RESOURCES DISTRIBUTION FOR THE AUGMENTED REALITY SERVICE PROVISIONING
M.A. Makolkina, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications (SPbSUT), department of communication networks and data transmission, associate professor, Ph.D.; makolkina@list.ru
A.I. Paramonov, SPbSUT, department of communication networks and data transmission, professor, Dr.Sci.(Tech.); alex-in-spb@yandex.ru
A.A. Gogol, SPbSUT, head of the department of television and metrology, professor, Dr.Sci.(Tech.); al. gogol@mail.ru
A.Eu. Koucheriavy, SPbSUT, head of the department of communication networks and data transmission, professor, Dr.Sci.(Tech.); akouch@mail.ru
This paper proposes the method of choice of the service system structure parameters for the augmented reality service provisioning. The features of service delivery and the quality of its experience are considered. The model of estimation of time quality indexes is offered. The formulation of the problem of resource allocation of the service system as an optimization task is provided.
Keywords: augmented reality, communication service, data transmission, quality of service, quality of experience, service system.
ANALYTICAL MODELS FOR CLUSTERING OF D2D APPLIANCES IN THE 5G NETWORKS
O.A. Hussein, SPbSUT, department of communication networks and data transmission, postgraduate; hussein.oah@spbgut.ru
This paper dedicated to clustering problems of D2D-appliances in the mobile networks, including 5G networks. The results of the analysis of outband clustering problems from the point of view of the quality of service of D2D-appliances are presented. Paper presents the results of analysis of bandwidth of D2D-appliances in the cluster and impact of the users' distribution on the cluster throughput. The results obtained can be useful in the selection or development of the clustering method.
Keywords: communication networks, Device-to-Device, 5G, clustering, quality of service, throughput, WiFi.
METHOD OF THE STABLE PATH SELECTION IN THE NETWORK WITH MOBILE NODES
N.C. Dao, SPbSUT, department of communication networks and data transmission, postgraduate; daotn88@mail.ru
A.I. Paramonov, SPbSUT, department of communication networks and data transmission, professor, Dr.Sci.(Tech.); alex-in-spb@yandex.ru
The problems of selection of the configuration and traffic routing in a wireless network with mobile nodes are considered. The model and the route selection method that take into account its stability under the relative movement of network nodes are proposed. The presented method allows choosing the route that provides the highest stability of network structure on the basis of locations and relative movements of network nodes.
Keywords: mobile network, routing, stable path, stable structure, shortest path, shortest path algorithm, graph, connectivity.
ESTIMATION OF COORDINATES AND MOTION PARAMETERS OF MANEUVERING OBJECTS BY RADAR INFORMATION
M.I. Sychev, Moscow Aviation Institute (MAI), department 410 of radar, radio navigation and airborne equipment, professor, Dr.Sci.(Tech.); sychev@mai.ru
The radar tracking of aircraft by means of multimodel filtration is considered. The approach based on the simultaneous use of models with weak and strong perturbations for hypotheses describing the motion during maneuvering is investigated. The results of modeling are presented.
Keywords: radar tracking, multimodel filtration, radar watching facilities.
SPARSE FOCUSED ANTENNA ARRAYS FOR RADIO COMMUNICATION AND RADIO COUNTERMEASURE
D.A. Vedenkin, Kazan National Research Technological University named after A.N. Tupolev (KNRTU-KAI), department of radio-photonics and microwave technologies, associate professor, Ph.D.; denis_ved@mail.ru
Yu.Eu. Sedelnikov, KNRTU-KAI, department of radio-photonics and microwave technologies, professor, Dr.Sci.(Tech.); sedhome2013@yandex.ru
The article describes the possibilities of improving spatially-distributed radio communication systems based on the use of the principle of sparse active antenna array focused in the near-field radiation zone. Ground-based antennas and antenna systems formed by radio equipment of an organized group of small-sized UAVs with coherent and incoherent focusing are considered. Evaluations of achieved effects are given, and issues of hardware implementation are discussed.
Keywords: radio communication, antenna array, near-field radiation zone, antenna, focusing, unmanned aerial vehicle, UAV.
MEASUREMENT OF RADIO COMMUNICATION ANTENNA PATTERN USING SMALL-SIZE UAV
V.I. Klassen, JSC «Radio Company «Vector», general director, Moscow Institute of Physics and Technology, professor, Dr.Sci.(Tech.); klassen@vector.ru
I.A. Prosvirkin, JSC «Radio Company «Vector», deputy general director; pia@vector.ru
Yu.Eu. Sedelnikov, KNRTU-KAI, department of radio-photonics and microwave technologies, professor, Dr.Sci.(Tech.); sedhome2013@yandex.ru
The problem of measuring of the terrestrial radio communication facilities antenna pattern by «fly around» method using small unmanned aerial vehicles (UAV) is considered. The principles of measurement organization and the composition of equipment are described. The most important key point is the developed software for processing the measurement data. The results of the experimental testing are given.
Keywords: antenna measurements, fly around method, UAV, antenna pattern, radiation pattern.
DUAL BAND ANTENNA-FEEDER DEVICE OF THE WEATHER RADAR MADE BY THE CASSEGRAIN SCHEME
E.V. Sveshnikov, MAI, associate professor, Ph.D.; sev1938@yandex.ru
The article suggests a technical solution that changes the principles of an antenna-feeder device of weather radar MRL-5. The use of Cassegrain’s scheme is proposed to reduce losses (due to the separate implementation of waveguide duct) and create conditions for better matching in each of the channels. Design improvements of the antenna-feeder device of MRL-5 are defined.
Keywords: antenna-feeder device, Cassegrain scheme, meteorological support of aviation.
PECULIARITIES OF THE TECHNICAL OPERATION OF FIBER-OPTIC COMMUNICATION LINES IN THE FAR NORTH AND SIBERIA
V.A. Andreev, Povolzhskiy State University of Telecommunication and Informatics (PSUTI), president, professor, Dr.Sci.(Tech.); andreev@psuti.ru
V.A. Burdin, PSUTI, vice-rector for science and innovation, professor, Dr.Sci.(Tech.); burdin-va@psuti.ru
A.N. Bessmertnyy, LLC EnergoTelekomStroy, head of the maintenance section of the fiber-optic communication line in Western Siberia; bessmertniyan@mail.ru
A.O. Nizhgorodov, LLC Centrsvyazstroy, deputy general director for development; anton. socol2017@yandex.ru
T.G. Nikulina, PSUTI, assistant professor, Ph.D.; ntg81@list.ru
The problems of construction and operation of aerial fiber-optic communication lines in the Far North and Siberia are considered. It is proposed to use the predictive strategies of technical operation, based on the prediction of the optical fiber service life, the localization of defects at the early stage of development, and the application of monitoring systems to improve the reliability of fiber optic communication lines.
Keywords: optical fiber, optical closure, fiber-optic communication line, low negative temperatures, microbends, technical supervision, service life, monitoring systems.
METHOD OF ELIMINATION OF THE MAIN DISADVANTAGE OF DELTA MODULATION SYSTEMS
A.A. Volkov, Russian University of Transport (MIIT), professor, Dr.Sci.(Tech.); aavolkov2009@rambler.ru
It is offered the method of elimination of the main drawback of delta modulation — the slope overload, which consists that the sign of a difference of this counting relative to the previous one is defined by the phase shift of 90 degrees to analog modulating signal with the subsequent time discretization and alignment of amplitude samples.
Keywords: modulation, overload, slope, phase shift, analog signal, sign of counting, quantization noise, gain.