SINR Analysis and Interference Management of Macrocell Cellular Networks in Dense Urban Environments

The increasing growth of wireless applications leads to the congestion of radio spectrum below 10 GHz. This has slowed down the growth of high data rate applications due to the limited bandwidth of currently used frequency bands. This prompted wireless service providers to look for 30–300 GHz frequency band for mobile Broadband and enhanced mobile Broadband services. In this paper, the performance of 5G cellular networks at 30 GHz frequency by suppressing the interference caused by multiple transmissions from potential interferers sharing the same physical medium has been studied. Here initially the appropriate interference model that can predict the outage events in 5G cellular networks in any scenario has been investigated. Next using a cellular network site in dense urban environment with high traffic loads, user density and pedestrian and vehicular movement was created. The signal-to-interference-plus-noise ratio (SINR) is visualized for different antenna systems on a map using real geospatial information. The SINR maps of single antenna element and antenna array are plotted and compared. Both Free-space propagation model and Close-in-Propagation model are used to compare the results. Also using a uniform planar array of antennas on network-side the directionality increases hence interference reduces and higher values of SINR are achieved.