ANALYSIS OF INDICATORS OF ELECTROMAGNETIC COMPATIBILITY OF COMMUNICATION NETWORKS 5 G

Abstract

Context. The next generation 5G / IMT-2020 technology, like any new technology, brings its own specific features to all aspects of the practice of its application. One of these particularly important aspects is electromagnetic compatibility. At the stage of preparation for the introduction of 5G radio networks, it is necessary to take early measures to effectively assess the EMC conditions for these networks based on a thorough analysis of the features of 5G technology, and by correctly and accurately assessing these conditions, successfully ensure the electromagnetic compatibility of radio equipment of new networks. Objective. The purpose of this work is to analyze the electromagnetic compatibility of the 5G communication network. Method. An analysis of the main features of the 5G radio interface provides an indication of the expected features of the EMC assessment procedures for these networks. These features mainly relate to taking into account the total interference from the network with its special architecture and dynamics of changes, the choice of new loss models (channel models) for spatially distributed radiation of multidimensional MIMO antennas and a heterogeneous signal propagation medium, as well as taking into account the spectral properties of new signal shapes and character radiation with new non-orthogonal radio access methods.For EMC analysis, a model of signal attenuation in millimeter-wave radio channels was used, taking into account attenuation of radio waves in free space; loss of energy of radio waves when propagating through rains; attenuation of a millimeter wave signal when propagating through the leaves of trees; attenuation of signals when passing through dense obstacles (buildings, structures, etc.). Results. The analysis of attenuation of the millimeter-wave signal in free space from the intensity of precipitation is carried out at various values of optical visibility. The analysis of the attenuation of the millimeter-wave signal from the distance when the signal propagates through obstacles in the form of walls at various values of the wall thickness is carried out. The analysis of the attenuation of the millimeter-wave signal from the depth of the leaf layer is carried out; it covers the signal propagation at different values of the carrier frequency. The analysis of the value of the power of the millimeter-wave signal at the input of the receiver on the intensity of precipitation is carried out at various values of optical visibility. The analysis of the value of the power of the millimeter-wave signal at the input of the receiver versus the distance when the signal propagates through obstacles in the form of walls at various values of the wall thickness is carried out. The analysis of the power value of the millimeter-wave signal at the receiver input from the depth of the leaf layer is carried out, overlaps the signal propagation at various values of the carrier frequency. Conclusions. The conducted studies of EMC indicators allow us to give recommendations on the application of 5G technology in specific practical situations.