Browsing Ústav telekomunikací by Title
Now showing items 1-20 of 265
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2DOF multi-objective optimal tuning of disturbance reject fractional order PIDA controllers according to improved consensus oriented random search method
(Elsevier, 2020-09-30)This study presents a Fractional Order Proportional Integral Derivative Acceleration (FOPIDA) controller design methodology to improve set point and disturbance reject control performance. The proposed controller tuning ... -
Accuracy Assessment and Cross-Validation of LPWAN Propagation Models in Urban Scenarios
(IEEE, 2020-08-12)With the proliferation of machine-to-machine (M2M) communication in the course of the last decade, the importance of low-power wide-area network (LPWAN) technologies intensifies. However, the abundance of accurate propagation ... -
Accurate Empirical Fractional-Order Electrical Models of Young and Old Dentines
(IEEE, 2020-07-20)Electrical impedance spectroscopy (EIS) is a fast, non-invasive, and safe technique for bioimpedance measurement. In dental research, EIS has been used to detect tooth cracks and caries with higher accuracy than visual and ... -
Activation Process of ONU in EPON/GPON/XG-PON/NG-PON2 Networks
(MDPI, 2018-10-16)This article presents a numerical implementation of the activation process for gigabit and 10 gigabit next generation and Ethernet passive optical networks. The specifications are completely different because GPON, XG-PON, ... -
An Additional Approach to Model Current Followers and Amplifiers with Electronically Controllable Parameters from Commercially Available ICs
(Versita, 2012-11-22)Several behavioral models of current active elements for experimental purposes are introduced in this paper. These models are based on commercially available devices. They are suitable for experimental tests of current- ... -
Adjustable Multiphase Sinusoidal Oscillator with Fractional–Order Elements
(IEEE, 2019-10-30)This paper presents a fractional–order multiphase oscillator with adjustable FO (Frequency of Oscillation). The oscillator utilizes the following components: CCTA (Current Conveyor Transconductance Amplifier), OTA (Operational ... -
All-Pass Time Delay Circuit Magnitude Response Optimization Using Fractional-Order Capacitor
(IEEE, 2018-08-05)Paper presents the integer- and fractional-order cases of a voltage-mode all-pass time delay circuit, or more frequently called as all-pass filter, employing a single negative-type current-controlled current inverting ... -
Analog Multipliers-Based Double Output Voltage Phase Detector for Low-Frequency Demodulation of Frequency Modulated Signals
(IEEE, 2021-06-25)This work deals with the design of a simple double output voltage phase detector, using a specific type of analog multiplier, and its application in a frequency demodulator. The design of active parts was performed in ... -
Analogue Implementation of a Fractional-Order PI^{\lambda} Controller for DC Motor Speed Control
(IEEE, 2019-06-12)In this paper, an approach to design a fractional-order integral operator s(lambda) where -1 < lambda <0, using an analogue technique, is presented. The integrator with a constant phase angle -80.1 degree (i.e. order lambda ... -
Analysis and Experimental Evaluation of Power Line Transmission Parameters for Power Line Communication
(Slovak Academy of Sciences, 2015-06-09)The article describes a way of evaluating the power line channel frequency response and input impedance by means of the linear time-invariant (LTI) power line generator. Two possible methods are introduced for the calculation ... -
Analysis and Verification of Identical-Order Mixed Matrix Fractional-Order Capacitor Networks
(IEEE, 2018-07-02)In the open literature while capacitors are introduced with -90 degrees phase angle, here we described our fabricated polymer composite, mixed matrix, as a fractional-order capacitor (FoC). The effect on phase and ... -
Analysis of Dynamic Performance of Half-Wave Rectifiers and its Improvements
(Kaunas University of Technology, 2014-02-03)This paper deals with the analysis of dynamic behaviour of half-wave rectifiers and compares circuit solutions using standard operational amplifiers and current conveyors as active elements. The voltage and current sourcing ... -
Analysis of the Nosema Cells Identification for Microscopic Images
(MDPI, 2021-04-28)The use of image processing tools, machine learning, and deep learning approaches has become very useful and robust in recent years. This paper introduces the detection of the Nosema disease, which is considered to be one ... -
Analytical TCP Model for Millimeter-Wave 5G NR Systems in Dynamic Human Body Blockage Environment
(MDPI, 2020-07-12)Dynamic blockage of radio propagation paths between the user equipment (UE) and the 5G New Radio (NR) Base Station (BS) induces abrupt rate fluctuations that may lead to sub-optimal performance of the Transmission Control ... -
Anomalous Behaviour of Cryptographic Elliptic Curves over Finite Field
(Kaunas University of Technology, 2017-10-22)New wireless technologies and approaches enable to connect even the simplest sensors with limited computational power to the global network. The need for efficient and secure solutions is growing with the wider use of these ... -
Anonymous Attribute-Based Credentials in Collaborative Indoor Positioning Systems
(SciTePress, 2021-07-08)Collaborative Indoor Positioning Systems have recently received considerable attention, mainly because they address some of the existing limitations of traditional Indoor Positioning System. In Collaborative Indoor Positioning ... -
Application for GPON Frame Analysis
(MDPI, 2019-06-21)This article presents a design of a database model used to gather and analyze data frames transmitted over gigabit passive optical network (GPON) in the downstream direction. An issue with this kind of system is the ... -
Application Perspective on Cybersecurity Testbed for Industrial Control Systems
(MDPI, 2021-12-04)The low-power wide-area (LPWA) technologies, which enable cost and energy-efficient wireless connectivity for massive deployments of autonomous machines, have enabled and boosted the development of many new Internet of ... -
Applications of novel behavioral implementation of a controllable generalized current conveyor
(IEEE, 2018-04-20)This contribution presents a novel modification of a behavioral model for a generalized current conveyor of second generation based on commercially available active devices. This model is suitable for preliminary tests of ... -
Approximal operator with application to audio inpainting
(Elsevier, 2020-09-09)In their recent evaluation of time-frequency representations and structured sparsity approaches to audio inpainting, Lieb and Stark (2018) have used a particular mapping as a proximal operator. This operator serves as the ...