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Journal articles on the topic 'Mobile communication systems – Mathematical models'

Author: Grafiati

Published: 4 June 2021

Last updated: 31 January 2023

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1

Nalapko, Oleksii, Oleg Sova, Andrii Shyshatskyi, et al. "Analysis of mathematical models of mobility of communication systems of special purpose radio communication systems." Technology audit and production reserves 4, no. 2(60) (2021): 39–44. http://dx.doi.org/10.15587/2706-5448.2021.237433.

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The object of research is the military radio communication system. One of the problems in improving the effectiveness of military radio communication systems is the correct description of the movement process in them. Efficient routing protocols are only possible if reliable information on network topology for network nodes is available. Thus, with this information, packets can be forwarded correctly between the sender and the recipient. Given that the mobility of individual nodes is insignificant in special wireless networks, nodes in the network show the mobility properties of a group of nod

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2

SHAHEEN, KAMEL M., and SOMESHWAR C. GUPTA. "PERFORMANCE RELIABILITY OF DS-CDMA MOBILE COMMUNICATION SYSTEM." International Journal of Reliability, Quality and Safety Engineering 03, no. 04 (1996): 305–24. http://dx.doi.org/10.1142/s021853939600020x.

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Applications of DS-CDMA in mobile communication systems, in forward link and reverse link, imply certain precautions against near–far effect (NFE), multi-access (co-channel) interference (MAI/CCI), and multipath fading. In this paper, two multi-user detection schemes are proposed to enhance the reliability of DS-CDMA system against NFE and MAI for both reverse link and forward link applications. The first scheme, reverse link multistage CCI cancellation (RLCCI) scheme, is derived for a single path channel model and is based on minimization of estimation error between the received signal and it

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Egorov, A., A. Lomakin, and D. Pantenkov. "Mathematical Models of Satellite Communication Systems with Unmanned Aerial Vehicles and Counter-Means of Radio Control. Part 1." Proceedings of Telecommunication Universities 5, no. 3 (2019): 19–26. http://dx.doi.org/10.31854/1813-324x-2019-5-3-19-26.

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Currently, satellite radio communication is the main type of radio communication related to the majority of special purpose mobile objects, including unmanned aerial vehicles (UAV) of heavy and super heavy classes of long flight duration, which are forced to move over long distances up to several thousand kilometers from the take of place (airport). In this point we face the problem of quality of the channel of the satellite radio communication line on its entire way between the transmitting and receiving devices, including providing the interference protection, stealth and secrecy of transmis

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Kozel, V. M., D. A. Podvornaya, and K. A. Kovalev. "Peal factor of signals of 5G mobile service systems." Doklady BGUIR 18, no. 6 (2020): 5–10. http://dx.doi.org/10.35596/1729-7648-2020-18-6-5-10.

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This article discusses the possible formats of signals of 5G mobile communication networks (NR, IMT-2020): configurations of the number of resource blocks and frequency shifts of subcarriers. modulation schemes, organizations of the physical level, as well as the broadband signals of these networks and, as a result, the need for introducing a margin on the linearity of the transceiver’s paths to eliminate distortion or the manifestation of blocking effects when the signal interferes with third-party means. We analyze the characteristics of the dynamic range of the signals from IMT-2020 ground

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Modlo, Yevhenii O., Serhiy O. Semerikov, Ruslan P. Shajda, et al. "Methods of using mobile Internet devices in the formation of the general professional component of bachelor in electromechanics competency in modeling of technical objects." CTE Workshop Proceedings 7 (March 20, 2020): 500–534. http://dx.doi.org/10.55056/cte.400.

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The article describes the components of methods of using mobile Internet devices in the formation of the general professional component of bachelor in electromechanics competency in modeling of technical objects: using various methods of representing models; solving professional problems using ICT; competence in electric machines and critical thinking. On the content of learning academic disciplines “Higher mathematics”, “Automatic control theory”, “Modeling of electromechanical systems”, “Electrical machines” features of use are disclosed for Scilab, SageCell, Google Sheets, Xcos on Cloud in

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Hunyadi, Daniel Ioan, Oana-Adriana Ticleanu, and Nicolae Constantinescu. "Optimal Elliptic-Curve Subspaces for Applications in Double-Authenticated Requests in Mobile Distributed Data Mining." Mathematics 11, no. 1 (2022): 122. http://dx.doi.org/10.3390/math11010122.

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Mathematical models based on elliptic curves have been intensively studied since their applicability in data security systems was discovered. In this article, the authors describe the optimal way to select particular subspaces over which elliptic curves are defined, showing the applicability of these subspaces in secure data transfer. Access to large databases and analyses of the requests made to these databases are required daily by a variety of users, including legal entities. An attack on these communication systems causes violations in privacy and damage to/theft of data that can be worth

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Khan, Burhan Ul Islam, Farhat Anwar, Farah Diyana Bt Abdul Rahman, et al. "SGM: Strategic Game Model for Resisting Node Misbehaviour in IoT-Cloud Ecosystem." Information 13, no. 11 (2022): 544. http://dx.doi.org/10.3390/info13110544.

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This paper introduces a computational strategic game model capable of mitigating the adversarial impact of node misbehaviour in large-scale Internet of Things (IoT) deployments. This security model’s central concept is to preclude the participation of misbehaving nodes during the routing process within the ad hoc environment of mobile IoT nodes. The core of the design is a simplified mathematical algorithm that can strategically compute payoff embrace moves to maximise gain. At the same time, a unique role is given to a node for restoring resources during communication or security operations.

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Maliuk, Victor, Oleksandr Iohov, Stanislav Horielyshev, et al. "Bounds Calculation Method of Electromagnetic Availability Zone of Radio Emission Source." Advances in Military Technology 17, no. 2 (2022): 341–56. http://dx.doi.org/10.3849/aimt.01739.

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The article deals with the problem of determining the electromagnetic availability zone of the radio transmitter of the radio communication channel in the UHF/VHF range on the terrain map of the area. This problem was solved using well-known mathematical models of radio signal propagation, depending on the characteristics of the specific area. Based on the wave algorithm, a bounds calculation method of electromagnetic availability zone is proposed, using a digitized radiation pattern of radio means. The conducted calculations show the effectiveness of the method in the tasks of assessing the p

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POLYAKOV, R. Yu. "APPLICATION OF PORTABLE FLYING ROBOTIC SYSTEMS FOR EARLY DETECTION OF AN IGNITION SOURCE." Periódico Tchê Química 17, no. 36 (2020): 1083–98. http://dx.doi.org/10.52571/ptq.v17.n36.2020.1098_periodico36_pgs_1083_1098.pdf.

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Recently, the development of modern equipment and early detection of ignition sources has become relevant due to many fires and the material and human damage caused by them. This study aimed to develop a method of searching for the ignition source by moving a mobile gas analyzer towards increasing the concentration of carbon monoxide (CO) emitted in the initial stages of fire. According to the simplex and Kiefer method, an algorithm based on the spatial detection method and guaranteed trajectory definition was used to move the mobile gas analyzer towards increasing concentration. The dependenc

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Knyazev, Volodymyr, Vladimir Kravchenko, Bogdan Lazurenko, Oleksandr Serkov, Karyna Trubchaninova, and Nataliia Panchenko. "Development of methods and models to improve the noise immunity of wireless communication channels." Eastern-European Journal of Enterprise Technologies 1, no. 5(115) (2022): 35–42. http://dx.doi.org/10.15587/1729-4061.2022.253458.

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It has been shown that existing methods and models for improving the noise immunity of communication channels are not capable of meeting requirements for the quality of information in mobile infocommunication systems. In addition, the compromised quality of information fails to protect it and provide the speed of information transmission and density of access channels. It has been proven that reducing the level of electromagnetic radiation is the main method of ensuring noise immunity in wireless mobile communication systems of infocommunication systems. Therefore, one way to ensure the stable

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Fokin, G. "Modeling multi-beam radio channel." Telecom IT 9, no. 1 (2021): 59–78. http://dx.doi.org/10.31854/2307-1303-2021-9-1-59-78.

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In this work, a simulation model of a radio channel with fading is implemented for use  in research of the multipath channel, as well as for assessing the noise immunity of transmission, recep-tion and processing systems in modern and future mobile communication and radio access networks. Formalization of mathematical models of a radio channel with fading, including the Rayleigh amplitude distribution, uniform phase distribution and a given Doppler spectrum, made it possible to visualize  the time-frequency and probabilistic characteristics of a radio channel with fading. The imple

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Piltyay, Stepan, Andrew Bulashenko, Hanna Kushnir, and Oleksandr Bulashenko. "Information Resources Economy in Satellite Systems based on New Microwave Polarizers with Tunable Posts." Path of Science 6, no. 11 (2020): 5001–10. http://dx.doi.org/10.22178/pos.64-6.

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One of the fundamental problems of modern digital telecommunications is the economy of digital information and frequency resources, which are highly limited. The introduction of novel telecommunication systems and 5G networks requires searching for principal solutions for the economy and reusing the frequency spectrum. Therefore, modern wireless mobile, terrestrial, and satellite systems use various new technologies to increase communication channels' information capacity for the economy of limited frequency resources. One of the most effective ways to reuse the information system's operating

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Alsulami, Osama Zwaid, Amal A. Alahmadi, Sarah O. M. Saeed, et al. "Optimum resource allocation in optical wireless systems with energy-efficient fog and cloud architectures." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 378, no. 2169 (2020): 20190188. http://dx.doi.org/10.1098/rsta.2019.0188.

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Optical wireless communication (OWC) is a promising technology that can provide high data rates while supporting multiple users. The optical wireless (OW) physical layer has been researched extensively, however, less work was devoted to multiple access and how the OW front end is connected to the network. In this paper, an OWC system which employs a wavelength division multiple access (WDMA) scheme is studied, for the purpose of supporting multiple users. In addition, a cloud/fog architecture is proposed for the first time for OWC to provide processing capabilities. The cloud/fog-integrated ar

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Madbouly, Magda M., Yasser F. Mokhtar, and Saad M. Darwish. "Quantum Game Application to Recovery Problem in Mobile Database." Symmetry 13, no. 11 (2021): 1984. http://dx.doi.org/10.3390/sym13111984.

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Mobile Computing (MC) is a relatively new concept in the world of distributed computing that is rapidly gaining traction. Due to the dynamic nature of mobility and the limited bandwidth available on wireless networks, this new computing environment for mobile devices presents significant challenges in terms of fault-tolerant system development. As a consequence, traditional fault-tolerance techniques are inherently inapplicable to these systems. External circumstances often expose mobile systems to failures in communication or data storage. In this article, a quantum game theory-based recovery

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Park, Jong Hyuk. "Advanced IT-Based Future Sustainable Computing (2017–2018)." Sustainability 11, no. 8 (2019): 2264. http://dx.doi.org/10.3390/su11082264.

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Future Sustainability Computing (FSC) is an emerging concept that holds various types of paradigms, rules, procedures, and policies to support breadth and length of the deployment of Information Technology (IT) for abundant life. However, advanced IT-based FCS is facing several sustainability problems in different information processing and computing environments. Solutions to these problems can call upon various computational and algorithmic frameworks that employ optimization, integration, generation, and utilization technique within cloud, mobile, and cluster computing, such as meta-heurist

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Budak, Gerçek, and Barış Özen. "Determining the Pricing Strategy and Pricing the Products of Mobile Games: Mathematical Model Approach." Wireless Communications and Mobile Computing 2022 (August 18, 2022): 1–10. http://dx.doi.org/10.1155/2022/1814759.

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In the technology era, new sectors, occupations, and products or services related to technology arise. Mobile gaming industry is one of those sectors with the technological developments of personal mobile devices. This sector is rapidly growing in terms of the number of companies, employees, games, and financial income; however, this situation increases the competition and companies in this sector survive as if they succeed a sustainable profit from the game by selling their products or services. These products can be grouped into four which are the game itself, cosmetic products, in-applicati

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Fokin, G. "MODELING OF THE PULSE SHAPING AND MATCHED FILTERS." Telecom IT 9, no. 2 (2021): 77–94. http://dx.doi.org/10.31854/2307-1303-2021-9-2-77-94.

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Pulse shaping filtering on transmission and matched filtering on reception are one of the main stages of digital signal processing that directly affect the noise immunity of their reception, therefore, the models, developed in this work, are of certain methodological interest, the relevance of which is confirmed by continuing in the last years trend of implementing procedures for transmitting, receiving and processing signals by means of model-based design and software-defined radio. The presented work contains scripts for the synthesis of the pulse shaping and matched filters with given chara

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Moiseenko, Valentin, Оleksandra Golovko, Volodymyr Butenko, and Karyna Trubchaninova. "Modeling of vehicle movement in computer information-control systems." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 1 (February 23, 2022): 36–49. http://dx.doi.org/10.32620/reks.2022.1.03.

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The subject of the article is the processes of synthesis of a mathematical model of control objects functioning in computer information-control systems of critical purpose for the needs of high-speed railway transport. The main emphasis is on modeling the movement of a passenger train in the high-speed system of Ukrzaliznytsia. The aim is to study the process of regulating the speed of railway vehicles under conditions of uncertainty in the primary information of microprocessor information-control systems of railway transport. Tasks: determination of the criterion of the safety of railway vehi

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Sitnikov, Ivan R., and Alexander V. Golikov. "Rationalization of the constructive form of towers with prestressed cables." Structural Mechanics of Engineering Constructions and Buildings 15, no. 3 (2019): 182–92. http://dx.doi.org/10.22363/1815-5235-2019-15-3-182-192.

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Relevance. One of the main directions of development of mobile communication systems, radio engineering and telecommunication systems is the improvement of the structural form of the bearing supports, which will solve a number of practical tasks: to increase the coverage area, to ensure higher rates of data transmission speed and to ensure stable operation in an increasing number of users. These circumstances justify the relevance of research in this direction. Aims of research. Optimization of design solutions using parallel puffs, ensuring the possibility of erection and safe operation durin

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20

Ali, Zain, Munam Ali Shah, Ahmad Almogren, Ikram Ud Din, Carsten Maple, and Hasan Ali Khattak. "Named Data Networking for Efficient IoT-based Disaster Management in a Smart Campus." Sustainability 12, no. 8 (2020): 3088. http://dx.doi.org/10.3390/su12083088.

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Disasters are uncertain occasions that can impose a drastic impact on human life and building infrastructures. Information and Communication Technology (ICT) plays a vital role in coping with such situations by enabling and integrating multiple technological resources to develop Disaster Management Systems (DMSs). In this context, a majority of the existing DMSs use networking architectures based upon the Internet Protocol (IP) focusing on location-dependent communications. However, IP-based communications face the limitations of inefficient bandwidth utilization, high processing, data securit

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Dampage, Udaya, S. M. R. P. Amarasooriya, R. A. S. M. Samarasinghe, and N. A. Karunasingha. "Combined Classifier-Demodulator Scheme Based on LSTM Architecture." Wireless Communications and Mobile Computing 2022 (June 15, 2022): 1–9. http://dx.doi.org/10.1155/2022/5584481.

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When it comes to studies on smart receiver designs, using machine learning and deep learning techniques for the development of automatic modulation classifiers as well as demodulators which require little to no information about the transmitted signal or the channel state is an area of interest. Through this study, we have proposed a combined classifier-demodulator system that is entirely deep learning-based and one that is focused on higher-order quadrature amplitude modulation (QAM) schemes such as 64QAM and 256QAM that can be used in next-generation mobile technologies. The system was devel

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Cheng, Ding-Yuan, Chi-Hua Chen, Chia-Hung Hsiang, Chi-Chun Lo, Hui-Fei Lin, and Bon-Yeh Lin. "The Optimal Sampling Period of a Fingerprint Positioning Algorithm for Vehicle Speed Estimation." Mathematical Problems in Engineering 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/306783.

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Using cellular floating vehicle data is a crucial technique for measuring and forecasting real-time traffic information based on anonymously sampling mobile phone positions for intelligent transportation systems (ITSs). However, a high sampling frequency generates a substantial load for ITS servers, and traffic information cannot be provided instantly when the sampling period is long. In this paper, two analytical models are proposed to analyze the optimal sampling period based on communication behaviors, traffic conditions, and two consecutive fingerprint positioning locations from the same c

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Grigoryev, Victor N. "Information technology in the investigation of riots." Vestnik of Saint Petersburg University. Law 12, no. 2 (2021): 334–55. http://dx.doi.org/10.21638/spbu14.2021.206.

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The use of information technology is a cross-cutting actively developing element in the method of investigating mass riots, which in modern conditions acts as a factor in the success of this work. The article reveals the features of the criminal prosecution of riots using information technology. The main areas of using automated data banks and information retrieval systems in the investigation of mass riots are determined. Domestic and foreign possibilities of using information technologies in the organization of investigative work, in accounting and control over the materials of criminal case

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Abdel Hameed, Mohamed, M. Hassaballah, Mosa E. Hosney, and Abdullah Alqahtani. "An AI-Enabled Internet of Things Based Autism Care System for Improving Cognitive Ability of Children with Autism Spectrum Disorders." Computational Intelligence and Neuroscience 2022 (May 23, 2022): 1–12. http://dx.doi.org/10.1155/2022/2247675.

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Smart monitoring and assisted living systems for cognitive health assessment play a central role in assessment of individuals’ health conditions. Autistic children suffer from some difficulties including social skills, repetitive behaviors, speech and nonverbal communication, and accommodating to the environment around them. Thus, dealing with autistic children is a serious public health problem as it is hard to determine what they feel with a lack of emotional cognitive ability. Currently, no medical treatments have been shown to cure autistic children, with most of the social assistive resea

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Pershin, V. A., and T. A. Khinikadze. "TECHNIQUE OF FUNCTIONAL UNIFICATION OF ADAPTIVE HYDRAULIC DRIVE MODULE CAPABLE OF LOAD STABILIZATION ON THE WORKING BODY OF MOBILE MACHINES." Vestnik of Don State Technical University 18, no. 3 (2018): 318–25. http://dx.doi.org/10.23947/1992-5980-2018-18-3-318-325.

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Introduction. Issues on the functional unification of the adaptive hydraulic drive module are studied. For the first time, self-adapting mechanisms are considered taking into account adaptive intercommunication of the load control and agreement of motions on the working body of the mobile machines. The work objective is to create and analyze the technique of the functional unification of the adaptive hydraulic drive module. In the furtherance of this goal, a number of tasks are solved. The selection of technical equipment – unified adaptive hydraulic drive modules of the mobile machines – is v

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Borowik, Grzegorz, Monika Kożdoń-Dębecka, and Sebastian Strzelecki. "Mutable Observation Used by Television Drone Pilots: Efficiency of Aerial Filming Regarding the Quality of Completed Shots." Electronics 11, no. 23 (2022): 3881. http://dx.doi.org/10.3390/electronics11233881.

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Drones, as mobile media of the present day, increase the operational and narrative capabilities of television and accelerate the logistics of shooting. Unmanned aerial vehicles with a camera properly steered by a pilot are able, to some extent, to replace a jimmy jib/crane and a dolly; basic technical devices, used in the studios, enabling the creation of narrative systems of pictures in film and television. Television is more and more often using drone footage to report events, broadcast live, as well as create coverage and television documentaries. In many productions, the pilot of the drone

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Sarkar, S., and K. N. Sivarajan. "Hypergraph models for cellular mobile communication systems." IEEE Transactions on Vehicular Technology 47, no. 2 (1998): 460–71. http://dx.doi.org/10.1109/25.669084.

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Rezghdeh, Keyvan, and Sajjad Shokouhyar. "A six-dimensional model for supply chain sustainability risk analysis in telecommunication networks: a case study." Modern Supply Chain Research and Applications 2, no. 4 (2020): 211–46. http://dx.doi.org/10.1108/mscra-09-2019-0018.

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PurposeThe main purpose of the present study was to improve and develop previously proposed models for Iran telecommunication networks. It should be noted that the six-dimensional (6D) sustainability model used in this study will be a useful and comprehensive model for industries. Since, the new dimension of IT along with the five well-known economic, social, environmental, technical and institutional aspects of organizations is considered to have great impacts on supply chain sustainability; the proposed framework can be practical.Design/methodology/approachAccording to the related literature

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29

Zhyla, Simeon, Valerii Volosyuk, Vladimir Pavlikov, et al. "Statistical synthesis of aerospace radars structure with optimal spatio-temporal signal processing, extended observation area and high spatial resolution." RADIOELECTRONIC AND COMPUTER SYSTEMS, no. 1 (February 23, 2022): 178–94. http://dx.doi.org/10.32620/reks.2022.1.14.

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Using the statistical theory of optimization of radio engineering systems the optimal method of coherent radar imaging of surfaces in airborne synthetic aperture radar with planar antenna arrays is developed. This method summarizes several modes of terrain observation and it is fully consistent with current trends in the development of cognitive radars with the possibilities of radiation pattern restructuring in space and adaptive reception of reflected signals. Possible modifications of the obtained optimal method for the operation of high-precision airborne radars with a wide swath are prese

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Monclou S., Alex A., Javier D. Mantilla F., Andrés Navarro Cadavid, and Rafael Camerano F. "Markovian Models in GSM900 Mobile Cellular Communication Systems." Sistemas y Telemática 1, no. 2 (2006): 37. http://dx.doi.org/10.18046/syt.v1i2.927.

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Yang, Qianqian. "Analysis of English Cultural Teaching Model Based on Machine Learning." Computational Intelligence and Neuroscience 2022 (May 14, 2022): 1–9. http://dx.doi.org/10.1155/2022/7126758.

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According to the world population, nearly five billion people use mobile phones in their daily lives, and this has increased by 20% in the last twelve months compared to the previous report. An average survey conducted by researchers to find the amount of data consumed in a month by every mobile phone in the world has finally resulted in 45 exabytes of data being collected from a single user within a month. In today’s world, data consumption and data analytics are being considered as one of the most important necessities for e-commerce companies. With the help of such collected data from a per

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Xiao, Zheng Rong, Li Yun Zhang, Jun Liao, and Bin Feng Yan. "Coexistence Studies between Mobile Communication Systems and Broadcasting Systems." Applied Mechanics and Materials 303-306 (February 2013): 2022–26. http://dx.doi.org/10.4028/www.scientific.net/amm.303-306.2022.

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With the rapid development of mobile internet, more and more frequency band will be needed to meet the requirement of high data speed. The system coexistence between mobile system and broadcast system is studied, including the scenarios, models, simulation results, related analysis, and finally the solution to resolve the coexistence is given. In urban, an additional 37dB isolation between broadcast system and mobile base station should been satisfied. And an additional 15.7dB is needed between mobile base station and broadcast receiver.

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Park, Suwon. "Mathematical Modeling of Link Adaptation Schemes Used in Mobile Communication Systems." International Journal of Energy, Information and Communications 8, no. 4 (2017): 27–46. http://dx.doi.org/10.21742/ijeic.2017.8.4.04.

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Jiang, Lei, and Soon Yim Tan. "Geometrically based power azimuth spectrum models for mobile communication systems." Microwave and Optical Technology Letters 49, no. 9 (2007): 2093–97. http://dx.doi.org/10.1002/mop.22686.

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Punt, J. B., D. Sparreboom, F. Brouwer, and R. Prasad. "Mathematical analysis of dynamic channel selection in indoor mobile wireless communication systems." IEEE Transactions on Vehicular Technology 47, no. 4 (1998): 1302–13. http://dx.doi.org/10.1109/25.728520.

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Talha, Batool, and Matthias Patzold. "Channel Models for Mobile-to-Mobile Cooperative Communication Systems: A State of the Art Review." IEEE Vehicular Technology Magazine 6, no. 2 (2011): 33–43. http://dx.doi.org/10.1109/mvt.2011.940793.

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Bakhshi, Gholamreza, Reza Saadat, and Kamal Shahtalebi. "Modeling and Simulation of MIMO Mobile-to-Mobile Wireless Fading Channels." International Journal of Antennas and Propagation 2012 (2012): 1–13. http://dx.doi.org/10.1155/2012/846153.

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Analysis and design of multielement antenna systems in mobile fading channels require a model for the space-time cross-correlation among the links of the underlying multipleinput multiple-output (MIMO) Mobile-to-Mobile (M-to-M) communication channels. In this paper, we propose the modified geometrical two-ring model, a MIMO channel reference model for M-to-M communication systems. This model is based on the extension of single-bounce two-ring scattering model for flat fading channel under the assumption that the transmitter and the receiver are moving. Assuming single-bounce scattering model i

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Devyatisilny, A. S., and A. V. Shurygin. "MATHEMATICAL MODELS OF TRAJECTORY PARAMETERS OF MOBILE OBJECTS FOR EMBEDDED GLONASS SYSTEMS." Informatika i sistemy upravleniya, no. 55 (2018): 42–50. http://dx.doi.org/10.22250/isu.2018.55.42-50.

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Ziyadinov, Vadim V., and Maxim V. Tereshonok. "MATHEMATICAL MODELS AND RECOGNITION METHODS FOR MOBILE SUBSCRIBERS MUTUAL PLACEMENT." T-Comm 15, no. 4 (2021): 49–56. http://dx.doi.org/10.36724/2072-8735-2021-15-4-49-56.

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The challenge of mobile subscribers’ groups and crowd’s behavior prediction during the mass events is now increasingly important. Operative methods application of this task solution is difficult; accordingly, development and application of technical methods is necessary. The method of this problem solution consists of subscribers’ telephone conversations recording in a zone of mass action, and the following speech recognition, the semantic analysis and statistical processing application. However, there is a tendency demand decrease for mobile systems voice services with simultaneous demand gro

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Wu, Xiaoxin, Huan Chen, Yaoda Liu, and Wenwu Zhu. "A Novel Energy Saving Approach through Mobile Collaborative Computing Systems." International Journal of Handheld Computing Research 1, no. 2 (2010): 1–16. http://dx.doi.org/10.4018/jhcr.2010040101.

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Energy saving has been studied widely in both of computing and communication research communities. For handheld devices, energy is becoming a more and more critical issue because lots of applications running on handhelds today are computation or communication intensive and take a long time to finish. Unlike previous work that proposes computing or communication energy solutions alone, this paper proposes a novel energy savings approach through mobile collaborative systems, which jointly consider computing and communication energy cost. In this work, the authors use streaming video as investiga

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Naydenov, Borislav Georgiev, Antim Hristov Yordanov, and Lyubomir Petrov Kamburov. "Mathematical model of parametrically controlled matched filters." ANNUAL JOURNAL OF TECHNICAL UNIVERSITY OF VARNA, BULGARIA 1, no. 1 (2017): 27–31. http://dx.doi.org/10.29114/ajtuv.vol1.iss1.60.

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A one model of parametrically controlled coherent filters is described and analyzed, applied also in radar systems and mobile communication systems to improve noise resistance. Application of the Nyquist-Shannon theorem in the frequency domain to obtain a set of frequency filters with variable parameters. The conversion of the signal at the output of the parameter filter using the auto correlation feature is shown when a normal white noise occurs.

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Pichugin, S. B. "Simplest Flow Queuing Models for LEO Satellite System." Proceedings of Higher Educational Institutions. Маchine Building, no. 1 (742) (January 2022): 61–70. http://dx.doi.org/10.18698/0536-1044-2022-1-61-70.

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The relevance of the work is associated with the active deployment of low-orbit communication systems and the expansion of research in the field of corresponding satellite systems. A promising low-orbit communication system based on relay satellites with the function (RSRFs) of routing message packets is considered. The low earth orbit communications systems use the BGP protocol and the AAA functionality at the ground station. For assessing the characteristics of RSRF inter-satellite paths, a scenario was created for the message packets arrival from a group of inter-satellite paths to one subs

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Osadcha, Kateryna P. "ТЬЮТОРСЬКИЙ СУПРОВІД НАВЧАННЯ МАТЕМАТИКИ ЗАСОБАМИ ІНФОРМАЦІЙНО-КОМУНІКАЦІЙНИХ ТЕХНОЛОГІЙ". Information Technologies and Learning Tools 61, № 5 (2017): 36. http://dx.doi.org/10.33407/itlt.v61i5.1693.

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The paper describes the tutor activity in the process of mathematics teaching support on the basis of the use of information and communication technologies (ICT). The author has analysed the available Internet resources and mobile applications in mathematics, which are classified according to their functional purposes into groups: systems of mass open courses, platforms for adaptive learning, video channels, mathematical online simulators, online tasks, mathematical games, mathematical portals, online platforms, mathematical sites, mathematical online platforms, mathematical services, mobile a

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Burgin, Mark. "Triadic Structures in Interpersonal Communication." Information 9, no. 11 (2018): 283. http://dx.doi.org/10.3390/info9110283.

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Communication, which is information exchange between systems, is one of the basic information processes. To better understand communication and develop more efficient communication tools, it is important to have adequate and concise, static and dynamic, structured models of communication. The principal goal of this paper is explication of the communication structures, formation of their adequate mathematical models and description of their dynamic interaction. Exploring communication in the context of structures and structural dynamics, we utilize the most fundamental structure in mathematics,

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Minaev, V. A., V. M. Pizengolts, A. O. Faddeev, A. Y. Bystryakov, E. V. Savenkova, and E. V. Kruglikova. "Modern information and mathematical models in construction industry." E3S Web of Conferences 116 (2019): 00051. http://dx.doi.org/10.1051/e3sconf/201911600051.

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Building information modelling (BIM) – new technology of construction object information maintenance. It allows specifying influence of changes and risks made in it (including geodynamic) at all stages of lifecycle. Objects include products, building equipment, technological platform, the building, engineering, transportation networks and systems of building communication. The model expands possibilities of innovative technologies implementation, allowing creating reasoned economic decisions.

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Lagerev, Alexander, and Igor Lagerev. "A general approach to the creation of digital twins of mobile ropeways based on mobile transport and reloading rope units." Nauchno-tekhnicheskiy vestnik Bryanskogo gosudarstvennogo universiteta 8, no. 1 (2022): 38–60. http://dx.doi.org/10.22281/2413-9920-2022-08-01-38-60.

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The article considers the conceptual approach and practical aspects of creating digital twins of mobile ropeways formed by two end mobile transport and reloading rope units based on self-propelled multi-axle wheeled chassis of high load capacity and cross-country ability. The approach is based on a systematic representation and analysis of the design and operating modes of a mobile ropeway. As a consequence, the digital twin is formed as a multilevel hierarchical structure. It combines information mathematical models of various functional purposes and varying degrees of mutual connectivity, wh

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Montoya, Germán A., and Yezid Donoso. "Delay-Sensitive Optimization Models and Distributed Routing Algorithms for Mobile Wireless Sensor Networks." International Journal of Computers Communications & Control 11, no. 6 (2016): 819. http://dx.doi.org/10.15837/ijccc.2016.6.2745.

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Communication disruptions caused by mobility in wireless sensor networks introduce undesired delays which affect the network performance in delay sensitive applications in MWSN. In order to study the negative effects caused by mobility, we propose two mathematical models to find the minimum cost path between a source node and a destination node considering the nodes position changes across time. Our mathematical models consider the usage of buffers in the nodes to represent the fact of storing a message if there is not an appropriate forwarding node for transmitting it. In order to contrast ou

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Ravignani, Andrea, and Koen de Reus. "Modelling Animal Interactive Rhythms in Communication." Evolutionary Bioinformatics 15 (January 2019): 117693431882355. http://dx.doi.org/10.1177/1176934318823558.

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Time is one crucial dimension conveying information in animal communication. Evolution has shaped animals’ nervous systems to produce signals with temporal properties fitting their socio-ecological niches. Many quantitative models of mechanisms underlying rhythmic behaviour exist, spanning insects, crustaceans, birds, amphibians, and mammals. However, these computational and mathematical models are often presented in isolation. Here, we provide an overview of the main mathematical models employed in the study of animal rhythmic communication among conspecifics. After presenting basic definitio

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Goncharov, Valerij I., Vadim A. Onufriev, and Ilya O. Ilyin. "Device for the Experimental Determination of Control Objects' Mathematical Models." Advanced Materials Research 650 (January 2013): 493–97. http://dx.doi.org/10.4028/www.scientific.net/amr.650.493.

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Authors review methods of determining a plant’s mathematical model. Then, they show a numerical method of pulse automatic control systems’ (ACS) identification, focused on computer technology, the interpolation procedure and iterative methods of approximation to the desired solution. The basis of the approach is the method of inverse problems of dynamics and real interpolation method for calculating the linearized dynamical systems. An algorithm and the mobile device designed for the identification of facilities management in operational conditions are proposed. There is results’ application i

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Gareh, Messaoud, Lotfi Djouane, Houcine Oudira, and Nazih Hamdiken. "Path Loss Models Optimization for Mobile Communication in Different Areas." Indonesian Journal of Electrical Engineering and Computer Science 3, no. 1 (2016): 126. http://dx.doi.org/10.11591/ijeecs.v3.i1.pp126-135.

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<p class="NormalItalique">In mobile radio systems, path loss models are necessary for proper planning, interference estimations, frequencies assignments and cell parameters which are basic for network planning process. Empirical models are the most adjustable models that can be suited to different types of environments. In this paper, data collected in Batna, Algeria is used to calculate the path loss for GSM (908-957 MHz). The measured path loss is compared with theoretical path loss estimated by the most widely empirical models «Cost123», «Hata», «SUI» and «Egli». The best model to est

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