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Jagerman Approximation of Erlang Processes in On-board Computing systems Models

Jagerman Approximation of Erlang Processes in On-Board Compu...

引用

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

作者： Andrei G. Erokhin Margarita F. Vanina Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

The design of on-board computer systems associates with a large number of calculations and the implementation of complex algorithms. Analytical and simulation models develop for this purpose. These models must take into account a significant number of factors, which include environmental influences, load fluctuations, and others. Queuing theory methods widely uses in modeling on-board computer systems. Queuing network models may be either open or closed. It becomes possible to take into account the network users operation technology when calculating the characteristics of this a model in the latter case. It is necessary to use special software or develop your own programs using algorithmic programming languages in any case. The processes taking place in on-board computer networks describes by the Erlang processes. Software implementation of it has been has quite complicated for a long time. In 1974 Jagerman develops a fast algorithm that implemented Erlang formula however. This paper provides examples of models and programs that allow you calculate the characteristics of on-board computer systems with a complex structure of user dialogue based on the Jagerman algorithm and Brown method for solution of nonlinear equations.

关键词： Analytical models Nonlinear equations Computational modeling Software algorithms Approximation algorithms Mathematical models Numerical models Queueing analysis Load modeling Information systems

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Modeling of Blockchain systems in Internet of Things Networks

Modeling of Blockchain Systems in Internet of Things Network...

引用

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

作者： Pavel Slyadnikov Natalia Toutova Andrei Erokhin Elena Frolova Margarita Vanina Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

Blockchain technologies, due to their properties of decentralization, data immutability and cryptographic security, offer a promising solution for IoT networks. However, storing data in a blockchain may not always meet real-time requirements. When designing IoT networks that use blockchain for data storage, it is necessary to evaluate the probabilistic and temporal characteristics of the blockchain, such as the time of block formation and transaction confirmation. The paper proposes a queuing model for a blockchain network with the Proof of Work consensus algorithm. It is modeled as a closed queuing network with a complex dialogue structure between participants. The model could be used to design a blockchain for IoT systems that accounts for network characteristics and blockchain operation parameters.

关键词： Analytical models Memory Probabilistic logic Proof of Work Real-time systems Data models Blockchains Internet of Things Queueing analysis Digital signatures

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Analysis of Software Necessary Possibilities and Development for Scientific Assessment Process Automation and Students Creative Potential as a Factor in Increasing the Educational Process Efficiency

Analysis of Software Necessary Possibilities and Development...

引用

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

作者： S. A. Smirnov A. V. Makarov E. V. Savchenko Volga-Vyatka Branch Moscow Technical University of Communications and Informatics Nizhniy Novgorod Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

The application of information technologies to the process of evaluating the scientific and creative potential of students opens up new prospects and wide opportunities to increase the effectiveness of the educational process. The use of the developed software allows not only to evaluate the scientific and creative potential, but also the leadership qualities of students, which in turn will allow teaching staff to increase students' interest in the academic discipline, as well as develop their abilities to successfully master other academic disciplines.

关键词： Leadership Automation Education Software quality Information technology

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Dolby Surround Sound Applications in DRM Digital Radio Broadcasting

Dolby Surround Sound Applications in DRM Digital Radio Broad...

引用

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

作者： O. V. Varlamov Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

The technical feasibility of using Dolby Stereo/Dolby Surround sound technologies to improve music programs perception in the Digital Radio Mondiale (DRM) digital radio broadcasting system in the low (LF), medium (MF) and high (HF) frequency ranges is considered. The technical feasibility of this proposal is shown in the “stereo” and “parametric stereo” modes when broadcasting in the 9/10 kHz frequency bandwidth in the transmission mode “A” with 64QAM modulation and protection levels “1”, “2” and “3” (in the LF and MF ranges), and in the transmission mode “B” with 64QAM modulation and protection levels “2” or “3” - in stable HF range channels with 10 kHz frequency bandwidth.

关键词： Frequency modulation Spatial audio Music Bandwidth Broadcasting Digital communication Encoding ITU Proposals Protection

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Methodological Support for the Development of Professional Competencies of Students and Graduates in Telecommunication Specialties in the field of Project Management

Methodological Support for the Development of Professional C...

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

作者： E. G. Kukharenko A. M. Kukharenko Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

The aim of the research is to improve the methodological support for the development of professional competencies in project management among students specializing in telecommunications and employees of telecommunication companies. The educational and methodological material has been prepared based on an analysis of the current state, dynamics, and trends in the development of telecommunications, a study of the features of ongoing telecommunication projects, and a comparative analysis of modern methodological approaches to project management and their application by telecommunication companies. The research resulted in a training and methodological complex for developing professional competencies of students and graduates specializing in telecommunications in the field of engineering and IT project management. The bank of cases, business games, and practical tasks developed by the authors ensures that students gain practical skills. The study is aimed at improving the quality of the educational process of training specialists for the telecommunications industry.

关键词： Training Industries Project management Companies Games Market research Telecommunications Faces Business

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Intelligent System for Diagnostics and Detection of External Vehicle Damages

Intelligent System for Diagnostics and Detection of External...

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

作者： Ksenia Polyantseva Sergei Gaponenko Andrei Sergeev Kamil Kharrasov Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

In this paper, an approach to detecting vehicle damage using deep learning and computer vision methods is presented. The aim of the study is to develop an automated system for identifying various types of external damage to vehicles, such as scratches, dents, and cracks, to enhance damage assessment speed and reduce costs. The YOLOv10 model is employed for damage detection, utilizing both the CarDD dataset and a custom dataset created from the vehicle fleet of a large ecommerce company, containing annotated images of vehicles with diverse defect types. The study includes a comparative analysis of different model configurations and the effectiveness of various neural network formats. The proposed system architecture integrates the trained model, providing reliable and efficient detection of external vehicle damage.

关键词： Deep learning YOLO Computer vision Computational modeling Neural networks systems architecture Lighting Reliability Intelligent systems Optimization

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Machine Learning Algorithms Based on Variations of the Least Squares Method for Power Amplifier Distortion Compensation

Machine Learning Algorithms Based on Variations of the Least...

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

作者： Igor V. Komarov Svetlana F. Gorgadze Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

Variants of indirect learning based on the Least Squares Method (LSM) and the Recursive Least Squares Method (RLSM) are considered for digital predistortion of nonlinear distortions in complex composite signals with high peak-toaverage power ratios in power amplifiers. The advantage of the recursive algorithm is identified, providing approximately 9 dB lower levels of spurious out-of-band emissions for the amplified complex signal compared to the simple least squares algorithm. It is shown that for the polynomial model of the power amplifier used in the study, the recursive algorithm requires approximately 700 times more elementary mathematical operations to achieve the most efficient compensation of signal nonlinearities than the least squares algorithm.

关键词： Machine learning algorithms Nonlinear distortion Computer architecture Approximation algorithms Predistortion Polynomials Mathematical models Hardware Least mean squares methods Convergence

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Investigation of Using Frank Sequences Sossibility in C-OChDM

Investigation of Using Frank Sequences Sossibility in C-OChD...

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

作者： Lev M. Kazadaev Konstantin Yu. Ryumshin Angela I. Sattarova Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

Currently, due to the rapid development of the Internet of Things, the growth in the number of devices requiring code division leads to a shortage of orthogonal code sequences to meet the needs of communication systems. This article proposes to use quantized Frank sequences for orthogonal code division of subscribers in the orthogonal code-chirp division multiplexing technology to expand the ensemble of code sequences for dividing devices. In the orthogonal code-chirp division multiplexing technology, the code sequences of subscribers divided by the ensemble are transmitted on a set of frequency subchannels with a linear-frequency carrier frequency. The comparative effect of quantized Frank sequences on the noise immunity of such a communication system is analyzed on the bit error rate dependencies.

关键词： Wireless communication Codes Stimulated emission Noise Frequency conversion Internet of Things Frequency division multiplexing Optical noise Optical devices Photonics

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Measurement of Video Camera Parameters for Video Recording of Fast Moving Objects

Measurement of Video Camera Parameters for Video Recording o...

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

作者： V. V. Kudryashov A. V. Balobanov Moscow Technical University of Communications and Informatics Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

In this article, we explored ways to measure video camera parameters that are important for shooting video of fastmoving objects. Fast-moving objects introduce additional distortions into the video recording if the video camera is not adapted to such an operating mode. Geometric distortions, blurs and incorrect brightness transfer are formed on the video recording. There are several ways to avoid or reduce the negative effects introduced during video shooting. The first is to use a technically more advanced video camera with improved quality properties. The second is to collect additional information during video shooting and use it to restore the original image. For both cases, it is necessary to know the actual parameters of the video camera. The method described in the article is based on the Rolling Shater and Wagon Wheel effects.

关键词： Visualization Video sequences Wheels Stars Visual systems Cameras Distortion Velocity measurement Video recording Rotation measurement

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On the Performance of Specialized Distributed Computing systems Using Multiple Parallel Task Queues

On the Performance of Specialized Distributed Computing Syst...

引用

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

作者： I. M. Gostev S. V. Bolovtsov Russian Scientific and Technical Society of Radio Engineering Electronics and Communications named after A.S. Popov Moscow Russia Russian Presidential Academy of National Economy and Public Administration (RANEPA) Moscow Russia

ISBN: (数字)9798331532635

ISBN: (纸本)9798331532642

Three variants of models of specialized distributed computing systems containing one, two and four parallel task queues are considered. Such systems are characterized by continuous non-stationary internal task flows. In these systems, the input tasks are parallelized into an a priori unknown number of data-independent subtasks. And when a certain subtask containing a solution is completed, all other branches of this task are deleted. The aim of the work was to study the behavior of such systems when they are organized with several parallel queues. The issues of changing the efficiency and performance of such systems with an increase in the number of queues are considered. Studies have shown that the use of several queues makes it possible to increase productivity without increasing computing resources.

关键词： Productivity Computational modeling System performance Planning Distributed computing

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