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Estimating Mutual Information for Link Adaptation in Generalized Spatial Modulation systems with Neural Networks 26

Estimating Mutual Information for Link Adaptation in General...

26th International ITG Workshop on Smart Antennas, WSA 2023 and 13th Conference on systems, Communications, and Coding, SCC 2023

作者： Bailon, Daniel Nicolas Kühn, Volker Shavgulidze, Sergo Freudenberger, Jürgen Institute for System Dynamics HTWG Konstanz University of Applied Sciences Germany Institute of Communications Engineering Faculty of Computer Science and Electrical Engineering University of Rostock Germany Faculty of Informatics and Control Systems Georgian Technical University Georgia Germany

ISBN: (纸本)9783800760510

Spatial modulation (SM) is a low-complexity multiple-input/multiple-output transmission technique that combines index modulation and quadrature amplitude modulation for wireless communications. In this work, we consider the problem of link adaption for generalized spatial modulation (GSM) systems that use multiple active transmit antennas simultaneously. Link adaption algorithms require a real-time estimation of the link quality of the time-variant communication channels, e.g., by means of estimating the mutual information. However, determining the mutual information of SM is challenging because no closed-form expressions have been found so far. Recently, multilayer feedforward neural networks were applied to compute the achievable rate of an index modulation link. However, only a small SM system with two transmit and two receive antennas was considered. In this work, we consider a similar approach but investigate larger GSM systems with multiple active antennas. We analyze the portions of mutual information related to antenna selection and the IQ modulation processes, which depend on the GSM variant and the signal constellation. © VDE VERLAG GMBH · Berlin · Offenbach.

关键词： Complex networks

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Time-Varying Gain Second Order Sliding Mode Differentiator

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IFAC Proceedings Volumes 2014年第3期47卷 1374-1379页

作者： Carlos Vazquez Stanislav Aranovskiy Leonid Freidovich Department of Applied Physics and Electronics Umeå University SE-901 87 Umeå Sweden Department of Control Systems and Informatics ITMO University Russia

The problem of first order differentiation, when an estimation of an upper bound of the second derivative is available on-line, is studied in this paper. The proposed method include two approaches: Second Order Sliding Mode and High-Gain algorithms, and consider the differentiator gain as a continuous time varying function. This scheme provides chattering attenuation, increasing at the same time the overall performance. Experimental results, realized over an Industrial Hydraulic System, confirm the efficiency of the methodology.

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An Application for Solving Truth Functions 9th

An Application for Solving Truth Functions

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9th Computer Science On-line Conference, CSOC 2020

作者： Pokorný, Pavel Ševčík, Daniel Department of Computer and Communication Systems Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stráněmi 4511 Zlín760 05 Czech Republic Department of Automation and Control Engineering Faculty of Applied Informatics Tomas Bata University in Zlín Nad Stráněmi 4511 Zlín760 05 Czech Republic

ISBN: (纸本)9783030519643

Nowadays, many technical devices are controlled by logic circuits. These circuits evaluate the situation based on the proposed truth functions, which they then use to perform one of the defined actions. In line with the increasing complexity of individual technical devices, the logic circuits and truth functions are also increasingly complex. For this reason, it makes sense to minimise these functions since they can thereby achieve a simpler technological process and the higher reliability of whole logic systems. This paper describes the Karnaugh Studio application, which resolves the minimisation of these truth functions - and was developed at our faculty (FAI, TBU in Zlín). The minimisation is performed using the Karnaugh Map Method - with support for up to eight variables on input. The application is based on the C++ programming language and the Dear ImGui and Magick++ libraries. Its functionality has been verified on a number of examples. This proved its applicability and ability to be used in the solution of logic circuits in industrial practice. © 2020, Springer Nature Switzerland AG.

关键词： Boolean functions

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Position control of an industrial hydraulic system with a pressure compensator

Position control of an industrial hydraulic system with a pr...

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Mediterranean Conference on control and Automation (MED)

作者： Stanislav Aranovskiy Andrei Losenkov Carlos Vázquez Department of Control Systems and Informatics ITMO University Saint-Petersburg Russia The Department of Control Systems and Informatics ITMO University Saint-Petersburg Russia Department of Applied Physics and Electronics Umea University Umea Sweden

ISBN: (纸本)9781479959020

A problem of position control of a forestry crane is studied. Several features of industrial hydraulic systems are pointed out, namely a nonlinearity of a valve and a pressure compensator. A novel model of a hydraulic system with the pressure compensator is presented and analyzed, a static nonlinearity inversion and a velocity feedforward control term are introduced. Real-time experiments with controllers which use only position measurements illustrate utility of these terms.

关键词： Valves Cranes Forestry Feedforward neural networks Position measurement Mathematical model

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Systematic analysis of the electric power and magnetic energy for linear electric and magnetic circuits with modifiable parameters

Systematic analysis of the electric power and magnetic energ...

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Eurocon

作者： Horia Andrei Fanica Spinei Ion Caciula Paul C. Andrei Control Systems and Computer Engineering Electrical Engineering Bucharest Polytechnic Institute Romania Radiating Systems Group Department of Applied Physics Faculty of Physics University of Bucharest Romania Romania Control Systems and Applied Informatics Valahia University of Targoviste Romania Department of Applied Informatics for Electrical Engineering Faculty of Electrical Engineering University of Bucharest Romania

The paper presents a new systematic analysis method in order to estimate the total absorbed power and energy in linear electric and magnetic circuits with modifiable parameters. The relation between the variation in one or all the resistances and reluctances of the networks and the variation of total absorbed power and energy are discussed using the Lagrange's method. For the considered applications the results are obtained with Mathematica and Maple useful for establishing the variation limits of absorbed power and energy.

关键词： Magnetic analysis Magnetic circuits Lagrangian functions Switching circuits H infinity control Stationary state Nonlinear systems

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Challenges of Social Machines

Challenges of Social Machines

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2014 4th International Conference on applied Social Science(ICASS 2014)

作者： Adriana Georgieva Bozhidar Georgiev Faculty of Applied Mathematics and Informatics Technical University of Sofia Faculty of Computer Systems and Control Technical University of Sofia

The main issue of this paper is social machine, analyzed as united system of computers and people. Here proposed analysis presents the social machines as a class of relationships between individual and social behavior on one hand, and between hardware and software systems on the other hand. The emergence of social machines can be expected to fundamentally change the way in which such properties and functions of the social systems are built. In this context, the concept about social machines appears as a contemporary model for unifying both computational and social processes. Providing social machines engineers with the appropriate modern tools to create corresponding system functions is a problem, which needs to be addressed to future scientists in this new area.

关键词： Social machine, Social intelligence, Crowdsourcing, Software engineering, Web languages, Agent-based semantic, Web Services.

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Preliminary results of deterministic chaos control through complexity measures

Preliminary results of deterministic chaos control through c...

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20th European Conference on Modelling and Simulation: Modelling Methodologies and Simulation Key Technologies in Academia and Industry, ECMS 2006

作者： Navratil, Eduard Zelinka, Ivan Senkerik, Roman Department of Applied Informatics Faculty of Applied Informatics Tomas Bata University Nad Stranemi 4511 Zlin 76005 Czech Republic Department of Information Flow in Complex Systems and their Control Tomas Bata University Nad Stranemi 4511 Zlin 76005 Czech Republic Department of Artificial Intelligence Theory of Information Tomas Bata University Nad Stranemi 4511 Zlin 762 72 Czech Republic

ISBN: (纸本)0955301807

This contribution deals with the application of complexity measures as alternative cost functions for the control of a spatiotemporal deterministic chaos represented by coupled map lattices. Mean mutual information and mean information gain is applied, along with a common 1-norm based cost function. Optimization is done through the self-organizing migrating algorithm. Aim of this study is to see whether the specific properties of the above measures can be exploited in spatiotemporal deterministic chaos control. © ECMS, 2006.

关键词： Chaos control

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Delay systems with Meromorphic Functions Design

Delay Systems with Meromorphic Functions Design

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IEEE International Conference on control and Automation

作者： Roman Prokop Jiri Korbel Libor Pekar Department of Mathematics Tomas Bata University in Zlin Faculty of Applied Informatics Department of Computer and Communication Systems Tomas Bata University in Zlin Faculty of Applied Informatics Department of Automation and Control Engineering Tomas Bata University in Zlin Faculty of Applied Informatics

ISBN: (纸本)9781509017393

The paper is focused on systems with delay terms at the left (and the right) side of differential equations. Analysis and synthesis of delay systems can be conveniently studied through a special ring of RQ-meromorphic functions. The control methodology is based on a solution of Diophantine equations in this ring. Final controllers result in the Smith predictor like structure. controller parameters are tuned through a pole-placement problem as a desired multiple root of the characteristic closed loop equation. The methodology is illustrated by a stable second order transfer function with a dead-time term. Then the paper brings an autotuning method as a combination of biased-relay feedback estimation and the proposed algebraic control design. The developed approach is illustrated by examples in the Matlab and Simulink environment.

关键词： Delay systems Rings Diophantine equation Autotuning Relay experiment

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Speed up of XML parsers with PHP language implementation

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AIP Conference Proceedings 2012年第1期1497卷 395-401页

作者： Bozhidar Georgiev Adriana Georgieva Fac. Computer Systems and Control Technical University of Sofia Sofia Bulgaria Fac. Applied Mathematics and Informatics Technical University of Sofia Sofia Bulgaria

In this paper, authors introduce PHP5's XML implementation and show how to read, parse, and write a short and uncomplicated XML file using Simple XML in a PHP environment. The possibilities for mutual work of PHP5 language and XML standard are described. The details of parsing process with Simple XML are also cleared. A practical project PHP-XML-MySQL presents the advantages of XML implementation in PHP modules. This approach allows comparatively simple search of XML hierarchical data by means of PHP software tools. The proposed project includes database, which can be extended with new data and new XML parsing functions.

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Objective evaluation of software architectures in driver assistance systems: Methods-quality model-metrics

Objective evaluation of software architectures in driver ass...

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作者： Ahrens, Dirk Frey, Andreas Pfeiffer, Andreas Bertram, Torsten BMW Group Driving Dynamics Driver Assistance and Active Safety 80788 Munich Germany Institute of Control Theory and Systems Engineering Technische Universität Dortmund 44221 Dortmund Germany Aerospace Informatics and Avionics Ingolstadt University of Applied Sciences 85019 Ingolstadt Germany

This paper describes methods and the obtained results for objective evaluation of software architectures in the automotive embedded domain. Software architecture is the key factor for influencing and fulfilling non-functional requirements that are addressed to a software system. Among others scalability, extensibility and portability are to be mentioned as major criteria. Until today however there is no approach that allows evaluating and measuring the quality of such software architectures objectively and quantitatively. The approach described here tries to close this gap and offers software architects methods and tools to be applied automatically to any existing architecture draft measuring an objective 'quality value'. Initially a quality model is developed which consists of several quality characteristics and quality attributes which are highly adapted and specialized to the specific needs of the automotive embedded software domain. After the identification of relevant quality attributes eight objective architecture metrics are developed and presented. The whole methodology is fully integrable into existing development processes. The suggested steps and artifacts can be added as optional upgrade. For a better understanding of the surrounding environment the current development process and necessary extensions are also explained. All metrics have been implemented in a fully functioning prototypical tool which can be operated via a graphical user interface (GUI) on any Java compliant system without further requirements. The user can freely configure which metrics shall be applied and how they are weighted to do an individual evaluation according to the software's specific needs or requirements. To prove its benefit for automotive applications and long-term establishment in the software development process the approach is evaluated. This is done in two consecutive steps. Firstly the general functioning and applicability is approved by using the metrics for several

关键词： Software architecture

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