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SCIENTIFIC WORK

SCIENTIFIC AND TECHNICAL JOURNAL «RADIO COMMUNICATION THEORY AND EQUIPMENT» ISSUE 2, 2010

TELECOMMUNICATION NETWORK STRUCTURE-NETWORK INDICES SYNTHESIS TAKING INTO ACCOUNT SWITCH NODE LIMITED RESOURCES

G.I. Linets, professor, Stavropol Management Institute, e-mail: kbytw@mail.ru

Analytical expressions that allow selecting the number of buffer memory elements and optimal value of burst flow density ensuring the minimal mean delay are acquired.

Key words: buffer memory, optimal value of burst flow density, minimal mean delay, relative throughput, position in the queue.


THE ACCOUNT OF RECEIVING AND TRANSMITTING DEVICES NONLINEAR CHARACTERISTICS OF ELECTROMAGNETIC CONDITIONS ESTIMATION

A.D. Korobova, associate professor, Voronezh State University, tel.: (4732) 52-79-25
E.A. KHROMYKH, leading research engineer, JSC “Concern “Sozvezdie”, tel.: (4732) 52-08-33
M.V. Kuzmin, magistrant, Voronezh State University, tel.: (4732) 78-72-34

The technique of the three-dimensional virtual structures (TEMS) formation, taking into account nonlinear characteristics of radio-electronic means and its application for the decision of electromagnetic conditions practical problems estimation is considered

Key words: modelling of electromagnetic conditions, a grouping of radio-electronic means, collateral channels, blocking, «MathCAD».

EFFICIENT WIDEBAND PSK–SIGNAL DETECTION BY QUADRATURE RECEIVER WITH INPUT BAND-PASS FILTER

G.S. Nakhmanson, leading research engineer, Voronezh Military Aviation Engineering University, tel.: (4732) 52-27-08
G.A. Bakayeva, lecturer, Voronezh Institute on State Fire-Fighting Service of RF Emergency Dept., tel.: (4732) 56-67-45
Yu.A. Ogandzhanyan, head of Scientific and Technical Department, JSC “Concern “Sozvezdie”, tel.: (4732) 77-86-94

Wideband PSK-signal reception by a quadrature receiver at noise backgrounds while searching the signal by delay time in several channels simultaneously is discussed. Correct detection probability dependencies from delay time, signal-to-noise ratio and input filter passband width have been acquired and analyzed. It has been shown that in case of parallel reception in several channels the probability of signal detection increases compared with single-channel reception.

Key words: wideband PSK-signal, detection, quadrature receiver, band-pass filter.


POTENTIAL PERFORMANCE ANALYSIS FOR LTE SOUNDING REFERENCE SIGNAL ESTIMATION

A.G. Filatov, head of sector, e-mail: filatov@kodofon.vrn.ru
V.V. Liventsev, engineer, tel.: (4732) 74-72-41
Yu.N. Pribytkov, head of sector, tel.: (4732) 74-72-41
JSC “Concern “Sozvezdie”

Maximum A posteriori Probability (MAP) algorithm is implemented for the Sounding Reference Signal (SRS) estimation in LTE. Single and multiple Code Division Multiplexing (CDM) user cases are covered. SRS estimate standard deviation depending on signal-to-noise ratio (SNR) for the channels EPA and ETU is provided.

Key words: signal estimation, method of maximum posterior probability, LTE standard communication system, noise-to-signal ratio, estimation mean-squared deviation.


DIGITAL COMMUNICATION SYSTEM FUNCTIONING UNDER RADIO ELECTRONIC COLLISION CONDITION FROM MINIMAX POSITION OF THE GAME THEORY

V.I. Nikolayev, deputy general director, JSC “Concern “Sozvezdie”, tel.: (4732) 52-27-08
A.E. Fyodorov, head of department, military unit 87406, tel.: 8-926-203-62-05

Digital communication system functioning under condition of external interference and modern jammer complex impact are discussed. From the point of minimax position of the Game Theory, analytical expressions for the reception error probability for various optimized dual collision pairs are given.

Key words: digital communication stations, radio-electronic conflict, game theory, error probability, jamming, noise immunity and jamming protection.


DIGITAL COMMUNICATION SYSTEM FUNCTIONING UNDER CONDITIONS OF RADIO ELECTRONIC COLLISION CONDITION FROM MINIMAX POSITION OF THE GAME THEORY (PART 2)

V.I. Nikolayev, deputy general director, JSC “Concern “Sozvezdie”, tel.: (4732) 52-27-08
A.E. Fyodorov, head of department, military unit 87406, tel.: 8-926-203-62-05

The analysis and signal-code structure optimization, noise-immune communication system that provides robust communication under radio electronic collision conditions is given. It has been shown that the hybrid signal-code structures based on the wideband signal and fast frequency hopping (WBS + FH) integration have the best antijam immunity. The error reception dependencies of weighted average probability are acquired for these signals.

Key words: digital communication stations, radio-electronic conflict, noise immunity and jamming protection, broadband signal, pseudorandom operating frequency tuning.


WIRELESS ACCESS TECHNOLOGY CHOICE TAKING INTO ACCOUNT TERRITORIAL DISTRICT PECULIARITIES

I.I. Fefilov, head of Scientific and Technical Department
G.A. Kashchenko, leading research engineer
A.V. Yakimenko, engineer
V.V. Yakimenko, engineer
JSC “Concern “Sozvezdie”, tel.: (4732) 55-56-06

A methodology for justifying the choice of wireless access technology taking into account given territorial district characteristic peculiarities is offered.

Key words: wireless access technology – Wi-Fi and WiMAX technologies, alternative choice, territorial district characteristics.


COMMUNICATION SYSTEM MATHEMATICAL MODEL

V.V. Bessonov, head of sector, e-mail: stvm@list.ru
A.V. Kuznetsov, senior research engineer, e-mail: kuznetsov@math.vsu.ru
JSC “Concern “Sozvezdie”

Communication system mathematical model based on the Graph theory is offered which could be used in organizing the processes of automatized designing. Moreover, the theory can also be used for system management in the course of their functioning in order to maintain their technical characteristics at the given level. The comparison with previous prototypes is made; an example of communication system description using XML language is given.

Key words: hypergraph, XML formatting language, DFT, automated communication system control, communication system, telecommunication.


ANALOG-DIGITAL PATH CALCULATION FOR SOFTWARE-DEFINED RADIO

V.A. Makovy, head of Scientific and Technical Department, JSC “Concern “Sozvezdie”, e-mail: makovij@mail.ru

A methodology for calculating the software-defined radio analog-digital path is offered. The transmission gain optimality criterion is stated. The analog path transmission gain effect on the sensitivity and dynamic range is shown; calculation examples are given.

Key words: software-defined radio means, digital radio receiver, analog-digital path, dynamic range, sensitivity, SDR, gain.


THE CONCEPT OF RADIO COMMUNICATION AGGREGOREAL SYSTEM

Yu.V. Shishkin, leading research engineer, 16th Central Research Testing Communication Institute, e-mail: bagrkn@mail.ru
Yu.V. Yasyrev, deputy head of department, JSC “Concern “Sozvezdie”, e-mail: ysrv@mail.ru

For operating under deception impact, a new radio communication system is offered which structure elements are dynamically changed depending on jam environment. «The radio station friendly community» as an element of such a system, makes it possible to solve current communication and control problems taking into account the hierarchical position of each radio station user.

Key words: radio communication system, jamming-immunity, countermeasure, adaptive jam-compensators.


WAYS TO DECREASE LOSSES IN LAZER SIGNALS PROPAGATION CHANNELS

S.V. Artyshchenko, associate professor, Voronezh State Architectural University, e-mail: artichenko@mail.ru
V.A. Dubinkin, head of department, JSC “Concern “Sozvezdie”, tel.: (4732) 52-79-41
O.V. Nikolayev, head of Scientific and Technical Centre, JSC “Concern “Sozvezdie”, tel.: (4732) 52-79-41

Ways to decrease losses in laser signal propagation channels based on decreasing the extinction ratio at the expense of molecular environment coherent preparation and laser pulse dispersion total cross-section. The optical molecule alignment in the plane perpendicular to the information pulse polarization plane resulted in their dispersion on molecules total cross-section decrease 2 to 3 times if comparing with the case of coherently unprepared medium. The dispersion decrease in lateral directions facilitates the privacy increase.

Key words: molecule, coherent control, laser radiation.


DATA TRANSFER PROTOCOL OPTIMIZATION BY HF CHANNEL

V.A. Makovy, head of Scientific and Technical Department, ĺ-mail: makovij@mail.ru
S.A. Chupeyev, head of department, tel.: (4732) 52-09-04
JSC “Concern “Sozvezdie”

Principles of designing the channel layer for data transfer protocols over HF channels are discussed; jamming-immune code selection is examined; transmission velocity calculations for various coding systems and protocol designing versions are given.

Key words: radio communication, data transfer, antinoise coding, data transfer protocol, simulation, permutation modulation, Read-Solomon codes, shortened codes.


COMBINED MULTIPLEXING SYSTEM FOR DECAMETRIC WAVE RADIO LINES UNDER DISCRETE MULTIPATH CONDITION

D.V. Gaichuk, head of chair, Stavropol Military Communication Institute of Rocket Forces, tel.: 8-962-741-54-80
A.V. Belokon, senior lecturer, Stavropol Military Communication Institute of Rocket Forces, tel.: 8-903-409-17-44
L.V. Belokon, associate professor, Stavropol State University, tel.: 8-903-409-17-43
A.O. Krivonozhkin, student, Stavropol Military Communication Institute of Rocket Forces, tel.: 8-918-881-84-38

A new combined multiplexing system that allows a high increase of data transmission rate over the radio channels with discrete multipath is offered. The offered multiplexing system supports the data exchange at 7500 bit/sec and can be realized on the digital element base.

Key words: multipath, gramian, quasi-orthogonal signals, key-shifting, echo signal.


POWER ACTIVE OSCILLATOR FOR LABORATORY INVESTIGATION

Yu.V. Zavrazhnov, head of Scientific and Technical Centre, JSC “Concern “Sozvezdie”, tel.: (4732) 52-58-22

An electrical circuit, main characteristics of power active oscillator suitable for investigating the electromagnetic radiation effect upon biological objects is given.

Key words: electromagnetic radiation, medical equipment, active oscillator, generating signal.


NEW METHOD FOR IMAGE FRACTAL COMPRESSION

D.A. Veligosha, graduate, North and Caucasian State Engineering University, tel.: 8-918-767-43-94

Method for image compression is discussed. The most common methods analysis is given, their advantages and flaws are discussed. A new image compression method worked out on the base of image compression generalized algorithm is offered which allows realizing compression without loosing the quality.

Key words: fractals, algorithm, domain, rank area, quadrant, wavelet transformation.


PROGRAM INTEGRITY CONTROL USING THE GRAPH CONSTRUCTION METHOD

A.E. Fyodorov, head of department, military unit 87406, tel.: 8-926-203-62-05A.P. Vashchenko, Armed Forces General Staff of RF
V.V. Strelnikov, head of department, JSC “Concern “Sozvezdie”, tel.: (4732) 52-09-06
A.V. Tolcheyev, deputy head of Scientific and Technical Department, JSC “Concern “Sozvezdie”, tel.: (4732) 52-09-06
M.V. Vostrikova, graduate, JSC “Concern “Sozvezdie”, tel.: (4732) 52-09-06

The possibility to control the program integrity when modifying the program components is discussed. The component-equality decision-making algorithm and criterion developed on the base of the approach developed in the frame of semantic processing is offered.

Key words: information conflict, continuity testing, modification, objective function, graph, bijective mapping, iterative approaching.


ORIGINATION KINETICS AND DISTRIBUTION BY METAL CLUSTER DIMENSIONS AT VACUUM CONDENSATION FROM TWO-COMPONENT STEAM

D.E. Andrusevich, associate professor, Voronezh State Engineering University, tel.: (4732) 78-38-86
D.B. Omorokov, engineer, JSC “Concern “Sozvezdie”, e-mail: saref@list.ru
N.S. Pashkevich, engineer, Voronezh State Engineering University, e-mail: pns-vrn@mail.ru
A.N. Smolyaninov, engineer, JSC “Concern “Sozvezdie”, e-mail: alexxx2@bk.ru
E.V. Shvedov, professor, Voronezh State Engineering University, e-mail: karl12@yandex.ru

Kinetics dependencies and cluster distribution by dimensions in function of two-component steam condensation process parameters are estimated. Computation for two model pairs «metal-metal» with close and different values of superficial diffusion activation energy is carried out. It has been stated that separation by composition is possible when component superficial diffusion activation energy has distinct values.

Key words: discrete nanostructures, vacuum condensation, discontinuous film, cluster, origination and growth kinetics, critical nucleus.