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Highly Selective Microstrip Filters Based on Multi-Step Comb Structures with Additional Cross-Coupling

Highly Selective Microstrip Filters Based on Multi-Step Comb...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Arinin, O.V. Aristarkhov, G.M. Ivichev, M.P. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781728147727

In this paper, we study the selective capabilities of highly selective three- and four-resonator microstrip filters based on multi-step comb structures with additional electromagnetic cross-coupling between non-adjacent resonators. The effect of impedance steps in different parts of the length of the resonators on the working attenuation poles formation and their location on the frequency axis is shown. The possibilities of various methods for controlling the degree of the splitting of the attenuation poles and their location relative to the passband are demonstrated. © 2020 IEEE.

关键词： Microstrip filters

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Integrated Control of Economic Security by Machine Learning in the Information Space of the Digital Economy

Integrated Control of Economic Security by Machine Learning ...

引用

systems of signals generating and processing in the field of on board communications

作者： E. A. Voronin S. V. Kozlov A. N. Kubankov Federal Research Center “Computer Science and Control” of Russian Academy of Sciences Moscow Russia Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781665415484;9781665446983

The paper considers a refined statement of the economic security control problem in the formation of a digital economy, developed on the basis of a probabilistic assessment of the implementation of organizational, technical and technological processes for ensuring economic security using a universal methodology. Methods and technologies for applying machine learning in control and ensuring of economic security, based on data from the information space of the digital economy, are given. A methodology and methods for assessing and predicting threats, assessing the vulnerability of economic systems and choosing the optimal strategy to counter them are proposed. Algorithms and the most suitable programming languages for the implementation of solutions to the problem are selected. It is possible only if there is an information space organized according to the paradigm of the digital economy.

关键词： Economics Machine learning algorithms Sensitivity Process control Optimal control Machine learning Aerospace electronics

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Review Methods for Calculating the Path Losses in a Closed Trans-Horizon Radio Link

Review Methods for Calculating the Path Losses in a Closed T...

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2020 systems of signals generating and processing in the field of on board communications

作者： Golovkin, I.V. Tolkachev, M.M. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781728147727

The article presents 2 methods for calculating the losses in the propagation of the radio signal of the tropospheric horizontal line. The key topic is the consideration and comparison of the described methods in Russian literature by scientists *** and *** and comparing them with the ITU international recommendation calculations. The presented calculations are valid for propagation paths of a radio signal with frequencies from 30 MHz and for distances up to 700 km. The article mentions the main signal transmission mechanisms used through the troposphere. © 2020 IEEE.

关键词： Troposphere

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Web Application Development for Biometric Identification System Based on Neural Network Face Recognition

Web Application Development for Biometric Identification Sys...

引用

2020 systems of signals generating and processing in the field of on board communications

作者： Bykov, A.D. Voronov, V.I. Voronova, L.I. Zharov, I.A. Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781728147727

The article describes the structural analysis of the developed biometric identification complex with a description of the architecture of the complex and its hardware and software components, design and development of web applications operators, as well as performance testing of important modules of the web application. Biometric identification complex under development can be applied in various spheres where access control to various important parts is required, for example in airports and its control zones. This work was supported by an internal MTUCI grant. © 2020 IEEE.

关键词： Access control

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Spectral Efficiency and Information Transfer Rate over Optical Fibers in Spatial Parallelism

Spectral Efficiency and Information Transfer Rate over Optic...

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2020 systems of signals generating and processing in the field of on board communications

作者： Korshunov, V.N. Ovchinnikova, I.A. Shavrin, S.S. Shishova, N.A. Tsym, A.Y. Moscow Technical University of Communications and Informatics Moscow Russia RRDI for Cable Industry Moscow Russia FSUI 'ZNIIS' Moscow Russia

ISBN: (纸本)9781728147727

Spatial parallelism contribution to optical fibers spectral efficiency and to signal transfer rate is being estimated. Parallelism multiplier system parameter is introduced. Using this parameter analytical expressions are constructed to determine the optical fibers spectral efficiency and information transfer rate. Examples of spatial parallelism of optical signal transmission in few-mode and multicore fibers are given. © 2020 IEEE.

关键词： Optical fibers

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Polarization Mode Dispersion Effects on Signal Quality and Compensation Methods

Polarization Mode Dispersion Effects on Signal Quality and C...

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2020 systems of signals generating and processing in the field of on board communications

作者： Vyukusenge, A. Rabenandrasana, J. University of Bujumbura Bujumbura Burundi Moscow Technical University of Communications and Informatics Moscow Russia University of Toliara Toliara Madagascar

ISBN: (纸本)9781728147727

With the ever-increasing bandwidth demand, high-speed optical systems are currently widely used to transmit various traffic over long distances. The main direction of development of optical communication systems is associated with the increase in the information transmission rate. However, the performance of long-haul high-speed optical systems is severely affected by linear and nonlinear transmission impairments, such as chromatic dispersion, polarization mode dispersion and nonlinear phase noise. In this paper the effects of the polarization mode dispersion on the system performance and its effects along with chromatic dispersion have been evaluated, and compensation methods have been proposed. © 2020 IEEE.

关键词： Chromatic dispersion

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Investigation of Corporate Networks with Moving Objects Using Combined Neural Networks

Investigation of Corporate Networks with Moving Objects Usin...

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systems of signals generating and processing in the field of on board communications

作者： I.O. Yuskov E. P. Stroganova Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (纸本)9781665415484;9781665446983

The development of algorithms for the neural network approach and the use of monitoring and management of corporate communication networks is considered as the creation and management of new types of services in networks, which is an urgent task for modern corporations. This, in turn, also influenced the elements of the modern world, which are in constant motion or do not have constant locations. To achieve that goal, it is necessary to create algorithms for actions to improve the efficiency of building and automating the processes of creating and improving mobile corporate networks. An important task is to provide examples of corporate networks with the presented domains, taking into account their fragments. Depending on the type of fragment and its purpose, their differences are shown. The proposed method makes it possible to increase the efficiency of optimization as a procedure for choosing the optimal technological conditions for the functioning of a corporate network, indicating the high quality of all its components.

关键词： Training Network slicing Neural networks Quality of service Production communications technology Planning

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Modeling the Algorithm of Cumulative Sums in the Applied Problems of Detecting the signals with Random Time of Occurrence in non-Gaussian Noise

Modeling the Algorithm of Cumulative Sums in the Applied Pro...

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systems of signals generating and processing in the field of on board communications

作者： V. M. Artyushenko V. I. Volovach Technological University Korolev Russia Volga Region State University of Service Togliatty Russia

The methods of mathematical modeling of the cumulative sums algorithm in the problems of detecting signals with a random moment of occurrence in non-Gaussian noise are considered. The probability of false alarm errors and correct detection of imbalance based on the statistical characteristics of the algorithm of cumulative sums obtained by modeling real processes is calculated. An experimental distribution of the cumulative sum in state of imbalance at a current step for detection without reflecting or absorbing screens is obtained. A linear dependence between the means of the cumulative sum taken in separate sections is determined. Based on modeling real processes, the probability of correct detection and false alarm under the influence of non-Gaussian noise with a bimodal distribution is calculated. Effectiveness of cumulative sums algorithm both consistent and inconsistent with the density of the probability distribution of influencing noise is compared.

关键词： Probability distribution Random processes Mathematical model Signal detection

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Laser Controlled Loop Antenna

Laser Controlled Loop Antenna

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systems of signals generating and processing in the field of on board communications

作者： S. Yu. Kazantsev A. S. Brusentsev P. A. Titovets A. I. Sattarova Moscow Polytechnic University Moscow Technical University of Communications and Informatics Moscow Russia Moscow Technical University of Communications and Informatics Moscow Russia

A new type of antenna system has been proposed - a configurable loop antenna with laser control. It is shown that the addition of semiconductor elements of the photoresistor type to the elements of the outer contour of the loop antenna makes it possible to significantly expand the functionality of the loop antenna and control the antenna characteristics using an external laser source. The paper presents the results of studies of characteristics of the transmission coefficient S11 of loop antennas composed of metal and semiconductor elements. It has been found that when a semiconductor element (photoresistor) is exposed to laser radiation, it is possible to effectively control the wave impedance of the antenna. In the range 0.3-800 MHz, the dependences of the voltage standing wave ratio (VSWR) and impedance on the radiation power of the laser module are obtained.

关键词： Stimulated emission Transmitting antennas Power lasers Receiving antennas Reflection coefficient Plasmas Impedance

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Combined Precoding Tehcnique with Antenna Selection for Massive MU-MIMO systems

Combined Precoding Tehcnique with Antenna Selection for Mass...

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systems of signals generating and processing in the field of on board communications

作者： M. G. Bakulin Taoufik Ben Rejeb V. B. Kreyndelin A. E. Smirnov Moscow Technical University of Communications and Informatics Moscow Russia

Frequency plan of the new standard of mobile communication systems 5G New Radio contain a large number of time division duplex bands. At the same time number of antennas in MIMO systems increases at the both sides on base station and on user equipment. The main goal of new technologies applying is to achieve high throughput according new enhanced mobile broadband scenarios: eMBB, uRLLC, mMTC. There are a lot of different methods for spatially signals processing, including precoding, beamforming, space-time codes, antenna selection. We proposed combined precoding technique with antenna selection, based on channel reciprocity principle, implemented in frequency bands with TDD mode. Proposed precoding technique with antenna selection can significantly increase the energy efficiency of multi-antenna systems with antenna configurations of the considered type, where user equipment has a large number of antennas. In addition, the proposed precoding algorithm has a low computational complexity and does not require the high efficiency feedback channel.

关键词： Time-frequency analysis Space-time codes Precoding Ultra reliable low latency communication Throughput New Radio Energy efficiency

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