Interference Management in 5g Millimeter wave Networks

Abstract

The proliferation of the use of smart phones, mobile data, high-speed networks, and real-time newlinedata demand huge bandwidth and thus create significant challenges for wireless service providers newline(WSPs) in an exploration of existing wireless systems. The next-generation networks operating newlineat mmWave frequencies are expected to be the panacea for the bandwidth-hungry applications. newlineOne of the most important advantages of mmWave communication technology is a huge spectral newlinebandwidth. This provides room for scalability of the capacity of mmWave networks according to newlinethe increasing demands of users. However, due to the challenging propagation characteristics of newlinemmWaves the potential of this band has not been leveraged to the maximum. newlineThis thesis investigates the effect of constituents of the atmosphere on the propagation of newlinemmWaves. The propagation characteristics of mmWaves primarily depend on absorption by newlineatmospheric oxygen, fog, rain, and foliage. A simulation study supported with mathematical newlineanalysis has been carried out to evaluate the effect of atmospheric constituents and foliage on the newlinepropagation of mmWave frequencies supposed to be used in 5G cellular networks. In addition to newlinethis, interference management is another critical factor that influences the performance and newlineQuality of Service (QOS) of the utilization of a mmWave network. These factors motivate to newlineaddress the above-mentioned challenging factors so that mmWave band can be fully exploited. newlineIn this work, different interference models are studied and mathematically evaluated for use in newline5G mmWave networks. As a first step to achieve this objective, a cellular network site in dense newlineurban environments is investigated. The interference from multiple potential interferers sharing newlinethe same physical medium is modeled using Interference Ball Model (IBM). Cosine antenna is newlinedesigned and proposed for use in mmWave cellular networks, replacing the currently used newlinemicrostrip antenna. Comparing the values of SINR obtained by using cosine and patch anten