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检索条件"任意字段=Conference on Systems of Signals Generating and Processing in the Field of on Board Communications"

共 537 条记录，以下是111-120 订阅

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Effective precoding and demodulation techniques for 5G communication systems

Effective precoding and demodulation techniques for 5G commu...

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

作者： Kreyndelin, Vitaly Smirnov, Alexey Ben Rejeb, Taoufik MTUCI Moscow Russia

ISBN: (纸本)9781538656235;9781538656228

Multiple-Input Multiple Output (MIMO) is the key technology in most advanced wireless communication standarts like 3GPP Long Term Evolution (LTE) and IEEE 802.11n/ac (Wi-Fi). MIMO provides the better performance in terms of data rates and spectral efficiency. The cost of MIMO improvements is increased computational complexity of the signal processing at both ends and, as a consequence, growing complexity of the hardware. Increasing number of antennas in MIMO systems will make MIMO systems difficult to implement.

关键词： Multiuser MIMO MU-MIMO Massive MIMO precoding grassmann manifold codebook iterative demodulation computational complexity

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About Cycle Stationary of APSK-N-signals Observed on the Output of Communication Channel with Intersymbol Interference

About Cycle Stationary of APSK-N-Signals Observed on the Out...

引用

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

作者： Fayzullin, R. R. Lerner, I. M. Kazan Natl Res Tech Univ Kazan Russia

ISBN: (纸本)9781728106069

An algorithm for determining the conditions under which the multi-position amplitude-phase manipulated signal at the output of the communication channel becomes a cyclostationary process is presented. The results of its use were used to estimate the resolution times and effective memory for various types of amplitude-frequency responses of the channel presented in this paper. New properties were revealed for channels with ISI

关键词： ISI channel with memory cyclo-stationary process SER

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Generation of pseudo-random signals based on a modified Lorenz system, realized over a Galois finite field

Generation of pseudo-random signals based on a modified Lore...

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

作者： Zuev, M. Yu Loginov, S. S. Kazan Natl Res Tech Univ Radioelect & Quantuum Devices Dept Kazan Russia

ISBN: (纸本)9781538656235;9781538656228

The new class of modified Lorenz system based pseudorandom numbers generator, realized in Galois field was considered. Modification is based on realization of Lorenz system in Galois field and making all operations of sum and multiplying in these fields. Perfection and depreciation of digital element base does actual realization of shapers of multilevel chaotic signals on the basis of algorithms of the numerical decision of systems of the differential equations describing systems with dynamic chaos. In article the analysis of statistical characteristics of a new class of pseudorandom numbers generator is carried out. Base statistical properties of modified Lorenz system based pseudorandom numbers generator, realized in Galois field were estimated. Correlation intervals of signals were estimated. Probability distributions of the generated numbers are considered.

关键词： pseudorandom numbers Lorenz system statistical properties

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The Rational Checks Amount Selection for the Information Management systems Troubleshooting

The Rational Checks Amount Selection for the Information Man...

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

作者： Goncharov, V. V. Goncharov, A., V Matyunina, D. D. Shishova, N. A. Moscow Tech Univ Commun & Informat Moscow Russia

ISBN: (纸本)9781728106069

The questions of creating a rational set of controlled parameters of the information management system in order to maintain it ready to perform tasks for functional purposes. The main attention is paid to the study of the range of changes in the parameter and its impact on the performance of individual devices and the system as a whole.

关键词： controllable parameter fault reliability Markov random process the access boundary probability density mathematical expectation dispersion

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A Narrow-Band Interference Compensation Device Based on a Digital Filter Bank for Broadband Low-Energy HF Radio Lines

A Narrow-Band Interference Compensation Device Based on a Di...

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

作者： Lobov, E. M. Shubin, D. N. Moscow Russia ? Moscow Russia

ISBN: (纸本)9781728106069

The article presents a device for narrowband interference compensation on the basis of a bank of digital filters for broadband low-energy HF radio links. An analytical comparison is made of the effectiveness of signal reception algorithms in the presence of narrowband interference. The algorithm of optimal reception with the normalization of the power spectral density and the algorithm of reception with the rejection of the part of the spectrum affected by interference are compared. An algorithm and a device based on a bank of digital filters are proposed, ensuring the normalization of the power spectral density in accordance with the optimal reception algorithm. The results of the simulation and field experiment on the processing of wideband signals in the presence of interference with the help of the developed program module for the normalization of the spectral power density are presented.

关键词： wideband signals HF radio ionosphere digital filter banks narrowband interference performance

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Application of Weber-Fechner Law in Image Transmission in the field of Onboard communications

Application of Weber-Fechner Law in Image Transmission in th...

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

作者： Kudryashova, A. Y. Adzhemov, A. S. Vlasuyk, I. V. Moscow Tech Univ Commun & Informat Moscow Russia

ISBN: (纸本)9781728106069

In the modern world, image transmission, including transmission of television and video signals, is carried out using a preliminary and restorative correction according to the law, which was due to the use of imaging devices on cathode ray tubes. This law differs from the law of dependence of the visibility threshold of a visual stimulus on its magnitude, but continues to be used for compatibility reasons. Therefore, in the work, instead of linearizing the sensations of the quantization scale of a television signal, it is proposed to optimize the choice of code combinations for image transmission. This approach can be effective in television systems without compression of video information with losses, for example, for transmitting signals over short distances or in channels for transmitting signals of the image of Earth remote sensing systems

关键词： Weber-Fechner law gamma correction transfer characteristic efficient coding risk matrix probability matrix

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Study and Analysis of Nonlinear Effects in Optical systems Using Spectral Technologies

Study and Analysis of Nonlinear Effects in Optical Systems U...

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

作者： Ibrahimov, B. G. Hasanov, M. H. Humbatov, S. H. Azerbaijan Tech Univ Baku Azerbaijan Police Acad Internal Affairs Republ Azerbaij Baku Azerbaijan

ISBN: (纸本)9781728106069

The influence of nonlinear effects in fiber-optic transmission lines in the dispersion control mode was studied, on the basis of which methods for calculating the performance indicators optical information transmission systems and algorithms for determining parameters single-mode optical fibers were proposed. Analytical expressions are obtained, allowing to evaluate the efficiency of the functioning optical signal transmission systems based on the technology spectral and dense spectral channel compression on the wavelength.

关键词： nonlinear effect phase-cross switching fiber-optic communication line wavelength attenuation bit rate

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Information Technology in The Mobile Application of Analysis and Correction of The Diet of Individual Healthy Nutrition

Information Technology in The Mobile Application of Analysis...

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

作者： Bruevich, N. A. Ivashkin, Yu A. Nikitina, M. A. Moscow Tech Univ Commun & Informat Moscow Russia Russian Acad Sci VM Gorbatov Fed Res Ctr Food Syst Moscow Russia

ISBN: (纸本)9781728106069

This article deals with the problem of developing and implementing a mobile software product for compiling a healthy human nutrition ration using IT technologies. An analysis of existing software applications in this area for desktops;developed functional requirements for a mobile computer system for healthy nutrition, formulated the conceptual foundations of information technology, formalized the general decision-making support algorithm in the preparation and optimization of a healthy diet.

关键词： healthy nutrition diet composition interchangeability compatibility it-technologies expert systems mobile applications

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Intelligent Vehicle Condition Monitoring System

Intelligent Vehicle Condition Monitoring System

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

作者： Chesnokov, A. S. Gorodnichev, M. G. Gavrish, K. A. Zhidkova, M. A. Moscow Tech Univ Commun & Informat Moscow Russia Moscow Automobile & Rd Construct State Tech Univ Moscow Russia

ISBN: (纸本)9781728106069

This research work is devoted to the design and development of the server part of the intelligent data collection system. The advantage of such a system is that there are no analogues on the Russian market, although it can be used today. Today, this topic is more than relevant due to the emergence of a larger number of cars on the roads of our country, an increase in the statistics of road traffic accidents for 2018 compared with 2017.

关键词： client-server transport trip recorder (black box) intelligent system car-following model onboard systems

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External electromagnetic fields influence upon moving objects

External electromagnetic fields influence upon moving object...

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

作者： Sokolov, Stanislav A. Zubilevich, Alexander L. Morozov, Boris N. Moscow Tech Univ Commun & Informat Moscow Russia

ISBN: (纸本)9781538656235;9781538656228

Number of moving objects (satellites, aircrafts, trains, vehicles and so on) rises continuously in the space at earth surface and nearby. This space is filled by radiation and electromagnetic fields of natural and artificial sources. The external electromagnetic fields have an influence upon communication equipment and instruments of moving objects, that can to pose severe hazard to them. The most troubles are brought by lightning discharges, that are source of current, fields, x- and gamma-emission. In this paper there are some aspects of possible impacts considering.

关键词： Electromagnetic field lightning moving object gamma emission polarization plane rotating

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