Interference Reduction Factor Evaluation for Cylindrical and Parallelepiped Antenna Arrays in Massive MIMO Systems

Telecommunication systems are demanding more and more in terms of spectral efficiency and guarantee lower latencies among other performance metrics. One of the technologies that allows this performance is the Extremely Large Aperture Arrays technology which seeks to significantly increase the number of antennas in Base Stations. This achieves a narrower radiation lobe and reduces the interference between adjacent users. The Interference Reduction Factor (IRF) quantifies the interference reduction of an array about the single antenna case. This paper presents the simulation of Uniform Square Array (USA), Uniform Circular Array (UCA), Uniform Parallelepiped Array (UPaA), and Uniform Cylindrical Array (UCyA) configurations and the estimation of their IRF. The IRF of these arrays is compared with Uniform Linear Array (ULA) and Uniform Planar Array (UPA) configurations. Simulation results determine that USA and UPaA geometry perform better in the same spatial region than UCA and UCyA respectively.