Nowadays underwater optical cables have the total length of over 300,000 kilometers and they ensure communications between dozens of countries and continents divided by seas and oceans. Reliable operation of such cabl...
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ISBN:
(纸本)9781538656235;9781538656228
Nowadays underwater optical cables have the total length of over 300,000 kilometers and they ensure communications between dozens of countries and continents divided by seas and oceans. Reliable operation of such cables is the key objective in the course of designing of communications lines. This article deals with issues of redundancy in underwater optical cables.
This article reviews the problems of development of ground and on-board based information, controlling, and communication systems as a part of general controlling system;that is a complex of controling bodies, points ...
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ISBN:
(纸本)9781538656235;9781538656228
This article reviews the problems of development of ground and on-board based information, controlling, and communication systems as a part of general controlling system;that is a complex of controling bodies, points and tools, and respective organizational, technical and technological processes. The development of abovementioned systems is based on the process approach to their integration.
New On-boardsystems using Big Data volume. For Big Data transmission it is useful WDM technology. Upon transition to new generation telecommunication networks it is important to have management and supervision for al...
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ISBN:
(纸本)9781728106069
New On-boardsystems using Big Data volume. For Big Data transmission it is useful WDM technology. Upon transition to new generation telecommunication networks it is important to have management and supervision for all network levels. It is very important to know future monitoring system characters. In this article we use imitation modeling for WDM parameters monitoring and IP over WDM signal transferring.
The problem of breakdown effect, also called multiphactor, in on-board equipment of satellite communication systems is considered. This negative effect affects the reliability of onboard devices of high radiation powe...
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ISBN:
(纸本)9781728106069
The problem of breakdown effect, also called multiphactor, in on-board equipment of satellite communication systems is considered. This negative effect affects the reliability of onboard devices of high radiation power and hinders the development of radio-electronic equipment for space applications in general. The breakdown effect mechanism is carried out. We show the specifics of breakdown effect in strip and coaxial components of satellite electronic equipment and also discuss how to prevent a possible discharge in on-board equipment.
A method for solving time-consuming tasks on parallel computing systems based on a combination of heuristic algorithms is described. An algorithm of polynomial complexity has been proposed and investigated, which in r...
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ISBN:
(纸本)9781728106069
A method for solving time-consuming tasks on parallel computing systems based on a combination of heuristic algorithms is described. An algorithm of polynomial complexity has been proposed and investigated, which in real time determines a rational combination of heuristic algorithms for solving the problem and the order of assigning these algorithms to the elements of a parallel computing system.
Upon transition to new generation telecommunication networks it is important to have management and supervision for all network levels. Therefore the problem of monitoring of parameters of the FOTN base network with w...
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ISBN:
(纸本)9781538656235;9781538656228
Upon transition to new generation telecommunication networks it is important to have management and supervision for all network levels. Therefore the problem of monitoring of parameters of the FOTN base network with wavelength division multiplexing is of great importance. Bases of this mechanism which are used for creation of control systems of communication networks of new generation are given in article.
This paper presents the prototype of brain-computer interface (BCI), designed to control on-boardsystems. BCI functions of the basis of an artificial convolutional neural network that recognizes the patterns of activ...
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ISBN:
(纸本)9781538656235;9781538656228
This paper presents the prototype of brain-computer interface (BCI), designed to control on-boardsystems. BCI functions of the basis of an artificial convolutional neural network that recognizes the patterns of activity of the human brain. The device is characterized by a high-precision classifier of brain activity patterns, as well as high quality and stability of recording brain activity signals. The results of the recognition quality obtained during the experiment are presented.
the article considers techniques of forming the signals with a frequency-hopping spread spectrum. The advantages of systems with FHSS during electronic warfare systems jamming are shown. A new structure of the direct ...
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ISBN:
(纸本)9781538656235;9781538656228
the article considers techniques of forming the signals with a frequency-hopping spread spectrum. The advantages of systems with FHSS during electronic warfare systems jamming are shown. A new structure of the direct digital synthesizer of frequency-modulated signals that have the high frequency tuning rate is offered.
In modern wireline and optical communication systems, issues of assessing the quality of signal transmission are very relevant. To assess this, the article investigates the influence of coding methods on the quality o...
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ISBN:
(纸本)9781538656235;9781538656228
In modern wireline and optical communication systems, issues of assessing the quality of signal transmission are very relevant. To assess this, the article investigates the influence of coding methods on the quality of received signals, taking into account the features of signal transformations in various metric spaces, in particular, for analog-digital transformations. Analytical expressions are obtained showing the limits of achievable quality depending on the established risk indicators and the type of errors occurring in the digital signal.
This paper describes a blind two real signals separation method. Blind separation implies that there is no information about the signals except for received samples. This eliminates the presence of a systematic error ...
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ISBN:
(纸本)9781728106069
This paper describes a blind two real signals separation method. Blind separation implies that there is no information about the signals except for received samples. This eliminates the presence of a systematic error in determining the stirring matrix and the restoration of the original signals. As a criterion for the separation of signals in this paper, the cumulants of the second and third orders of the output signals were reduced to zero. To test the performance of the method, mixing and separation model was created, and the efficiency of the method was tested at various power levels of the intrinsic noise in the receiving channels.
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