular-based Antenna Architectures for Two-tier 5G Wireless Systems

This thesis considers the two-tier wireless network consisting of primary and secondary nodes placed in a car as an array antenna. Many antenna configurations are possible such as linear, circular, 2D square grids, etc. We consider a MIMO system as a link from the primary to secondary nodes. Antenna element spacing determines correlation between the elements. We determine the capacity and coverage gains over state-of-the-art vehicular antennas for different environments. This thesis also studies the effect of antenna element tilt on the performance. Using an 8Ă 8 configuration, our results yield a four-fold enhancement of capacity in urban areas, and a two-fold gain in highways. We are able to decrease the load on primary nodes by up to 60 per cent. We also note that for 8 Ă 8 MIMO, the fading handling capabilities note that it does not matter what angle the vehicle antenna is oriented at.M.A.S