CONNECTION OF ELECTRONIC SIGNATURE MODES TO ELECTRONIC DOCUMENT PROGRAM COMPLEXES
N.B. Bakanova, Keldysh Institute of Applied Mathematics of the Russian Academy of Sciences (KIAM), leading researcher, Dr.Sci.(Tech.); email@example.com
D.V. Volchkov, KIAM, lead software developer; firstname.lastname@example.org
The article considers the implementation of electronic signature modes for a software complex for interaction between electronic document management systems. The project of realization of a module for the formation of a container for sending electronic documents signed with an electronic signature in the format of IEDMS 2.7 is proposed.
Keywords: document management, interdepartmental electronic document flow, electronic signature of the document.
RESEARCH OF THE USER MOVEMENT AND TRAFFIC MODELS FOR APPLICATIONS OF AUGMENTED REALITY
M.A. Makolkina, The Bonch-Bruevich Saint-Petersb State University of Telecommunications (SPbSUT), department of communication networks and data transmission (СN and DT), associate professor, Ph.D.; email@example.com
Integration of augmented reality (AR) and the IoT requires the development of new service and traffic models, as well as a different approach to the assessment of the quality of perception of provided services. AR traffic pattern constructed depending on the change of user location and a user perception model that takes into account the type of data, the amount of information, and the significance of the data are presented. The traffic model consists of three models: service space, user environment, and user behavior. It is proposed to consider the user as an object of the queue system, receiving different data from surrounding objects.
Keywords: augmented reality, user movement model, traffic model, service model, Internet of Things.
CLASSIFICATION AND RESEARCH OF INDUSTRIAL INTERNET OF THINGS TRAFFIC BY A MODEL NETWORK
V.A. Kulik, SPbSUT, department of СN and DT, postgraduate; vslav. firstname.lastname@example.org
R.V. Kirichek, SPbSUT, department of СN and DT, professor, Dr.Sci.(Tech.); email@example.com
A.I. Paramonov, SPbSUT, department of СN and DT, professor, Dr.Sci.(Tech.); firstname.lastname@example.org
The research of various types of networking in the Industrial Internet of Things (IIoT) is conducted, the classification and analysis of IIoT traffic of industrial equipment are presented. The model network of packet generation for the simulation of industrial equipment operation in communication networks is offered.
Keywords: Internet of Things, Industrial Internet of Things, traffic analysis, model network.
PROBABILISTIC METRICS OF CACHED TRAFFIC SERVICE IN A HETEROGENEOUS TERAHERTZ WIRELESS NETWORKS
V.I. Petrov, SPbSUT, department of СN and DT, postgraduate; vit. email@example.com
D.A. Moltchanov, Peoples' Friendship University of Russia, department of applied probability and informatics, associate professor, Ph.D.; moltchanov. firstname.lastname@example.org
Y.A. Koucheryavy, National Research University Higher School of Economics, department of informatics and business in information technology, professor, Dr. Sci. (Tech.); yevgeni. email@example.com
The analysis of probabilistic characteristics of mobile user service, when watching streaming video while dynamically switching between GHz and THz wireless networks, is performed. The network model with a single long-range GHz wireless access point (AP) and several low-range THz APs is considered. For the described model, the major service characteristics for mobile users constantly watching video streams are derived. It is shown that the use of even a small number of THz APs can significantly offload the GHz AP from the video traffic.
Keywords: terahertz band, wireless networks, heterogeneous networks.
METHOD OF SIMULTANEOUS ESTIMATION OF RANGES AND SPEEDS OF TARGETS IN SHORT-RANGE RADAR SYSTEMS
D.I. Sapronov, Moscow Aviation Institute (MAI), department of radiolocation, radio navigation and avionics equipment, postgraduate, assistance lecturer; danil. firstname.lastname@example.org
I.V. Kamenskiy, MAI, department of radiolocation, radio navigation and avionics equipment, associate professor, Ph.D.; ilya. email@example.com
The article proposes a method of simultaneous estimation of distances and speeds in short-range radar systems using ultra-wideband multi-frequency signals. The analysis of the two-dimensional convolution function for the proposed method in the coordinates of distance and speed is carried out. Examples of using the obtained expression for signals with different time-frequency parameters are given. The evaluation of range and speed resolution, a one-digit measurement period over the range, as well as the level of side-lobes for some types of signals were made.
Keywords: discrete frequency-coded signals, stepped-frequency signals, ultra-wideband signals, range and velocity simultaneous estimation method.
METHODS TO IMPROVE THE DETECTION EFFICIENCY OF SMALL-SIZED AND LOW-SPEED OBJECTS OF SURFACE SURVEILLANCE RADARS
A.E. Ananenkov, MAI, Scientific center of special radio-electronic systems, deputy chief of a laboratory, Ph.D.; firstname.lastname@example.org
V.M. Nuzhdin, MAI, department 410, associate professor, Ph.D.; email@example.com
D.V. Marin, MAI, department 410, postgraduate; firstname.lastname@example.org
V.N. Skosyrev, Bauman Moscow State Technical University, chief researcher, professor, Dr.Sci.(Tech.); email@example.com
The conditions for the development of advanced airport surface movement radars based on ultrashort-pulse radar technology were examined. These radars can detect small-sized unmanned aerial vehicles. The main parameters of these airport surface movement radars were evaluated. Features of reflected radar signal processing algorithm, which allows detecting the smallsized and low-speed objects, were formulated.
Keywords: interclutter visibility, airport surface movement radar, moving target indication, small-sized object, safety of air transport, ultrashort-pulse radar technology.
PERSPECTIVE METHODS OF INTERNET PROTOCOLS OBFUSCATION
A.O. Nevolin, MAI, department 402, associate professor, Ph.D.; nevolin. firstname.lastname@example.org
The problem of using cryptographic protocols in data exchange is considered. An alternative way to protect data without encrypting is proposed. Basic principles of obfuscating and protocol choice are presented. Method of choosing protocol with the lowest probability of obfuscation detection is introduced.
Keywords: information security, encryption, man-in-the-middle, steganography, hidden traffic.
NEW APPROACHES TO REGULATING THE USE OF A RADIO-FREQUENCY SPECTRUM ON BORDERS OF REGIONS OF THE RUSSIAN FEDERATION
К.О. Dyu, PJSC MegaFon, senior manager, associate professor, Ph.D.; konstantin.O.Dyu@Megafon.ru
D.V. Vasilyev, PJSC MegaFon, manager, Ph.D.; dvasilyev@Megafon.ru
S.P. Frolova, PJSC MegaFon, manager; sfrolova@Megafon.ru
In Russia, there is a tough state spectrum management, including the coordination of frequency assignments in the border areas of the neighboring regions of the country. The article proposes new approaches to the spectrum management, which provide participation in the consideration of frequency license application not only government agencies but also interested operators.
Keywords: radio frequency spectrum, frequency assignments, electromagnetic compatibility, spectrum management, experimental studies, frequency license application, refarming, technological neutrality.
METHOD OF FREQUENCY SYNTHESIS WITH PHASE SPLITTING IN PLL. PART II
V.I. Koslov, independent researcher, Ph.D.; email@example.com
It is considered a new method of frequency synthesis, which consists in splitting the phases of the reference and signal pulse sequences in a phase-locked loop (PLL) system, followed by their phase comparison in a multi-frequency phase detector to obtain a control signal for the PLL system. The described method allows the construction of frequency synthesizers with excellent characteristics of the spectral purity of the signal and agility, with a high-frequency resolution, low power consumption, and cost. In the second part of the article, the spectral characteristics of synthesizers based on the proposed method in comparison with existing methods of synthesis and the possibility of reducing power consumption are considered.
Keywords: frequency synthesizer, spectral purity, agility.
PRINCIPLES OF DWDM BACKBONE DESIGN BASED ON THE ACTIVE BUILDING LENGTH OF AN OPTICAL CABLE
K.E. Zaslavsky, Siberian State University of Telecommunications and Informatics, professor, Ph.D.; firstname.lastname@example.org
Design of DWDM lines, containing active optical cable construction lengths, is proposed. Structural diagrams of connecting boxes are developed. Examples of calculations confirming the performance of the proposed DWDM line design are given.
Keywords: backbone, DWDM, amplifier, active construction length, nonlinear interference.
DEVELOPMENT OF LDPC ENCODER-DECODER ON FPGA
M.Y. Zinchenko, National Research University Moscow Power Engineering Institute (NRU MPEI), postgraduate; ZinchenkoMY@gmail.com
A.M. Levadniy, NRU MPEI, undergraduate; LevadniyAM@gmail.com
Yu.A. Grebenko, NRU MPEI, professor, Dr.Sci.(Tech.); GrebenkoYA@mpei.ru
The development of low-density parity-check (LDPC) code DVB-S2 standard encoder and decoder architectures for field-programmable gate array (FPGA) are presented. The decoder allows «soft» iterative coding for several coding levels and lengths of the standard. Methods to improve performance and decoder architecture are described. The results of the comparison of our decoder’s correction capability and the built-in MATLAB LDPC-code decoder are presented. The encoder and decoder modules were synthesized and the used FPGA resources were determined.
Keywords: forward error correction coding, LDPC, encoder, decoder, FPGA.