PROBLEMS AND CHALLENGES FOR THE RADIO FREQUENCY SPECTRUM MANAGEMENT SYSTEM IN MODERN CONDITIONS OF RADIO TECHNOLOGY DEVELOPMENT
P.I. Antonovich, The M.I. Krivosheev Radio Research & Development Institute (NIIR), director of electromagnetic compatibility analysis center, associate professor, Dr.Sci.(Mil.); p.antonovich@niir.ru
S.V. Shvets, NIIR, head of laboratory, Ph.D.; shvec@niir.ru
An analysis of the results of scientific research aimed at solving the problems of providing a radio frequency resource under the conditions of accelerating the development of radio technologies is carried out. The conversion of the radio frequency spectrum is proposed to provide promising wireless technologies with a radio frequency resource. Methods for increasing network throughput as a priority requirement for new applications are presented.
Keywords: electromagnetic spectrum, radio frequency spectrum conversion, bandwidth enhancement, digital transformation.
SIMULATION OF THE INFLUENCE OF SPOOFING IN GLOBAL NAVIGATION SATELLITE SYSTEMS USING THE SOFTWARE SIMULATION TELECOMM
D.K. Mazurenko, The M.I. Krivosheev Radio Research & Development Institute (NIIR), leading researcher, Ph.D.; dm.ma2010@yandex.ru
D.A. Palcin, NIIR, head of research center; palcin@niir.ru
A.S. Fen, NIIR, head of department; fen@niir.ru
M.L. Schwartz, Moscow Technical University Of Communications And Informatics, head of department, Ph.D.; mschwartz@smsync.ru
It is proposed a model that simulates the effect of spoofing on the time and frequency synchronization signal received by the user’s ground-based equipment from satellite navigation radio systems using the software Simulation Telecomm. The spoofing effect was simulated by varying the alphabet matrices and transition probabilities describing the probabilistic automaton, while using the alphabet matrices and transition probabilities, the spoofing effect was set in the form of a 1PPS synchronization signal delay deviation.
Keywords: spoofing, system of synchronization signals, reference signals of time, reference signals of frequency, simulation of influence interference.
MOBILE MEDIUM AVE TRANSMITTING RADIO STATION
V.F. Myshkin, Tomsk Polytechnic University (TPU), nuclear fuel cycle department, professor, Dr.Sci.(Phys.-Math.); gos100@tpu.ru
I.I. Pavlov, Siberian State University of Telecommunications and Information Science, department of radio engineering devices and technosphere security, associate professor, Ph.D.; iipavlov02@mail.ru
V.L. Khazan, Omsk State Technical University, department of communications and information security, professor, Dr.Sci.(Tech.); vlhazan@yandex.ru
V.A. Khan, TPU, professor, V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, lead researcher, professor, Dr.Sci.(Tech.); nt.centre@mail.ru
The problem of creating a mobile transmitting radio station with high power transmitters and the ability to organize a communication session during the movement of vehicles arises from the large size of wired antennas. Creation of a medium wave transmitting radio station in a mobile version, possibly using small-sized transmitting antennas, which will allow them to be placed on a vehicle and operate while it is moving. As a similar type of small-size transmitting antenna, a transmitting small-size ferrite antenna is considered, which is a serial (open) oscillatory circuit with inductance, made using a magnetic circuit in the form of ferrite rods. As a sample for converting a mobile transmitting radio station to a mobile radio station operating in a medium-wave frequency band, a known transmitting radio station PAR-10 can be taken. As a result, the medium-wavelength mobile transmitting radio station will increase the efficiency of the radio station and provide a predetermined level of signal transmission power by using the required number of small-sized transmitting ferrite spatially separated resonance antennas.
Keywords: transmitting radio station, medium wave band, ferrite antenna, signal power, electromagnetic field intensity.
ALGORITHMS FOR ENERGY SAVING IMPROVEMENT OF USER EQUIPMENT IN 5G NR COMMUNICATION SYSTEMS. PART I
G.A. Ermolaev, Lobachevsky State University of Nizhni Novgorod, mobile communication systems department, postgraduate; gregory.a.ermolaev@gmail.com
The purpose of this work is to increase the efficiency of the discontinuous reception scheme (DRX-scheme) used for user equipment energy saving, which was introduced in the first release (Release 15) of the 5G wireless mobile communication New Radio (NR) systems. In the first part of the paper, algorithms for the dynamic adaptation of thisscheme to incoming traffic by switching between modes with different power consumption with help of the special wake-up and go-to-sleep signals are proposed. Furthermore, the first part of the paper describes the system model of the 5G NR communication system, which used to analyze the efficiency of the proposed energy saving schemes.
Keywords: radio communication systems, energy saving, discontinuous reception scheme, DRX, receiving and transmitting equipment, digital signal processing algorithms, 5G NR.
CREATION OF GROUND-BASED SPACE COMMUNICATION COMPLEXES BASED ON ADVANCED TECHNOLOGIES USING DIGITAL TWINS
D.V. Bosomykin, The M.I. Krivosheev Radio Research & Development Institute (NIIR), Scientific and Technical Center for Development of Complex Radio Systems (STC DCRS), director; dvb@niir.ru
A.P. Vorontsov, NIIR, STC DCRS, deputy director; vap@niir.ru
The article considers the stages of creating promising ground-based complexes of space communication systems and their components, formulates proposals for the use of continuous cycle technology and a new approach to modeling and designing complexes based o typical processes and semantic anomalies. Two directions of development are considered: the development of satellite communications integration technologies in converged 5G/6G networks based on hybrid packet switching networks; and the creation of traffic transmission system digital twins in 5G/6G networks via satellite repeaters.
Keywords: satellite communications complex, standard information process, artificial intelligence systems, machine learning, hybrid networks, convergent 5G/6G networks, digital twins, semi-natural modeling.
RESEARCH AND ANALYSIS RADIO FREQUENCY MACHINE LEARNING RFML
A.Y. Grebeshkov, Povol zhskiy State University of Telecommunications and Informatics, professor, Dr.Sci.(Tech.); a.grebeshkov@psuti.ru
The paper is devoted to the problem of using radio frequency machine learning for wireless networks. It is noted that machine learning is widely used in telecommunications for signaling and fault classification and event prediction process with neuron networks as example. It is technically possible to identify a transmitter by radio fingerprint at the physical level. It is pointed out that it is possible to use radio frequency machine learning to build a classifier of radio frequency fingerprint for electronic facilities. Practical examples of radio frequency machine learning applications are given.
Keywords: neuron networks, radio frequency machine learning, radio frequency fingerprinting, RFML.
SUPERPOSITION OF MULTI-SCALE IMAGES FOR REAL-TIME VIDEO SURVEILLANCE SYSTEMS FOR RAILWAY APPLICATIONS
R.R. Diyazitdinov, Povolzhskiy State University of Telecommunications and Informatics, department of network and telecommunication systems, associate professor, Ph.D.; rinat.diyazitdinov@gmail.com
Ensuring the safety of railway transport is a complex task. One of the components of this task is to control the positions of the catenary wire holders. The catenary wires are under high voltage and the holders provide protection from contact with other elements of the catenary network, because it is dangerous to people’s lives. Automated control of the position of the catenary wire holders is based on their recognition in the video surveillance system of the monitoring railway cars. Reducing the probability of target (catenary wire holders) dropout provides better measurements of its position. The solving of this problem is allowed by the technique for superposition of the multi-scale images in real time. The idea is that if the holder dropout on the current frame, then its position can be determined if the holder was recognized on the previous frame by superposition of these frames.
Keywords: superposition, multi-scale, safety, railway, real-time, image, log-polar, iteration.
CALCULATION OF THE NEEDS FOR TELECOMMUNICATION SERVICES AT THE POINTS OF GEOSPACE OF THE RUSSIAN FEDERATION BASED ON THE ROSSTAT DATA IN ORDER TO ENSURE PLANNING AND CONTROL OF THE IMPLEMENTATION OF INFRASTRUCTURE TELECOMMUNICATIONS PROJECTS. PART I
S.I. Lopato, The M.I. Krivosheev Radio Research & Development Institute (NIIR), Center for Research of Big Data Processing Systems, deputy director; lopato@niir.ru
The article presents a methodology for calculating the needs of individual and corporate users in wireless and wired telecommunications services. The methodology is based on the use of open data on the current availability of these users with telecommunications services in the amount of information generated and published by Rosstat of the Russian Federation as part of the annual statistical collections of Rosstat of the Russian Federation «Information Society of the Russian Federation». The first part of the article discusses the general approach to calculating the need for telecommunications services, outlines the composition of open data on the provision of consumers with telecommunications services, describes the components of the formula for calculating the need for telecommunications services for a given point and the procedure for forming its coefficients.
Keywords: telecommunication infrastructure, infrastructure project, telecommunication service needs, geospatial point, infrastructure categories of consumer affiliation, markers of geospatial point belonging to the type of terrain and development.
APPLICATION OF MODERN REGRESSION ANALYSIS METHODS FOR SUPPRESSION OF INTERCHANNEL INTERFERENCE IN WIRELESS COMMUNICATION SYSTEMS
O.V. Go ryachkin, Povolzhskiy State University of Telecommunications and Informatics (PSUTI), vice-rector for research, professor, Dr.Sci.(Tech.); o.goryachkin@psuti.ru
A.V. Borisenkov, PSUTI, department of theoretical foundations of radio engineering and communications, associate professor, Ph.D.; a.borisenkov@psuti.ru
N.A. Gusev, JSC Telematics Systems, engineer; gus1000@list.ru
The article discusses the technology of multiple access in wireless communication networks based on MIMO, which uses power multiplexing in combination with orthogonal frequency division (OFDM). The paper analyzes linear algorithms for allocating the signal of the main user against the background of interfering signals of other users using the same time and frequency resources of OFDM. The task of extracting the useful signal against a background of interference comes down to the task of regression analysis, in connection with which comparative modeling of regression analysis algorithms based on the least squares method, RIDGE, LASSO, and variation Bayes algorithms is carried out, and the latter showed the best results.
Keywords: MU-MIMO, OFDM, regression analysis, ridge regression, LASSO algorithm, variational Bayesian approach.
