THE COMMUNICATION INFRASTRUCTURE OF THE EXTREME NORTH AS A BASE FOR CREATING A COMMON IT-ENVIRONMENT
D.V. Sakhrov, Roskomnadzor, head of Office for the Northwestern Federal District, The Bonch-Bruevich Saint-Petersburg State University of Telecommunication, associate professor, Ph.D.; D. Sakharov@rkn.gov.ru
S.E. Melnikov, Roskomnadzor, deputy head of Office for the Northwestern Federal District, Ph.D.; S. Melnikov@rkn.gov.ru
S.I. Schterenberg, The Bonch-Bruevich Saint-Petersburg State University of Telecommunication, postgraduate student; shterenberg. stanislaw@yandex.ru
The article describes the current problems and situation with communication infrastructure in the Arctic Zone and the territories of Extreme North. It is about creating modern communication networks in the Arkhangelsk region and the Nenets Autonomous district.
Keywords: communication infrastructure, fixed telephony, movable radiotelephony, broadband Internet, Extreme North.
THE TRAFFIC IN THE CUSTOMIZED SALVATION MANAGEMENT SYSTEM IN CASE OF DISASTER
A.I. Paramonov, The Bonch-Bruevich Saint-Petersburg State University of Telecommunications, professor, Dr.Sci.(Tech.); alex-in-spb@yandex.ru
V.K. Sarian, FSUE NIIR, science consultant, academician of NAS RA, professor of MIRT and MTUSI, Dr. Sci.(Tech.); sarian@niir.ru
N.V. Gorovaya, CJSC NGO, head of department of design of communication systems, ITS department; gorovaya_70@mail.ru
A.S. Lutokhin, FSUE NIIR, engineer; lutokhin. alexander@yandex.com
V. Salomatina, Taras Shevchenko Transnistria State University, department chairman of business informatics and information technologies; salolew@mail.ru
The article is devoted to well-known communication networks problem- an avalanche-like increase in traffic accompanying emergency events occurrence. This problem is relevant for communication networks of all generations. It is proposed to reduce traffic outburst by using a new class of wireless sensor networks — sensor control networks (Recommendation ITU — T Y.2222), developed by the authors form FSUE NIIR. The calculations show that the use of sensor control networks may improve the stability of infocommunication system in case of vulnerabilities of various kinds, including congestion of public communication networks, by informing subscribers in the emergency area in a timely manner.
Keywords: customized management, information environment, wireless sensor networks.
BIT RATE RISE IN FIBER-OPTIC TRANSFER SYSTEMS
V.N. Gordienko, MTUCI, professor of «Multichannel Telecommunication Systems» chair, Dr.Sci.(Tech.); mes1@mtuci.ru
V.N. Korshunov, MTUCI, professor of «Multichannel Telecommunication Systems» chair, Dr.Sci.(Tech.); mes@mtuci.ru
N.A. Shishova, MTUCI, head of «Multichannel Telecommunication Systems» chair, associate professor, Ph.D.; nadevda1972@gmail.com
Bit rate rise methods and facilities for the fiber-optic wavelength-division multiplex systems are being analyzed and estimated. Bit rate limits are being evaluated and bit rate assessment approach is being developed using the spectral — wave efficiency criterion (parameter). Multiplexing coefficients system is being built and analytical results for bit rate estimation are presented.
Keywords: fiber-optic wavelength-division multiplex systems, information bit rate, spectral — wave efficiency, space multiplexing, multiplexing coefficients.
MODIFIED OQPSK-4 IN OPTICAL COMMUNICATION SYSTEMS WITH POLARIZATION-MULTIPLEXED SIGNALS
A.N. Rudnev, FSUE «ORION», the main specialist; polygon58@mail.ru
On the base of algebraic-related sequences proposed the non-coherent communication system with a new modulation format modified OQPSK-4 and polarization multiplexing, invariant for phase-noise and frequency deviation of local oscillators.
Keywords: coherent demodulation, polarization multiplexing, algebraic-related sequences, phase-noise.
CALCULATION OF CHANGES SIGNAL POWER IN SPECTRAL CHANNELS DWDM DUE TO STIMULATED RAMAN SCATTERING
I.S. Volosazhir, Siberian State University of Telecommunications and Information Sciences (SIBSUTIS), postgraduate student; volosagiri@yandex.ru
K.E. Zaslavsky, SIBSUTIS, professor of the department multichannel telecommunication and optical communication, Ph.D.; zaslavskyke@mail.ru
The paper presents methods for calculating power loss signal in spectral channels of optical transmission systems DWDM due to stimulated Raman scattering (SRS). Examples of calculations of power losses in the spectral channels DWDM due to SRS, correction factor SRS and the deterioration of the optical signal / noise ratio (OSNR).
Keywords: stimulated Raman scattering, DWDM, correction factor SRS, deterioration OSNR
CLASSIFICATION OF EXTERNAL FACTORS INFLUENCING THE PARAMETERS OF THE OPTICAL FIBER
A.E. Gayvonenko, SIBSUTIS, teacher of the department «Communication lines»; anikeeva-sasha@mail.ru.
I.B. Yelistratova, SIBSUTIS, associate professor of the department «Communication lines»; Irina_Borisovna@bk.ru
In this article, the authors proposed to divide the external factors into two types: the influence of environmental conditions and factors as a result of human activity. Further separately dismantled for structural diagrams of the effect of environmental conditions consequences of their actions, and the impact factors due to human activities with their consequences. As a result, the assessment of integral impact, which is constructed using the theory of S — graphs on the basis of objective data monitoring and measurement of reliability parameters of fiber optic transmission lines. The result is a number of significant proposals for the protection of fiber optic cables from the influence of external factors.
Keywords: optical fiber, external factors; security features.
ESTIMATION OF FEASIBLE EXPOSURE OF LIGHTNING GAMMA RAYS UPON OPTICAL FIBER CABLE
S.A. Sokolov, MTUCI, professor, Dr. Sci. (Tech.); stanislav.a.sokolov@gmail.com
There is considering gamma-rays influence upon entirely dielectric optical fiber communications cables, that is arising during lightning strokes. When height rise quanta number in air increase strongly and at altitude about 2000 meters above sea level severe effects are enable for such cables. In this paper there are considering mechanism and numerical analysis of lightning influence consequences.
Keywords: lightning discharge, gamma radiation, half-value layer, radiation dose, exposure rate.
EXPERIMENTAL RESEARCHES OF OPTICAL FIBERS' TRANSVERSE DEFORMATIONS
I.V. Bogachkov, Omsk State Technical University (OmSTU), docent of «Communication means and information security» department, Ph.D.; bogachkov@mail.ru
V.A. Maystrenko, OmSTU, chief of «Communication means and information security» department, professor, Dr.Sci.(Tech.); mva@omgtu.ru
The results of experimental researches of the optical fibers characteristics with different types of transverse force pressures influences based on Brillouin backscattering spectrum analysis are presented in this paper.
Keywords: Brillouin reflectometry, Brillouin backscattering, early diagnostics, a reflectometer, optical fiber.
THE FIRST STEPS OF THE DRM + STANDARD IN THE RUSSIAN FEDERATION
A.G. Vladyko, The Bonch-Bruevich Staint-Petersburg University of Telecommunications, head of Research Department, Ph. D; vladyko@sut.ru
Yu.A. Kovalgin, The Bonch-Bruevich Staint-Petersburg University of Telecommunications, professor, head of Department radio communication and broadcasting, Dr.Sci. (Tech.); kowalgin@sut.ru
V. Myshyanov, The Bonch-Bruevich Staint-Petersburg University of Telecommunications, chief specialist of the scientific work of students; mishyanov@gmail.com
Described experimental results of broadcasting in the DRM standard in the VHF. Tests were conducted in St. Petersburg in 2015, the test broadcasting in this format in the Russian Federation was carried out for the first time. For stationary reception defined threshold values of the signal / noise ratio required for operation of the system in real conditions. The graphs of changes in signal parameters in the mobile reception mode for routes with different types of urban development. Studies have confirmed the compliance of the technical parameters of DRM (E mode) stated as standard values.
Keywords: digital audio broadcasting, DRM, field trials.
NOISE IMMUNITY ANALYSIS OF RADIO SYSTEM’S INFORMATION TRANSFER WITH THE QUADRATURE COMPENSATION OF NARROW-BAND INTERFERENCE SIGNALS
A.I. Fomin, Moscow Aviation Institute (National Research University), docent, professor, Ph. D.; vms402@mail.ru
A.K. Yalin, Institute of academician A. L. Minz’s name, head of department of Radio Engineering, Ph. D.; YalinAndrey@hotmail.com
Influence of the quadrature compensator of narrow-band interfering signals, used at compensation of interfering signals in radio systems of transfer of digital information with a speed more than 10 Mbps, on quality of reception of QPSK-LH signal against white noise and signals of narrow-band interferences is analyzed in work.
Keywords: radio communication, noise-immunity, compensation of narrow-band radio-interference signals.