Begell House Inc.
Telecommunications and Radio Engineering
TRE
0040-2508
68
8
2009
A New Class of Orthogonal Kravchenko WA-System Functions {ha(t)}
649-666
10.1615/TelecomRadEng.v68.i8.10
Victor Filippovich
Kravchenko
Kotelnikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 11-7, Mokhovaya St., Moscow 125009, Russia; Bauman Moscow State Technical University, 5, Vtoraya Baumanskaya St., Moscow 105005 Russia; Scientific and Technological Center of Unique Instrumentation, Russian Academy of Sciences, 15, Butlerova St., Moscow 117342, Russia
D. V.
Churikov
V.A. Kotelnikov Institute of Radio Engineering and Electronics of RAS
On the basis of the ideas set forth in [1-11] construction of the new orthogonal Kravchenko wavelets is considered. This report consists of three parts. In the first part the construction of basic atomic function (AF) is stated and its basic properties are resulted. In the second part basic wavelets on the basis of AF ha(t) are constructing and prove. In the third part the characteristics of new wavelets are analyzed and compared with known following wavelets: the Meyer and Kotelnikov-Shannon ones.
Entropy-Like Measure of Background Content for Image Retrieval and Sorting in Large Databases
667-675
10.1615/TelecomRadEng.v68.i8.20
S. K.
Abramov
Department of Transmitters, Receivers and Signal Processing, National Aerospace University (Kharkiv Aviation Institute), 17 Chkalov St.,
Kharkiv, 61070, Ukraine
N. N.
Ponomarenko
National Aerospace University, Kharkiv, Ukraine
O. B.
Pogrebnyak
Instituto Politecnico Nacional, Mexico, D.F., Mexico
An approach to analysis of properties of color RGB images based on analysis of entropy-like measure for each component is put forward. It is demonstrated that the proposed measure can be effectively used for indexing, search and retrieval such images from large databases that contain a large percentage (sufficient amount) of pixels belonging to homogeneous color background. This allows indexing and sorting images according to this feature and exploiting this information for retrieval images from large size databases. The proposed measure can be also useful for further processing of images since it might produce useful information for strategy of image feature determination. The results of testing the entropy-like measure in processing of Yandex (www.yandex.ru) database of image thumbnails are also presented.
Mathematical Model for Computation of Network Characteristics Using a Guided Wave Method
677-686
10.1615/TelecomRadEng.v68.i8.30
S. L.
Gavlievskii
Volga District State Academy of Telecommunications and Informatics, Samara, Russian Federation
The article analyzes a mathematical model describing streams in network branches in the form of a system of nonlinear algebraic equations. An algorithm for solution of the system of equations by means of an iteration method is given.
The Single-Position Method for Determining the Coordinates of a Radio-Frequency Source in the Near-Field Region
687-695
10.1615/TelecomRadEng.v68.i8.40
L. I.
Diduk
Federal State Research Testing Center of Electronic Warfare and Evaluation of Concealment Decrease, Voronezh, Russian Federation
V. I.
Nikolskii
Federal State Research Testing Center of Electronic Warfare and Evaluation of Concealment Decrease, Voronezh, Russian Federation
S. N.
Panychev
Voronezh State Technical University, Voronezh, Russian Federation
A brief comparative analysis of the existing single-position methods used for determining the coordinates of radiating objects in the near-field region is made. The description of a new method for determining the position of the radio-frequency source, based on Doppler modulation of a spherical wave front of the received signal in the Doppler receiving channel with a rotary antenna, is provided. Errors of measurement of the range and angular coordinates of the radio-frequency facility are evaluated. Recommendations for practical application of the method in linear and nonlinear radio-position finding and radio-range finding are formulated.
Performance Comparison of Adaptive Linear Equalized and Adaptive MMSE-DFE
697-708
10.1615/TelecomRadEng.v68.i8.50
Saniay Kumar
Sharma
Dept. of Electronics and Communication Engg, Krishna Institute of Engg. and Technology, 13 KM stone, Ghaziabad-Meerut Road, Ghaziabad-201206
S. Naseem
Ahmad
Department of Mathematics, Jamia Millia Islamia, New Delhi - 110025
The paper compares the performance of an adaptive linear equalizer and adaptive MMSE DFE. In mobile communication, intersymbol interference (ISI) caused by multipath in bandlimited (frequency selective) time dispersive channels distorts the transmitted signal, causing bit errors at the receiver. ISI has been recognized as the major obstacle to high-speed data transmission over wireless channels. Equalization is a technique used to combat ISI. Linear adaptive equalizers do not perform well on channels, which have deep spectral nulls in the passband. As a more powerful receiver algorithm, we prefer a decision feedback equalizer (DFE), which has better immunity against the spectral channel characteristics. In the paper, we have investigated various adaptive equalizers using the recursive least-squares (RLS) algorithm for wireless communication systems. In that regard, both linear equalizer and non-linear DFE with RLS algorithm have been examined in multipath fading channel model. We have also examined the influence of some important parameters, such as a tap number of the adaptive equalizers, and forgetting factor of the algorithm. Simulation results show that DFE perform much better than adaptive linear equalizer. Further the theoretical results have also been verified through computer simulations.
Algorithm for Rapid Assessment of Reliability of Information Telecommunication Systems under the Conditions of Initial Data Uncertainty
709-719
10.1615/TelecomRadEng.v68.i8.60
S. A.
Kozhukhov
Academy of the Russian Federal Security Service, Orel, Russian Federation
An algorithm for rapid assessment of reliability of information telecommunication systems under the conditions of initial data uncertainty, which reduces the time for reconfiguration of the ITCS structure, is analyzed.
Systems of Internet Traffic Reservation. Effect of Document Change in the Global Network
721-725
10.1615/TelecomRadEng.v68.i8.70
A. M.
Sukhov
Samara State Aerospace University, Samara, Russian Federation
D. G.
Dolgikh
Samara State Aerocosmic University, Samara, Russian Federation
This article concludes the series of works devoted to traffic reservation systems. In this article, the model presented in the previous parts is generalized to the case of dynamic changes in the global network information content.
Instrument for Measuring the Complex Permittivity of Biological Objects
727-733
10.1615/TelecomRadEng.v68.i8.80
P. S.
Krasov
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine
E. A.
Arkhipova
A. Usikov Institute of Radio Physics and Electronics, National Academy of Sciences of Ukraine, 12, Academician Proskura St., Kharkiv 61085, Ukraine
The present work has been undertaken to description of device developed for measurement of the complex permittivity of biological objects in the free water dispersion region. The measuring of test substances both water and two ethanol/water mixtures have been performed. As an example feasible application of this instrument in biological and medical investigations the experimental data obtained in evaluation of human erythrocyte adrenergic activity test are represented.
On the Nature of Superweak Energy Interactions
735-746
10.1615/TelecomRadEng.v68.i8.90
V. G.
Kozlov
Center of Energy Information Systemic Studies "Zodiak", St. Petersburg, Russian Federation
The work discloses the physical meaning of the "information" notion in terms of the laws of energy and matter conservation. It is proved that any material system represents a specifically organized photon ensemble (constellation), whereas information interactions represent low-energy metabolic processes changing the state of the system. It is shown that the energy atomic spectrum does not include the full energy minimum; hence, there exists natural and regular transformation of atoms of chemical elements to elementary particles, and vice versa. In conditions of gravitational collapse, relativistic structures of elementary particles disappear from the electromagnetic field of vision (but not from gravitational field of vision). The potential energy of an elementary particle in conditions of gravitational collapse is adequate to the temperature of materialization of "Higgs massless fields" of the grand unified theory. In this connection, this work discloses the concept of the unified matter theory, alternative to the unified field theory.