ANALYSIS AND MAIN TECHNOLOGIES OF THE FIFTH GENERATION MOBILE NETWORK STANDARD
The article is devoted to a comprehensive analysis and study of the fifth generation mobile network model. The technologies used in the implementation of this network model and its main characteristics are considered. Orthogonal frequency division multiplexing. The method of spatial coding of the signal. Spectrum sharing technologies. The fundamental concepts of the theory of mobile networks are explained. The questions of application and use of the new standard of the mobile network in various areas of human activity, as well as conflicts that arose during the development of the model of this mobile network, are raised. The article proposes technical solutions for adaptive digital modules of antenna arrays of radio engineering systems, including fifth-generation digital communication systems, which can improve the conditions for detecting useful signals against interference due to mechanical damage to elements of antenna-waveguide paths. The indicated improvement in detection conditions is achieved in three ways. First of all. A method for synthesizing the algorithms of a factorizable space-time detector of non-factorizable (broadband in the space-time sense) signals using multi-channel frequency filtering in each spatial channel based on the mathematical apparatus of matrix kronecker-tensor products is proposed. It is shown that the introduction of the proposed method into the practice of creating digital analog-to-digital modules will be able to provide a gain in terms of signal-to-noise of at least (8-12) dB in comparison with known devices using, for example, antenna array sublattices. Secondly, the placement of the waveguide path of adaptive digital modules of digital antenna arrays in a conductive sheath on a rubber basis capable of covering mechanical damage and preventing electromagnetic radiation from emitting through them into space. Thirdly, the use of modules of digital antenna arrays of radio engineering systems, including fifth and sixth generation digital communication systems, as an object of automatic correction of amplitude-frequency characteristics that can change when mechanical damage occurs during operation. Thus, the use of the proposed technical solutions can make it possible to increase the signal-to-noise ratio at the output of the receiving modules of digital antenna arrays in military communication systems with MIMO-OFDM technologies in local armed conflicts in comparison with known solutions.