5G MOBILE STANDARDIZATION AS A PROCESS OF CREATION OF DIGITAL ECONOMY INFRASTRUCTURE BASIS
V.O. Tikhvinskiy, JSC NIITC, deputy general director on innovation technologies, MTUCI, professor, Dr.Sci. (Econ.); firstname.lastname@example.org
The role of the leading international standardizing organizations ITU and 3GPP in the process of creating standards for characteristics and services of the key mobile communication technology 5G, which is the infrastructure basis of the digital economy, is considered. The article analyzed the achievements and plans of ITU and 3GPP for the development of 5G standards. It is proposed to begin the development of series of national standards for 5G technology that take into account the specifics of technical regulation of the Russian Federation and stimulate national manufacturers of electronic components and communication systems to the production of the 5G networks equipment in Russia.
Keywords: ITU, 3GPP, RIT, 5G NR, 5G Core, IMT-2020.
MODERN EXPERIMENTAL METHODS IN THE FIELD OF QUANTUM TECHNOLOGIES OF LIGHT SIGNALS TRANSMISSION
Е.О. Andronikova, Moscow State Technological University Stankin (MSTU Stankin), postgraduate; ya. email@example.com
L.А. Uvarova, MSTU Stankin, head of the department of applied mathematics, professor, Dr.Sci. (Phys.-Math.); firstname.lastname@example.org
The experimental base in the field of quantum technologies of the fastest transmission of light signals over long distances is considered. Schemes and results of the experiments made over the past 16 years for the practical research of continuous variable quantum teleportation are outlined. A short description of the experiment of Chinese scientists on quantum teleportation from Earth to the satellite, carried out in the 2017, is given. The hypothesis of the theoretical possibility of instantaneous movement of light signals along isotropic geodesic lines of four-dimensional pseudo-Riemann space-time of the Godel Universe type is made.
Keywords: quantum information theory, teleportation, light transmission, Godel Universe.
DETERMINATION OF MODULATION INDEXES FOR FORMATION OF SIGNALS WITH ADAPTIVE AMPLITUDE MODULATION
M.A. Bykhovskiy, MTUSI, professor, Dr.Sci. (Tech.); email@example.com
For a communication system with adaptive amplitude modulation (AAM) the algorithm of formation of modulation indexes whose values depend on information parameter m (the number of a signal transmitted through a communication channel) has been developed. These values allow generating a signal corresponding to the number m of the transmitted information sequence in the modulator. It is demonstrated how during reception of transmitted signals a copy of modulation indexes is created in the demodulator which allows restoring the number m of the received signal. Recording of the number m of the message in the form of binary sequence represents the copy of the transmitted message. The formula which defines dependence of m on the values of received modulation indexes is obtained. The structure of ensemble of signals (ES) with ААМ is analyzed. The results allow reducing the number of signals that belong to the ES with ААМ and to simplify their formation in the modulator. The specific speed of message transmission in a communication system with reduced ES decreases slightly.
Keywords: method of digital modulation, multidimensional ensemble of signals, formation and demodulation of signals, spectral efficiency of communication systems.
CYCLOSTATIONARY RADIO SIGNAL ANALYSIS USING REALTEK RTL2832U AND Qt FRAMEWORK
Eu.N. Efimov, Moscow Aviation Institute (MAI), Scientific Research Department-4, researcher, Ph.D.; firstname.lastname@example.org
T.Ya. Shevgunov, MAI, department of theoretical radio engineering, associate professor, National Research University Higher School of Economics, associate professor, Ph.D.;
D.M. Zhukov, MAI, Scientific Research Department-4, postgraduate; email@example.com
A technical prototype of the hardware-software system based on software-defined radio for analysis of cyclostationary signals is described. The hardware part of the system is based on software-defined radio chip REALTEK RTL2832U. The software part of the system uses free software framework Qt and runs on a PC under GNU\Linux operating system. The description of the main functional blocks of the system is provided. Options of the implementation of the algorithm for evaluating the cyclic spectral power are considered. The results of the full-scale experiment are presented.
Keywords: cyclostationarity, SDR, RTL, Qt, cyclic spectral density, CSD, signals and systems, spectral analysis, spectral correlation analysis, FFT.
USING CLUSTERING k-Means ALGORITHM FOR NETWORK TRAFFIC IDENTIFICATION
The use of k-Means clustering algorithm for solving the important practical problem of identification of network traffic is considered. Results of a practical experiment showed considerable unevenness of identification of different types of traffic.
Keywords: machine learning, clustering, unsupervised learning, k-Means algorithm, traffic class, adjusted Rand index.
ESTIMATION OF RECEIVED POWER FOR THE MARINE RADIO-TRACK WITH SHIP-BASED COMMUNICATION POINTS
V.M. Gavrilov, Vladimir State University named after Alexander and Nikolay Stoletovs (VlSU), professor, Ph.D.; valerian. firstname.lastname@example.org
R.N. Gluhov, CJSC MWT, design engineer; email@example.com
V.K. Dementiev, VlSU, assistance lecturer; firstname.lastname@example.org
E.A. Labzina, VlSU, master, JSC GC Systems and Technologies, engineer of metrological service; email@example.com
The results of the electrodynamic calculation of the received power on the sea route with ship-based mobile communication points by means of software FEKO are presented. Movable contact points were located on identical parallel oriented patrol ships in a calm sea. These contact points were equipped with omnidirectional antennas mounted on the mast structures above the radar antenna at the height of 19,7 m above the deck. Simulation is carried out at a frequency of 517,5 MHz and output power of 10 Watts.
Keywords: computer modeling, radio channel, mobile and stationary communication point, sea surface, software FEKO.
USING THE TECHNOLOGY OF VIRTUAL INSTRUMENTS AND SDR IN AUTOMATED MEASURING STANDS FOR THE VERIFICATION OF AIRCRAFT TRANSPONDERS
P.I. Simonov, MTUCI, department of radio communication security, associate professor, FSUE State Research Institute of Aviation Systems, lead engineer, Ph.D.; firstname.lastname@example.org
The basic principles of receiving/transmitting signals of aviation surveillance systems in ATCRBS/Mode S modes, the main tasks performed by aircraft transponders, as well as the main regulatory documents for their verification, are considered. The ways of expanding the functionality of computer measuring systems due to the unification of hardware, built using FPGAs, and the construction of automated measuring stand on their basis are considered.
Keywords: virtual instruments, virtual measurement system, information and measuring system, FPGA, SDR, LabVIEW, PXI, aircraft transponder.
LATION OF DIGITAL ANTENSIMUNA ARRAY CALIBRATION PROCESS
E.M. Dobychina, MAI, department of radiophysics, antennas and microwave technology, associate professor, Dr.Sci.(Tech.); email@example.com
M.V. Snastin, MAI, Research and Production Center of Radio Information Metrology, engineer; firstname.lastname@example.org
A.G. Solod, MAI, postgraduate; email@example.com
The algorithm of the digital antenna array calibration process is developed, its accuracy characteristics are investigated. High performance and convergence of an algorithm for the several signal-to-noise ratios and sample sizes are obtained.
Keywords: calibration, digital antenna array, simulation model, phase error.
MODEL OF TIME-DOMAIN ELECTROMAGNETIC FIELD PROPAGATOR OF PRINTED CIRCUIT BOARDS
Yu.V. Kuznetsov, MAI, head of the department of theoretical radio engineering, professor, Dr.Sci. (Tech.); firstname.lastname@example.org
A.B. Baev, MAI, department of theoretical radio engineering, associate professor, Ph.D.; email@example.com
A.A. Gorbunova, MAI, department of theoretical radio engineering, associate professor, Ph.D.; firstname.lastname@example.org
M.A. Konovalyuk, MAI, department of theoretical radio engineering, associate professor, Ph.D.; email@example.com
The analytical time-domain electromagnetic field propagator based on Jefimenko’s equations is presented. It is shown that near-field spatial distribution of the cross-correlation function obtained by two-point time-domain measurement system can be efficiently used for the prediction of the far-field distribution of printed circuit board electromagnetic emission. The proposed approach has been validated by the far-field antenna measurements.
Keywords: electromagnetic radiated emission, Jefimenko’s equations, time-domain near-field to far-field propagator, correlation analysis, space-time distribution.
COMPLEX MODELING OF SEMICONDUCTOR STABILITRONS
A.V. Glukhov, Siberian State University of Telecommunications and Informatics (SibSUTI), department of computer-aided design systems (CAD), associate professor, Special Design Bureau of NZPP, director, Ph.D.; firstname.lastname@example.org
A.A. Kurlenko, SibSUTI, postgraduate, Special Design Bureau of NZPP, engineer-technologist;
L.G. Rogulina, SibSUTI, department of radio engineering devices, professor, Dr.Sci. (Tech.); email@example.com
The results of complex modeling of semiconductor Zener diodes are given. Three variants of models which are of interest for further use and development are considered. As a result of modeling of optimal technological route and characteristics of Zener diodes, temperature and time parameters of production of Zener diodes were selected, and profiles of the distribution of impurity concentrations in the area of guard and main p-n-junctions are revealed. By simulating the structures using the software SDevice the current-voltage characteristics of Zener diodes were obtained, the breakdown voltages, the boundaries of the breakdown region, and the distribution of currents in the devices in the operating modes were determined.
Keywords: behavioral model, complex modeling, Zener diode, current-voltage characteristic, microcircuit, component.