THE NEW METHOD OF DUPLEX COMMUNICATION
M.A. Bykhovsky, professor MTUCI, Dr.Sci. (Tech); email@example.com
The author proposes a which is based on the division of transmitted and received signals at each radio-station of the communication network according to the direction of their propagation (to/from the adjacent station). The proposed method uses Circulators and Interference Cancellers (ICs) in antenna feed of each station. IC supresses the interfering signals that get into an antenna feed from their transmitter due to the circulators’ imperfection. The author estimates the necessary number of ICs needed to ensure acceptable quality of signal reception. The proposed method allows to double the efficiency of use of a radio-frequency spectrum as compared to the traditional systems of frequency and time division duplexing (FDD and TDD).
Keywords: efficient of use of radio-freguency spectrum, duplex communication, interference cancellers.
RELIABILITY OF BROADCASTING
Yu.A. Chernov, the main scientific employee of the Radio Research and Development Institute, Dr.Sci. (Tech.); Chernov45@mail.ru
The bases of the theory of reliability, examples of its applications in MW broadcasting for an estimation of pair size of a zone – reliability are given, the analysis and discussion of results of estimation for analog
and digital systems is resulted.
Keywords: reliability, useful zone, analog system, digital system, parameters of receivers.
SPECTRUM-ENERGY EFFECTIVENESS OF THE SIGNALS WITH MULTYPOSITION SQUARED AMPLITUDE-INVERSION MODULATION INTO THE COMMUNICATION SYSTEMS WITH ORTHOGONAL CODING DIVISION OF THE CHANNELS
V.A. Sivov, Peter the Great Strategic Missile Force Military Academy, senior research worker, Ph.D; firstname.lastname@example.org
V.A. Vasiliev, Peter the Great Strategic Missile Force Military Academy, senior research worker, Ph.D.
V.F. Moiseev, Peter the Great Strategic Missile Force Military Academy, senior research worker, Ph.D; email@example.com
M.V. Savelieva, Peter the Great Strategic Missile Force Military Academy, research worker, Ph.D; firstname.lastname@example.org
V.I. Filatov, Peter the Great Strategic Missile Force Military Academy, senior research worker.
For the purposes of improvement the spectrum-energy characters of the Radio- communication Systems has been suggested some method to form signals with Multyposition Squared Amplitude-Inversion Modulation (MSAIM). It has been founded some analytic equations for estimation of MSAIM signals noise-immunity. Some results of estimation of MSAIM signals noise immunity after decoding are presented on the figures with coordinates formed by probability on the bit to probability signal to noise on one bit.
It has been made estimation of signals noise-immunity for decoding of the receiving information by static modeling demodulater with help of a computer. The results of the modeling are very well agreed with the analytic estimation.
There is comparative result of noise immunity of MSAIM signals decoding and squared-amplitude modulation (SAM) decoding. It has been set that energetic expenditure for transmission of information by means of MSAIM are more less with the comparison of SAM approximately about 6 dB.
Keywords: мodulation, squared amplitude modulation, multyposition squared-amplitude-inversion modulation.
2-D PROTOCOL STACK OF COGNITIVE MOBILE AD HOC NETWORK
S.N. Zharkov, senior engineer JSC Concern “Sozvezdie”; email@example.com
V.V. Bessonov, chief of department JSC Concern “Sozvezdie”
This work focuses on the functional features of cognitive mobile ad hoc networks. Two dimensional (2-D) protocol stack is proposed for the needs of research and designing of the such networks.
Keywords: cognitive mobile (ad hoc) network (MANET), protocol stack.
THE METHOD OF TRANSFORMATION CONSTELLATION DIAGRAM OF QAM-16 ALTERNATION FORM SIGNALS
A.Yu. Guzhva, Associate professor, Ph.D; firstname.lastname@example.org
S.V. Dvornikov, Military academy of communication, Professor, Dr.Sci. (Tech); email@example.com
A.A. Rusin, Military academy of communication, Associate professor, Ph.D; firstname.lastname@example.org
A.V. Pshenichnikov, Military academy of communication, Associate professor, Ph.D; email@example.com
The results of transformation of QAM-16 alternation form signals investigation are presented. The method described dependence value between required peak factor and acceptable Euclid metric is proposed.
Кeywords: noise immunity, constellation, vector signal constellation, quadrature-amplitude modulation.
RESEARCH OF THE METHODS FOR THE RECONSTRUCTION OF IRREGULARLY SAMPLED DISCRETE-TIME SIGNALS WITH UNKNOWN SAMPLING LOCATIONS
S.V. Porshnev, the head of radio electronics information systems of Ural Federal University, Ph.D; firstname.lastname@example.org
D.V. Kusaykin, post-graduate student of the Institute of Communication and Computer Science; email@example.com
In this paper researched two methods for reconstruction of non-uniform discrete-time signals with unknown sampling locations.
Keywords: non-uniform sampling, irregular sampling, reconstruction signal, unknown samples location.
AUTOMATED DESIGN SYSTEM TOPOLOGY DC POWER
A.M. Sazhnev, SIBSUTIS, professor, PhD; firstname.lastname@example.org
L.G. Rogulina, SIBSUTIS, professor, Dr.Sci. (Tech); email@example.com
The problem of the topology optimization of the uninterruptible DC power using three-dimensional simulation environment MATLAB. The research results of the power system short-circuit on the load side. Joined basic equipment systems, accessories and mains breakers based on transients. A three-dimensional model of the power supply equipment placement in the premises at the location of the battery on the racks.
Keywords: computer-aided design, power system, DC system, three-dimensional modeling.
DESIGN FEATURES OF INTEGRATED INDUCTANCES AND TRANSFORMERS FOR COMMUNICATION SYSTEMS 60 GHZ
V.G. Manzhula, Institute of communicative technologies, associate professor, vice-rector for educational and scientific work, PhD; firstname.lastname@example.org
Implementation of integrated planar inductances and transformers for microwave based on the geometry of the square or the octahedron due to the influence of the skin effect reduces the number of parameters. In the article are based on the topology of the ring or cylindrical geometry relieve release electrical charge on the substrate and increase the values of parameters such as integral elements of inductance and quality factor of transformer ratio. Using the well-known mathematical methods to calculate the inductance in the micrometer range geometrical dimensions results in inaccurate and even negative values of the design parameters. Implemented in article calculation algorithm allows to determine the inductance of the current flat spiral considering induction inside the current ring.
Keywords: inductance, topology, the integrated circuit, the skin effect, quality.
PRE-ESTIMATION OF CAPITAL COSTS FOR THE CONSTRUCTION OF URBAN GPON ACCESS NETWORK
O.L. Smirnov, JSC “IAS”, Chairman of the Board of Directors, Department of 609 MAI, Professor, Dr. Sci. (Tech.); email@example.com
Y.A. Kerzhencev, OJSC “Intellect Telecom”, Deputy Director of strategic development Department: firstname.lastname@example.org
This article provides a brief description of the model and developed on the basis of its tools for pre-estimation of capital costs for the construction of metro access network GPON. Model can be used telecom operator or integrator stages of research and pre-planning city access network in accordance with the technology FTTH (GPON) to estimate the expected capital costs of building a network of the required capacity and configuration. Analysis of the results of the model under different initial data to optimize network configuration and select the optimal set of components on the station, trunk, distribution and subscriber access network sites. The simulation results can be the basis for building a business plan designed network access and justification to its construction.
Keywords: FTTH (Fiber to the Home), GPON (Gigabit-capable Passive Optical Network), CAPEX (Capital Expenditure), station plot, trunk plot, distributive plot, subscriber plot.