Begell House Inc.
Telecommunications and Radio Engineering
TRE
0040-2508
72
18
2013
APPLICATION OF SOFTWARE COMPLEX FOR QUERY PROCESSING IN THE DATABASE MANAGEMENT SYSTEM WITH NOVEL NOISE RESISTANT BISPECTRUM-ORGANIZED MODULATION TECHNIQUE IN DIGITAL WIRELESS COMMUNICATION SYSTEMS
1639-1649
10.1615/TelecomRadEng.v72.i18.10
J. T.
Astola
Tampere University of Technology, Signal Processing Laboratory, P. O. Box 553, FIN-33101, Tampere, Finland
Karen O.
Egiazarian
Tampere University, Department of Signal Processing, P. O. Box 553, FIN-33101, Tampere, Finland
V. V.
Naumenko
National Aerospace University (Kharkiv Aviation Institute), 17, Chkalov St., Kharkiv, 61070, Ukraine
A. V.
Totsky
National Aerospace University (Kharkiv Aviation Institute), 17, Chkalov St., Kharkiv, 61070, Ukraine
digital wireless communication systems
noise resistance
bispectrum
bispectrum-organized modulation
frequency triplet
A novel technique providing noise resistance in digital wireless communication systems by using bispectrum-organized modulation, demodulation procedure performed by new thirdorder signal detection test statistic and decision making by estimation of signal magnitude
bispectrum (bimagnitude) peak value is proposed. Results of computations of bit error rate obtained both for the additive Gaussian noise and mixture of the Gaussian and impulsive noise demonstrate considerable improving of noise immunity performance for proposed bispectrumorganized
modulation comparing to the common frequency shift keying (FSK).
CLIFFORD ALGEBRA IN MULTIPLE-ACCESS NOISE-SIGNAL COMMUNICATION SYSTEMS
1651-1663
10.1615/TelecomRadEng.v72.i18.20
Mikhail E.
Ilchenko
Research Institute for Telecommunications, NTUU "KPI" 37, Peremoha Ave., 03056 Kyiv, Ukraine
T. M.
Narytnyk
National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic
Institute" (NTUU "KPI") Peremohy Ave, 37, Kyiv, 03056, Ukraine
R. M.
Didkovski
Cherkassy state technological university 460, Shevchenko Blvd, Cherkassy 18006, Ukraine
the Clifford algebra
tensor product of matrices
random vector
correlation factor
noise-signal phase-shift keying communication system
code division of channels
The present paper discloses that the system of matrices for orthogonal skew-symmetric anticommuting operators is apt to generate a Clifford algebra representation in terms of matrices. The statistical properties of this particular system of operators as applied to a random vector have been examined. The operator system obtained is feasible for producing a set of orthogonal signals in the multiple-access noise-signal communication system.
METROLOGICAL MAINTENANCE OF STANDARD OPTICAL FREQUENCY GRID FOR WDM TELECOMMUNICATIONS
1665-1676
10.1615/TelecomRadEng.v72.i18.30
K. A.
Lukin
A.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine 12, Academician Proskura St., Kharkiv 61085, Ukraine
Yu. P.
Machekhin
Kharkiv National University of Radio Electronics, 14 Nauka Ave, Kharkiv 61166, Ukraine
D. N.
Tatyanko
A. Usikov Institute of Radio Physics and Electronics,National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085, Ukraine
M.B.
Danailow
Laser Laboratory, Synchrotron, SS14, km.163.5, 34012, Trieste, Italy
standard optical frequency grid
spectral interference
spectral channel division
optical telecommunication
wideband radiation source
instrument function width
The concept of applying a spectral interferometry method to creating the optical frequency grids to be used for metrological maintenance of fiber-optics telecommunications is proposed and investigated.
ON THE FEASIBILITY OF DEVELOPING A COAXIAL MAGNETRON FOR THE SHORT-WAVE PART OF MILLIMETER WAVE BAND
1677-1682
10.1615/TelecomRadEng.v72.i18.40
A. A.
Omirov
OJSC "Vladykinskiy Mechanical Plant" 58, Dmitrovskoe highway, Moscow, 127238, Russia
coaxial magnetron
millimeter wave band
higher spatial
harmonics
π-oscillation mode
Among other types of magnetrons, a coaxial magnetron (CM) exhibits the utmost performance parameters, still its minimal operation wave length is 8 mm. The reference sources report some attempts to develop CM capable of generating at a wave length below 8 mm, however the
experimental specimens failed to provide any satisfactory parameters. The related publications lack any unified concept as for CM design. The available recommendations concern the centimeter wave band and are not free of errors. The problems associated with expansion of CM
into the short-wave part of the millimeter (mm) wave band are also well known, still there are no suggestions as how to overcome them. In this paper the author suggests a technique of developing a millimeter wave band CM, comprising the most recent achievements in this area
(e.g. the possibility to use the mode of interaction between the electron beam and a higher spatial harmonics of π-oscillation mode). Special attention in this paper is given to finding possible solutions of some problems associated with the CM expansion into the short-wave part of mm wave band, like a higher density of frequency tuning, increased heat load on the segments, reduced stiffness of the cylindrical part of the anode slowing system. The suggested method provides a basis for developing a CM suitable for short-wave part of mm wave band. This study proves the feasibility of designing a functionally operative 4-mm CM.
ANALYSIS AND CALCULATION OF A HIGH-FREQUENCY FIELD DISTRIBUTION IN AN INHOMOGENEOUS RESONATOR SYSTEM OF A MAGNETRON
1683-1694
10.1615/TelecomRadEng.v72.i18.50
K. I.
Chistyakov
OJSC "Vladykinskiy Mechanical Plant" 58, Dmitrovskoe highway, Moscow, 127238, Russia
magnetron
millimeter wave band
inhomogeneous resonator system
driving inhomogeneities
The experience of developing magnetrons intended for the short-wave part of millimeter (mm) wave band proves that the most advantageous characteristics are achieved by interaction between an electron beam and a lower spatial harmonic of a degenerate oscillation mode. In commercial production, some drawbacks of this mode are eliminated by including driving inhomogeneities into magnetron's resonator system. These inhomogeneities eliminate the
intradoublet competition at the operating oscillation mode as well as the competition with the doublet components of the high-voltage mode, i.e. the competitor. The calculation procedures reported in the papers related to inhomogeneous resonator systems have certain restrictions,
which make them inapplicable at such a decisive development stage as an analysis of the effects exerted by driving inhomogeneities on the structure of a high-frequency (HF) field of the slowing system. In this paper a new calculation method is suggested, which utilizes the field theory and allows to detect all eigen frequencies and the corresponding HF-field distributions in a slowing system of a magnetron with driving inhomogeneities. The considerations are illustrated by an example calculation of a HF-field distribution and a spatial harmonics
spectrum of the slowing system of the 2-mm magnetron with the driving inhomogeneities. The allocations of the driving inhomogeneities are compared in various combinations. A novel method was developed enabling calculation of inhomogeneous resonator systems for
magnetrons operating in the short-wave part of millimeter wave band.
WORLDWIDE DETECTION OF ELF TRANSIENT ASSOCIATED WITH THE GAMMA FLARE OF DECEMBER 27, 2004
1695-1718
10.1615/TelecomRadEng.v72.i18.60
A. Yu.
Schekotov
Schmidt Institute of Earth Physics, Russian Academy of Sciences, 10 B. Gruzinskaya St., Moscow, 123995, Russia
A. P.
Nickolaenko
O.Ya. Usikov Institute for Radio Physics and Electronics,
National Academy of Sciences of Ukraine
12, Academician Proskura St., Kharkiv 61085, Ukraine
Masashi
Hayakawa
Hayakawa Institute of Seismo Electromagnetics Co. Ltd.(Hi-SEM), The University of Electro-Communications (UEC) Alliance Center #521, Advanced & Wireless and Communications Research Center, UEC, Chofu, Tokyo, 182-8585, Japan
Y.
Hobara
Research Station on Seismo Electromagnetics; UEC, Graduate School of Informatics and Engineering, Chofu Tokyo, Japan
G.
Satori
Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, GGI, Csatkai u. 6-8., 9400 Sopron, Hungary
J.
Bor
Research Centre for Astronomy and Earth Sciences, Hungarian Academy of Sciences, GGI, Csatkai u. 6-8., 9400 Sopron, Hungary
M.
Neska
Institute of Geophysics, Polish Academy of Sciences, Warsaw, Poland
ELF transient
Schumann resonance
cosmic gamma ray flare
We present experimental records containing extremely low frequency (ELF) pulses associated with the gamma ray flare of December 27, 2004. The GPS synchronized records were collected at observatories Moshiri (geographic coordinates 44.37° N; 142.24° E), Onagawa (38.43° N; 141.48° E), Esrange (67.83° N; 21.1° E), Karimshino (52.83° N; 158.13° E), Nagycenk (47.6° N; 16.7° E), and Hornsund (77.0 °N; 15.5 °E). Data demonstrate an exceptional similarity and contain characteristic pulses around the occurrence time of gamma flare. Our signal processing showed that in addition to fitting the arrival time of gamma rays, the
following model predictions were confirmed: radio pulses contain the lowest Schumann resonance mode, the source polarity was positive, the magnetic field tends to be linearly polarized, and the source bearings correspond to the direction toward the sub-flare point. These properties are in accordance with the concept of a parametric electromagnetic pulse originating from a sizeable modification of the global electric circuit by the cosmic gamma flare.
ATMOSPHERE MONITORING OVER THE KHARKIV REGION BY MEANS OF GPS
1719-1729
10.1615/TelecomRadEng.v72.i18.70
A. L.
Kovorotniy
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine
Yu. V.
Goncharenko
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine; Applied Physics Laboratory, University of Washington, Seattle, USA
V. N.
Gorobets
O.Ya. Usikov Institute for Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkov 61085, Ukraine
F. V.
Kivva
O.Ya. Usikov Institute for Radiophysics and Electronics of the National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085, Ukraine
A. I.
Gorb
Navigation and geodesic center, Electronics, Kharkiv 61018,f Ukraine
A. Yu.
Balan
Leica Geosystems AG, Representation office in Ukraine; Navigation and geodesic center, Electronics, Kharkiv 61018,f Ukraine
atmosphere
global navigation satellite system
tropospheric delay
forecasting
permanent station
The state of the atmosphere rating, weather and climate forecasting were actual for other areas of science and engineering. This paper deals with the development of methods for determining the tropospheric zenith delay (ZTD) from remote sensing data using GPS systems and of the
experimental validation of proposed algorithm. The initial data were obtained by means of a regional system of high-precision satellite geodesic measurements in the Kharkiv region (NGCNET). Later they were used to calculate the zenith delay and weather parameters in each of the receiving points. The paper describes a technique for determining the hydrostatic and "wet" (ZWD) component of the tropospheric delay based on the data obtained by the twofrequency GPS receivers. A comparison between the data calculated from the known models, and received from NGCNET is performed. It is shown that the correlation coefficients between the values of the "wet" ingredients tropospheric delay is 0.5−0.6 for summer and 0.7−0.8 for winter and spring measurements. The correlation radii of ZWD values for different seasons are estimated in this paper.