Performance Study of 5G Downlink Cell

Abstract

5G new radio millimeter wave (5G NR mmWave) is the upcoming technology with a new interface which is developed to be an extension to the existing 4G technology. The main target for 5G is to have a wide range of services with the high data rate, high coverage, reduced delay, reduced cost, high system capacity and multiple connectivity for users everywhere. In this paper, a performance study of 5G cell in the downlink is considered. The main idea of 5G is to provide high performance regarding throughput and spectral efficiency in the dense urban area which is not possible to be provided by a Wi-Fi network. Based on OFDM modulation, the 5G cell is divided into three virtual zones to study the performance of 5G in the inner zone compared to outer zones for licensed and unlicensed spectrum alike. Different performance indicators are considered in the analysis such as; loss probability, delay, throughput as well as aggregate average bit rate in different zones. The provided numerical results show that 5G performance is always better in the most inner zones (i.e. pico) compared to the outer zones (i.e. micro and macro) zones, consequently, the overall cell performance is also improved. Besides, 5G performance is compared with LTE performance under the same simulation parameters to show that 5G always provide a better performance, especially in the most inner zone.