Items of № 9, 2022

The Electrosvyaz Magazine is one of the leading science & technical magazines in Russia.

FEATURES OF THE MODERN DEVELOPMENT OF PROFESSIONAL MOBILE RADIO COMMUNICATION SYSTEMS

D.A. Klimov, FSBI NIIR, director of the ZNIIS directorate, associate professor, Ph.D.; klimov@niir.ru

M.Yu. Spodobaev, FSBI NIIR, first deputy general director, associate professor, Ph.D.; mspd@niir.ru

The relevance of the development of a unified national standard for professional mobile radio communication (PMR) is shown. The functional requirements for systems and means of professional radio communication are defined; the basic requirements for the unified national standard of PMR are described.

Keywords: professional mobile radio communication, radio communication means, radio communication systems, PMR standard.

LEGAL REGULATION OF PROFESSIONAL MOBILE RADIO COMMUNICATIONS IN THE RUSSIAN FEDERATION

S.I. Tynyankin, FSBI NIIR, director of research center, senior researcher, Dr.Sci.(Tech.); tynyankin@niir.ru

V.M. Balyukov, FSBI NIIR, deputy director of research center; balyukov@niir.ru

V.N. Dogadchenko, FSBI NIIR, lead specialist; dogadchenko@niir.ru

A.A. Zhilchenko, FSBI NIIR, lead engineer; zhilchenko@niir.ru

V.N.Timofeev, FSBI NIIR, head of department; timofeevvn@niir.ru

The analysis of normative legal acts in force in Russia in the field of professional mobile radio communication is carried out. Directions for further improvement of the legal regulation of this type of radio communication are proposed.

Keywords: professional mobile radio communication, legal regulation, normative legal act, DMR standard.

FEATURES OF THE ORGANIZATION OF VHF RADIO COMMUNICATIONS ON THE INLAND WATERWAYS OF RUSSIA

S.A. Vikhrov, NavMarin LLC, deputy general director; sergey@navmarine.ru

E.E. Chumikov, NavMarine LLC, technical director; chumikov@navmarine.ru

The main distinguishing features of the organization of VHF radio communications on the inland waterways of Russia, as well as special requirements for radio communications in the «ship-to-ship» and «ship-to-shore» links are considered. A promising digital distress communication system is presented, which will significantly increase the level of navigation safety and the efficiency of rescue operations on inland waterways. The problem of ensuring safety during the transportation of dangerous goods by ships in terms of radio stations allowed for use in such cases is discussed.

Keywords: State Commission for Radio Frequencies, SCRF, inland waterways, land mobile service, land fixed service, radio stations, digital distress communication system.

DEMODULATION ALGORITHMS FOR MIMO SYSTEMS BASED ON CHANNEL MATRIX PSEUDO-INVERSION AND MODIFIED KALMAN FILTER

E.I. Glushankov, The Bonch-Bruevich Saint Petersburg State University of Telecommunications (SPbSUT), department of radio systems and signal processing, professor, Dr.Sci.(Tech.); glushankov57@gmail.com

D.I. Kirik, SPbSUT, dean of the faculty of radio communication technologies, associate professor, Ph.D.; d_i_kirik@mail.ru

D.A. Tsvetkov, SPbSUT, engineer; mitya.tsvetkov.1@mail.ru

E.A. Kurbatova, SPbSUT, engineer; hggbvuey@gmail.com

Demodulation algorithms for MIMO systems are proposed, optimal in terms of the minimum mean square error criterion, based on the channel matrix pseudo-inversion and a modified Kalman filter. The accuracy of algorithms and sensitivity to deviations of model parameters are investigated by simulation modeling in MATLAB environment. Sensitivity is investigated by the additional movement of the filtration quality indicator with variations in the model parameters.

Keywords: demodulation, MIMO, pseudo-inversion, MATLAB, Kalman filter, sensitivity.

ORGANIZATION OF LARGE-SCALE MOBILE RADIO COMMUNICATION SYSTEMS BASED ON THE APEX COMPLEX

G.Yu. Puchkov, Research Institute of Special Equipment of the Federal Public Institution «Research and Production Association «STiS» of the Ministry of Internal Affairs of Russia, leading researcher, Ph.D.; pgu7@ya.ru

D.P. Pavelkin, JSC Infotest-R, leading engineer; dpavelkin@infotestr.ru

A.I. Kian, JSC Infotest-R, general director; akian@infotestr.ru

An integrated approach to the creation of land mobile radio communication systems based on the domestic digital complex of APEX base equipment and subscriber radio stations is presented. The problems of organization of radio communication that arise during the deployment and operation of large-scale communication systems, and measures to solve them, are considered. Proposals are given for organizing the protection of communication channels and the use of virtual machines to improve the reliability of large-scale radio communication systems.

Keywords: APEX radio complex, АРСО 25, DMR, digital radio communication, site, base station, virtual machine, server, scrambler, CIPF, numbering plan, radio subscriber, import independence.

TIME-TESTED TRUNKING COMMUNICATION

A.A. Vasenina, JSC ONIIP, head of sector; vasenina@oniip.ru

V.V. Ryabikov, JSC ONIIP, senior researcher; ryabic.49@mail.ru

The history of the development of professional mobile communication systems, as well as the practice of building and operating communication systems that provide subscriber access are briefly described. The comparison of the main characteristics of trunking communication standards is given and, based on the results of the analysis, the main advantages of the TETRA standard are identified. Information on the equipment of TETRA standard communication systems manufactured by JSC ONIIP, as well as the experience of its application at major international events is presented. Attention is focused on the existing problems of trunking systems, in particular on low data transfer rates.

Keywords: professional mobile radio communication system, digital trunking system of mobile radio communications TETRA.

TEMPORARY TERRITORY OF SPECIAL STATUS AS A METHOD OF COUNTERING UNAUTHORIZED USE OF MOBILE RADIOTELEPHONE COMMUNICATIONS

S.M. Kolotushkin, Russian State University of Justice, professor, Dr.Sci.(Jur.), Ph.D.; kolotushkinsm@mail.ru

R.M. Zhilyaev, FSI Research Institute of the Federal Penitentiary Service Russia, deputy head of a department; giliaev_rustam@mail.ru

V.O. Kovalenkova, FSI Research Institute of the Federal Penitentiary Service Russia, main specialist; vasilisakovalenkova@yandex.ru

A new method is proposed to counter the unauthorized use of mobile radiotelephone communications by persons placed under house arrest, which consists in creating a temporary territory of a special status. This method involves the creation of a system for blocking SIM cards of cell phones used in a specific territory, the exact coordinates of the borders of which are transmitted to telecom operators. If a phone call, SMS message or Internet traffic has passed from a given territory or arrived at it, then the SIM card is automatically blocked by the telecom operator.

Keywords: house arrest, ban on the use of communications and the Internet, counteraction to unauthorized use, temporary territory of special status.

NOISE-RESISTANT CODING IN PROFESSIONAL MOBILE RADIO COMMUNICATIONS OF THE DMR STANDARD

S.I. Tynyankin, FSBI NIIR, director of research center, senior researcher, Dr.Sci.(Tech.); tynyankin@niir.ru

V.M. Balyukov, FSBI NIIR, deputy director of research center; balyukov@niir.ru

V.A. Mineev, FSBI NIIR, lead engineer; mineew1@mail.ru

A.N. Kmelkov, FSBI NIIR, lead engineer, associate professor, Ph.D.; xan47@list.ru

The analysis of noise-resistant coding, regulated by the international standard DMR, was carried out. The channel noise-resistant codes, verification of the integrity of transmitted data and channel interleaving are considered in detail.

Keywords: coding, noise-resistant codes, DMR standard, professional mobile radio communication.

ANALYSIS OF THE OPERATION OF THE TRACKING FILTER FOR THE DIAGRAMMING SCENARIO IN ULTRA-DENSE MILLIMETER-WAVE RADIO ACCESS NETWORKS

G.A. Fokin, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications (SPbSUT), department of radio communication and broadcasting, professor, Dr.Sci.(Tech.); grihafokin@gmail.com

I.V. Grishin, SPbSUT, department of communication networks and data transmission, Ph.D.; i.v.grischin@gmail.com

D.V. Okuneva, SPbSUT, department of software engineering and computer facilities, associate professor, Ph.D.; darina_okuneva@mail.ru

A.S. Borodin, representative of PJSC Rostelecom in the ITU, Ph.D.; aleksey.borodin@rt.ru

This paper is devoted to evaluating the influence of the tracking filter on the accuracy of coordinate estimation of mobile devices performing maneuvers of different intensity in the base station radio coverage zone. Increasing the accuracy of coordinate estimation of devices operating in the millimeter wavelength range has a positive effect on the quality of formation of the three-dimensional radiation pattern of the base station antenna array. Based on the presented mathematical model, using the developed simulation program, an analytical study of the tracking filter operation at different intensity of user terminal maneuvers in the horizontal plane was performed.

Keywords: azimuth, elevation angle, flat equidistant antenna array, tracking filter, radiation pattern.

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