Performance Evaluation of MIMO in Urban Microcell for Dhaka City at 28 GHz Frequency

Abstract

5th generation cellular network is the upcoming revolution in the cellular communication world. It tends to operate in millimeter wave frequency to provide the throughput requirements of the next generation. The 28 GHz frequency band is a significant candidate for mm Wave communication with more than 3 GHz of potential bandwidth. Direct communication between wireless transmitter and receiver is established by line of sight (LOS) communication, and several types of wireless and radio transmissions depend on it. But in the random transmission of wireless signals, interruptions are made by different types of obstacles which are responsible for creating non-line of sight scenarios. A proper selection of a number of antenna elements in 28 GHz frequency in NLOS and LOS environment and their performance by analysing different channel parameters in urban microcell scenario for Dhaka city is presented in this work. The analysed parameters for this research work include an angle of arrival (AoA) and angle of departure (AoD) for azimuth and elevation angle, time delay profile, RMS delay spread, path loss exponent for both LOS and NLOS environment.