ISSN 1991-2927
 

ACP № 1 (55) 2019

'Automation of Control Processes' # 3 (41) 2015

Contents
AUTOMATED CONTROL SYSTEMS

Andrei Feliksovich Zalmarson, Scientist at Research Centre of Strategic-Tactical Justification Scientific Associate of the Research Institute of the Navy Development and Strategic Issues of Military Educational-and-Research Centre "Naval Academy", graduated from the Faculty of Radiocommunication of Higher Naval Academy of Radioelectronics named after A. S. Popov, Higher Officer School, Naval Academy named after N. G. Kuznetcov; Candidate of Military Sciences, Senior Staff Scientist at Research Centre of Strategic-Tactical Justification Scientific Associate of the Research Institute of the Navy Development and Strategic Issues of Military Educational-and-Research Centre "Naval Academy"; specializes in justification of creation and development of military-oriented automated systems; an author of articles and papers in the subject area. [e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ]A. Zalmarson,

Artur Zhanovich Yudin, Scientific Associate of the Research Institute of the Navy Development and Strategic Issues of Military Educational-and-Research Centre "Naval Academy", graduated from the Faculty of C2 systems of Higher Naval Academy of Radioelectronics named after A. S. Popov, Naval Academy named after N. G Kuznetcov. Head of Scientific Associate of the Research Institute of the Navy Development and Strategic Issues of Military Educational-and-Research Centre "Naval Academy"; specializes in justification of creation and development of automated nautical systems and automation of command and control tactical level; an author of articles and papers in the subject area. [e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ]A. Yudin

A Comprehensive Approach to the Assessment of the Effectiveness of Software-hardware Complex of the Naval Authorities Functional Activity Automation 000_1.pdf

The Management Centre of the Main Headquarters of the Russian Navy, opened in St. Petersburg, allows continuous monitoring of the situation in the World Ocean. It is a new essential element of the National Centre for Defense Management of the Russian Federation. The Centre consists of the five departments; the Combat Control Department and Constant Activity Management Department are the main ones; they will be monitoring and analyzing the situation. The equipment of the Centre (the software-hardware complex) allows to perform complex calculations and simulations within the shortest possible time. It also allows the Main HQ of the Russian Federation Navy to ensure management effectively in a qualitative manner. The article discusses the approach to assessment of the effectiveness of the hardware-software complex of naval authorities functional activity automation at all stages of the life cycle. The approach also allows researching the influence of the complex functioning quality on the engagement efficiency and the solution of various control tasks of the Navy.

Automation, criteria, properties, system, software-hardware complex, indicator, efficiency.

Aleksandr Kupriianovich Ivanov, Federal Research-and-Production Center Joint Stock Company ‘Research and Production Association ‘Mars’, Doctor of Engineering, Honored Worker of Science and Engineering of the Ulyanovsk Region; graduated from the Faculty of Physics at Irkutsk State University; completed his post-graduate studies at Bauman Moscow Higher Technical School and his doctoral studies at Ulyanovsk State Technical University; Chief Staff Scientist at Federal Research-and-Production Center Joint Stock Company ‘Research and Production Association ‘Mars’; an author of monographs, articles, and a textbook in the field of mathematical modeling of hierarchical real-time computer-aided control systems. [e-mail: mars@mv.ru]A. Ivanov,

Evgenii Serafimovich Kukin, Federal Research-and-Production Center Joint Stock Company ‘Research and Production Association ‘Mars’, Candidate of Engineering; Associate Professor; graduated from the Faculty of Physics of Voronezh State University; Deputy Chief Designer, Head of the Department at FRPC JSC ‘RPA ‘Mars’; an author of articles in the field of the development of software for computer-aided systems. [e-mail: mars@mv.ru]E. Kukin,

Ilya Vasilyevich Chernyshev, Ulyanovsk State Technical University, Candidate of Engineering; graduated from Novosibirsk Electrotechnical Institute of Communications and Ulyanovsk State Technical University (UlSTU); finished his post-graduate studies at the Marshal Budyonny Military Academy of Communications; Associate Professor at the Department of Economics and Management of the Faculty of Economics and Mathematics at Ulyanovsk State Technical University; an author of textbooks and articles in the field of computer-aided control systems design and modeling. [e-mail: chernyshev@ulstu.ru]I. Chernyshev

Optimal Planning of Control Object Application 000_2.pdf

The issue of control objects distribution through environment objects taking into account controlled parameters optimization is considered in the article. In order to find the general solution of the problem, the authors plot the mathematical dependence between the criteria for the distribution and the probability of goal attainment under some influences, control objects dependent on controlled parameters, and environment objects’ condition. Mathematical dependence can be found by approximating experimental data got with the use of random-search algorithm. In order to rearrange initial dependencies in simple approximating forms, iterative orthogonal representation was used. The possibility of optimal solution search with the use of distribution algorithm without plotting the mathematical dependence was researched. That is occasioned by increasing performance of hierarchical automated control system computer aids. The use of this algorithm instead of approximate mathematical dependencies allows improving the solution accuracy. Moreover, the authors define the problem dimension that makes impossible to solve it using the algorithm for the control in real time. This dimension demands to use mathematical dependencies.

Optimal planning, control systems, scheduling algorithm, analytical dependencies.

Aleksandr Kupriianovich Ivanov, Federal Research-and-Production Center Joint Stock Company ‘Research and Production Association ‘Mars’, Doctor of Engineering, Honoured Worker of Science and Engineering of the Ulyanovsk Region; graduated from the Faculty of Physics at Irkutsk State University; completed his post-graduate studies at Bauman Moscow Higher Technical School and his doctoral studies at Ulyanovsk State Technical University; Chief Staff Scientist at Federal Research-and-Production Center Joint Stock Company ‘Research and Production Association ‘Mars’; an author of monographs, articles, and a textbook in the field of mathematical modeling of hierarchical real-time computer-aided control systems. [e-mail: mars@mv.ru]A. Ivanov

Optimization of Hierarchical Control System Stability 000_3.pdf

Designing of hierarchical control systems with optimal stability indices in condition of price limitation is considered in the article. The formal description of hierarchical system structure and functioning algorithm was made. The choice of optimal solution comes to the operational research on the basis of analytic dependencies between system stability indices and objects stability ones. In order to plot the analytic dependence, the authors propose to approximate the experimental data got in simulation process. The simulation model was made with the use of Monte-Carlo method. The paper proposes approximate formula models including orthogonal transformation reducing given dependencies to simple approximate forms. The possibility of direct application of scarce resources distribution search with the increasing performance of computer aids for the purpose of optimizing stability indices of the system is demonstrated. On the base of simulation, optimizing software has been developed. Also the article presents the calculation results that prove reasonability of direct application of simulation models in systems of special class.

Stability, hierarchical computer-aided control systems, optimal design, simulation.

INFORMATION SYSTEMS

Anatolii Afanasievich Gladkikh, Ulyanovsk State Technical University, Candidate of Engineering; graduated from S.M. Budyonny Military Communication Academy, finished his post-graduate studies of the same Academy; Professor at the Department of Telecommunications of Ulyanovsk State Technical University; an author of a monograph, text-books, research papers and patents in the field of noiseless coding and information security. [e-mail: a.gladkikh@ulstu.ru]A. Gladkikh,

Roman Vladimirovich Klimov, Ulyanovsk State Technical University, Post-Graduate Student at Ulyanovsk State Technical University; graduated from Ulyanovsk State Technical University; a state forensic expert, an author of articles and a patent holder in the field of noiseless coding. [e-mail: klimov_exp@mail.ru]R. Klimov,

Ivan Aleksandrovich Sorokin, Nizhny Novgorod State Institute of Engineering and Economics, Candidate of Engineering; graduated from Nizhny Novgorod State Institute of Engineering and Economics, Associate Professor at the Department of Information and Communication Technologies and Communication Systems of Nizhny Novgorod State University of Engineering and Economics; an author of articles in the field of information communications. [e-mail: ivansorokin@bk.ru]I. Sorokin

Methods of Reducing Intranetwork Load in Distributed Storage Data Systems 000_4.pdf

The constant growth in the volumes of generated and processed information and the transition from classical ways of representing and processing data to the concept of Big data is linked with the need for long-term storage of large and very large volumes of information. In modern distributed data storage systems it is a widely accepted approach for data replication, which has a number of advantages. However, the use of this approach requires a large number of repositories, the total memory of which must be proportionally greater than amounts of data stored. This paper examines alternative approaches to data warehousing based on the use of error-correcting codes that allow reducing the costs of the equipment while maintaining a comparable level of reliability. The article discusses the concept of constructing locally decodable codes that allow reconstructing of system individual nodes, involving a limited number of remaining nodes which reduces the load on the data network. It is also presented the apparatus of regenerative codes, which allow to reduce the load on the network, so that the redundancy of system is approaching MDS-codes.

Distributed storage data system, regenerative coding, locally decoded codes.

Vasilii Grigorevich Litvin, JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”, Doctor of Engineering, Professor, Chief Staff Scientist at JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”; graduated from Taganrog Radiotechnical Institute; finished his post-graduate studies at the Institute of Control Sciences of Russian Academy of Science; an author of 117 scientific papers in the field of computing systems performance evaluation. [e-mail: litvg@mail.ru]V. Litvin,

Aleksandr Anatolevich Musatov, JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”, Head of the Scientific-and-Technical Centre of JSC “Research Institute for Automatic Apparatus named after Academician V.S. Semenikhin”; graduated from Moscow Aviation Institute; an author of articles in the field of designing information computation systems. [e-mail: a_musatov@mail.ru]A. Musatov,

Iurii Vasilevich Litvin, Department of LCC NIIGAZECONOMICA at JSC “Gazprom”, Candidate of Economics; Head of the Department of LCC NIIGAZECONOMICA at JSC “Gazprom”; graduated from Moscow Engineering and Physics Institute; an author of 31 scientific papers in the field of risk assessment of organizational and technical systems. [e-mail: litvinj@simplecs.ru]I. Litvin

Defining Requirements for the Time of Query Execution By Real-time System Components With the Use of Bootstrap Methods 000_5.pdf

A new approach to definition of requirements for the time of query execution by real-time system at initial design stages is offered. The current system refers to the class of real-time systems with soft requirements for the response time. The initial prerequisite for the assessment of query execution time are the customer’s requirements for the system response time and the expert analysis data. The requirements for the time of query execution by the separate components are determined as mean values with the use of the bootstrap method. The developed approach application is illustrated by the simple numerical example.

Requirements management, real-time systems, expert methods, simulation, bootstrap method.

MATHEMATICAL MODELING

Nadezhda Glebovna Yarushkina, Ulyanovsk State Technical University, Doctor of Engineering, Professor, First Vice-Rector - Vice-Rector for Science of Ulyanovsk State Technical University (UlSTU); graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; an author of more than 250 papers in the field of soft computing, fuzzy logic, and hybrid systems. [e-mail: jng@ulstu.ru]N. Yarushkina,

Valeriia Vadimovna Voronina, Ulyanovsk State Technical University, Candidate of Engineering; graduated from the Faculty of Information Systems and Technologies at Ulyanovsk State Technical University; Associate Professor at the Department of Information Systems at Ulyanovsk State Technical University; an author of articles in the field of intellectual analysis of time series. [e-mail: vvsh85@mail.ru]V. Voronina,

Irina Aleksandrovna Timina, Ulyanovsk State Technical University, Assistant at the Department of Information Systems at Ulyanovsk State Technical University; graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University with a specialty of Applied Informatics (in Economics); an author of articles in the field of intellectual analysis of time series. [e-mail: timina_i@mail.ru@ulstu.ru]I. Timina,

Evgenii Nikolaevich Egov, Ulyanovsk State Technical University, Assistant at the Department of Information Systems at Ulyanovsk State Technical University; graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University; an author of articles in the field of intellectual analysis of time series. [e-mail: e.egov@ulstu.ru]E. Egov

Forecasting Technical System State With the Application of Entropy Measure for Fuzzy Time Series Diagnosis 000_6.pdf

This article discusses the ways to forecast time series of technical systems on the basis of the hypothesis of trends conservation, the hypothesis of trends stability and the hypothesis of forecasting for a specified period as well as forecasting with the use of the measure of entropy for fuzzy time series. The method of calculating the measure of entropy for fuzzy time series has been described in the previous issue of the journal. The software system of diagnosing and forecasting fuzzy time series based on the measure of entropy is also considered in the article. The system is divided into several modules, with the opportunity to use some of them in the other systems of time series prediction. The main interest of this paper is the prediction algorithm that was designed on the basis of time series measure of entropy and the comparison of the two approaches to forecasting fuzzy time series. The comparison was made on the basis of the values of MAPE, MSE, RMSE errors obtained from values of 10 rows predicted by two programs. The first program is based on the selection of one of the hypotheses, the second one described in this article is based on the prediction with the use of measure of entropy. This article is intended for professionals diagnosing technical systems.

Measure of entropy, prediction, time series.

Venera Arifzianovna Alekseeva, Ulyanovsk State Technical University, Candidate of Engineering; graduated from the Faculty of Economics and Mathematics of Ulyanovsk State Technical University; Associate Professor at the Department of Applied Mathematics and Informatics at UlSTU; an author of scientific papers in the field of statistical methods. [e-mail: v.a.alekseeva@bk.ru]V. Alekseeva

The Use of Machine Learning Methods for Binary Classification 000_7.pdf

The article deals with the problem of objects binary classification. To solve this problem, the use of machine learning methods should be provided. Machine learning is a subsection of artificial intelligence. It is a mathematical discipline using subsections of mathematical statistics, numerical optimization methods, probability theory, and discrete analysis. The goal of machine learning is a partial or complete automation of solutions of complex professional tasks in different fields of human activity such as speech recognition, image recognition, medical diagnostics, diagnostics of technical facilities etc. The use of the following methods for binary classification: decision trees, neural networks, nearest-neighbor method, discriminant analysis, Bayesian classifier, a support vector machine, logistic regression, decision trees begging, method of the empirical function and fuzzy inference based on the basis of Sugeno model are proposed. Classification efficiency is assessed with the use of a number of characteristics: mean-square error, ROC-curve, AUC index, etc. In order to improve the accuracy of classes objects prediction, a comparative analysis of the effectiveness of these methods at various cut-offs and a combination of models (so-called aggregate classifier) are offered.

Binary classification, machine learning, aggregate classifier, cut-off.

Viktor Rostislavovich Krasheninnikov, Ulyanovsk State Technical University, Doctor of Engineering, Professor; graduated from Kazan State University; Head of the Department of Applied Mathematics and Informatics at Ulyanovsk State Technical University; an author of articles in the field of statistical methods for signal and image processing. [e-mail: kvrulstu@mail.ru]V. Krasheninnikov

Pseudophysical Approach to Allignment and Recognition of Group Point Objects 000_8.pdf

The paper examines group point objects (GPO), i.e. two- or three-dimensional binary images composed of points, e.g. constellations, the specific body points, marks on the surface of the Earth or sea. The problem of alignment and recognition of such objects arises in navigation, robotics, diagnostics using medical images, etc. In this article, in order to align and recognize GPO, the authors propose to represent them as systems of material points. The author proposes to represent the group point objects as a system of material poits for alining and recognizing these objects. In this view, it is also possible to approximate GPO using such mechanical properties as gravity centers and inertia moments. The accuracy of GPO overlapping depends on how close their forms are. It helps to recognize the objects as recognized GPO refers to the closest model.

Group point object, binary image, alignment, recognition, gravitation, gravity center, inertia moment.

Aleksandr Sergeevich Andreev, Ulyanovsk State University, [e-mail: AndreevAS@ulsu.ru]A. Andreev,

Stanislav Iurievich Rakov, Ulyanovsk State University, graduated from the Faculty of Mathematics and Information Technologies of Ulyanovsk State University; Junior Researcher of Scientific Research Center of Ulyanovsk State University; an author of articles in the field of the motion control of mechanical systems. [e-mail: rakov.stanislav@gmail.com]S. Rakov

On Control of Two-link Robotic Manipulator on the Base of Pi-controller 000_9.pdf

The article deals with the problem of of two-link robotic manipulator program motions stabilization on a movable base by creating a PI-controller. The manipulator consists of two homogeneous links connected by a joint. A moving load is placed in the second link gripper. A movable base makes a translational motion in the horizontal plane. The links of the manipulator are also moving in the horizontal plane. Thus, the manipulator performs planar motion. The manipulator motions are described by the system of Lagrange equations of the second kind. The paper presents a control law carrying out stabilization of the given program motion as a proportional-integral dependence on condition that the base of the manipulator performs predetermined unsteady motion. The problem of program motion stabilization has been solved for the linearized model. For the numerical simulation a new program that allows providing PI-control for the various mechanical systems was used. A numerical solution of the resulting system of integral-differential equations is found. A numerical solution of the received system of integral-differential equations with abnormal indices is found. The corresponding graphs for the coordinates of the manipulator links proving the theoretical results are built.

Two-link manipulator, stabilization, program motion, pi-control, movable base.

COMPUTER-AIDED ENGINEERING

Nadezhda Glebovna Yarushkina, Ulyanovsk State Technical University, Doctor of Engineering, Professor, First Vice-Rector - Vice-Rector for Science of Ulyanovsk State Technical University; graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University ; an author of more than 250 papers in the field of soft computing, fuzzy logic, and hybrid systems. [e-mail: jng@ulstu.ru]N. Yarushkina,

Irina Aleksandrovna Timina, Ulyanovsk State Technical University, Assistant at the Department of Information Systems at Ulyanovsk State Technical University; graduated from the Faculty of Information Systems and Technologies of UlSTU with a specialty of Applied Informatics (in Economics); an author of articles in the field of data mining. [e-mail: timina_i@mail.ru@ulstu.ru]I. Timina

Automated System Model and Control Tools on the Base of Program Code Metrics History 000_10.pdf

The article discusses the issue of project management associated with the development of software products through using automated version control system (VCS) and the analysis of program code metrics. This problem is solved through studying VCS functioning with the further use of the data analysis component of the project management based on the application of the time series (TS) model, the construction of fuzzy TS trends, clustering for dominant fuzzy trends separation, extracting time series predicate, the similarity measure of time series, their correlation, prediction and correction of the forecast. Time series of the number of errors in the total number of changes, the number of improvements in the same number of changes, the number of new functions were used as program code metrics. The hypothesis of the trend permanency was chosen for prediction. The given approach was examined on the examples.

Version control system, time series, fuzzy trend, forecasting, forecast adjustment.

Denis Eduardovich Tsygankov, Ulyanovsk State Technical University, Post-Graduate Student at the Department of Applied Mathematics and Informatics of Ulyanovsk State Technical University; graduated from the Faculty of Radioengineering at Ulyanovsk State Technical University; an author of articles in the field of system analysis and design process automation. [e-mail: d.tsyg@mail.ru]D. Tsygankov,

Aleksandr Fedorovich Pokhilko, Ulyanovsk State Technical University, Candidate of Engineering, Associate Professor; graduated from Leningrad Polytechnic Institute named after M.I. Kalinin; Professor at the Department of Applied Mathematics and Informatics at Ulyanovsk State Technical University; an author of articles in the field of decision-making and integrated processes of CAD-systems [e-mail: afp@ulstu.ru]A. Pokhilko

Representing Design Process By Generalizing Elementary Operations to Semantic Unit Level 000_11.pdf

The design process can be represented by the system of project procedures described in the IDEFx methodology. That allows to decompose it into design stages. Design stage is a sequence of design solution formation actions. Such sequence consists of project operations or procedures and has completeness in terms of getting an object or its fragment with real semantic content (physical meaning). Each stage is strictly defined in terms of either its execution order or the input and output data that makes it impossible to change them and preserve the overall structure correctness of the design solution formation. The authors research the model of project activity processes representation with the use of the introduced concept of the design stage as a semantic unit and Open CASCADE Technology. The researches examine a lot of design conditions and limitations. On the basis of such conditions and limitations, with the use of Open CASCADE Libraries, the system of project procedures was developed. The software implementation of these procedures can provide the modifiability of project stages. Therefore, the representation of design process allows to accumulate, generalize and modify the process of design solution formation preserving the completeness of both the process and design solution.

Open cascade technology, automation, design stage, process, design activity, model, semantics, design procedure, open cascade technology, solution.

ELECTRICAL ENGINEERING AND ELECTRONICS

Viacheslav Andreevich Sergeev, Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS, Doctor of Engineering, Associate Professor; graduated from the Faculty of Physics of Gorky State Technical University; Head of Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS; Head of the Department of Radioengineering, Opto and Nanolectronics of Ulyanovsk State Technical University at Ulyanovsk Branch of Kotel’nikov IRE; an author of monographs, inventions, and articles in the field of researching and simulating semiconductor device and integrated circuit performance, and measuring their thermal characteristics. e-mail: sva@ulstu.ru. [e-mail: sva@ulstu.ru]V. Sergeev,

Iaroslav Gennadievich Tetenkin, Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS, graduated from the Faculty of Radioengineering of Ulyanovsk State Technical University; Lead Engineer of Ulyanovsk Branch of Kotel’nikov Institute of Radioengineering and Electronics (IRE) of RAS; an author of scientific publications and inventions in the field of computer-aided measurement and parameter analysis of semiconductor device and integrated circuit and measuring their thermal characteristics. [e-mail: ufire@mv.ru]I. Tetenkin

Determination of Digital Integrated Circuits Thermal Parameters With the Use of Temperature Dependence of Signal Delay Time 000_12.pdf

This article examines the well-known methods for measuring thermal parameters of digital integrated circuits (DIC). The opportunity to use DIC signal delay time as a temperature-sensitive parameter (TSP) in the process of measuring DIC thermal parameters is also proposed. It allows to overcome some of the current complexities and disadvantages of the well-known methods of measuring DIC thermal parameters with the use of DIC electrical parameters as TSP and to simplify the measurement process automation. The method of measuring DIC thermal parameters on the basis of measuring the frequency of the ring oscillator that consists of DIC inverters in the process of DIC self-heating with electric power consumed is considered in the article. The estimation of measurement accuracy of CMOS DIC thermal resistance component using the current method is also demonstrated. The automated software-hardware complex for researching CMOS DIC indicial thermal parameters that can significantly improve the accuracy of thermal parameters resolution capability is described.

Digital integrated circuits, thermal parameters, measurement, signal delay time, ring oscillator, oscillator frequency, temperature dependence.

Valeriia Vadimovna Voronina, Ulyanovsk State Technical University, Candidate of Engineering, Associate Professor at the Department of Information Systems of Ulyanovsk State Technical University; graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University; an author of articles in the field of intellectual analysis of time series. [e-mail: vvsh85@mail.ru]V. Voronina,

Albert Damirovich Mukhametzianov, Ulyanovsk State Technical University, Candidate for the Master’s Degree; graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University and got the Bachelor’s Degree in 2015; an author of articles in the field of intelligent system development. [e-mail: desperado@x-cart.com]A. Mukhametzianov,

Iuliia Sergeevna Baldina, Ulyanovsk State Technical University, Candidate for the Master’s Degree; graduated from the Faculty of Information Systems and Technologies of Ulyanovsk State Technical University and got the Bachelor’s Degree in 2015; an author of articles in the field of intelligent system development. [e-mail: uliya.baldina@gmail.com]I. Baldina

Development of Web-service for Operation With Programmable Logic Devices 000_13.pdf

The current information system is an integral resource for full-fledged operation with programmable logic devices (PLD) and with the functions of remote programming, knowledge storage and experience exchange of the particular field between developers. The result of the system operation is the model of fuzzy controller that represents an intelligent automated control system (ISAU) in a small way with the ability of adaption to changing conditions of operation (due to the fuzzy controller implemented through a fuzzy algorithm on pseudo-fuzzy language). The goal of the project is to provide the convenient integrated programming environment with the good condition for education. The article considers the description and the way of implementation of the project architecture; diagrams and stages of resulting fuzzy controller design process and the description of the developed decision support system for choosing PLD are shown

Cloud service, programmable logic device (pld), intelligent automated control system.

Georgii Mikhailovich Tamrazian, Ulyanovsk State Technical University, ost-Graduate Student at the Department of Telecommunications of Ulyanovsk State Technical University; graduated from Ulyanovsk State Technical University; an author of articles and patents in the field of redundant code soft decoding. [e-mail: tamrazz@bk.ru]G. Tamrazian,

Anatolii Afanasievich Gladkikh, Ulyanovsk State Technical University, Candidate of Engineering; graduated from S.M. Budyonny Military Communications Academy; finished his post-graduate studies at the same academy; Professor at the Department of Telecommunications at Ulyanovsk State Technical University; an author of a monograph, textbooks, articles, and patents in the field of noiseless coding and information security. [e-mail: a.gladkikh@ulstu.ru]A. Gladkikh,

Dmitrii Vladimirovich Ganin, Nizhny Novgorod State University of Engineering and Economics, Candidate of Economics, Associate Professor; graduated from Nizhny Novgorod State Agricultural Academy; Head of the Department of Infocommunication Technologies and Telecommunications at Nizhny Novgorod State University of Engineering and Economics; an author of articles in the field of infocommunications. [e-mail: ngiei135@mail.ru]D. Ganin

Hardware Implementation of the Optimal Ldpc Decoder 000_14.pdf

Low Density Parity Check (LDPC) codes become more useful in modern infocommunication systems because of their error-correcting capability. At the present time, LDPC codes have reached Shannon’s limit. Moreover, the application of such codes unlike the turbo codes don’t have any license limitations. These factors have become the cause of growing interest to LDPC codes. Despite an easy way of the codec implementation, soft decoding of LDPC codes is a complex computational process. This article deals in more detail with the main problems concerning the hardware implementation of LDPC decoder and the ways of their solving. It also demonstrates the simulation results of different ways to decoder implementation and the comparison of these ways. Furthermore, the article presents the method of LDPC codes list decoding that reduces materially computational load on decoder and speeds up its work operation. The use of various procedures and mechanisms described in the article will help to generate the optimal LDPC code decoder designed for a certain task.

Ldpc-код, ldpc code, soft decoder, fpga, cluster, tanner graph, list decoding.

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