Accurate Modeling and Simulation in mmWave Cellular Networks for Spectrum Sharing and Antenna Designs

With the increasing demand for data and the growth of the connections between devices, a new generation of mobile networks, denominated 5G, has been defined to reach the high data rates required. Its deployment has already begun all around the world. The new standard presents many challenges due to its complexity, ranging from the concerns about its feasibility to the issues related to the new features introduced. In this thesis, after investigating how an accurate modeling of both the channel environment and the antenna propagation pattern strongly affect the simulated millimeter-wave scenario, some of the new issues are studied. We will present innovative solutions that will be examined in depth though figures and graphs which will be used to compare the performance of all the considered procedures. In this respect, we examine (i) different spectrum sharing approaches, (ii) some antenna array designs aspects and (iii) a stochastic geometry mmWave analysis.