Browsing Ústav telekomunikací by Title
Now showing items 1-20 of 175
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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 ... -
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 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 ... -
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 ... -
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 ... -
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 ... -
Balanced-Output CCCFOA and Its Utilization in Grounded Inductance Simulator with Various Orders
(IEEE, 2018-07-04)In this paper, a new realization of current-controlled current feedback operational amplifier with balanced voltage outputs (BO-CCCFOA) is presented. A resistorless grounded lossless positive inductance simulator (PIS) ... -
Behavioral model for emulation of ZC-CG-VDCC
(The Institute of Electronics, Information and Communication Engineers (IEICE), 2016-01-29)This paper presents a proposal and an experimental analysis of behavioral emulator of so-called z-copy controlled-gain voltage differencing current conveyor (ZC-CG-VDCC) based on commercially available devices. Most of ... -
Blockchain Evaluation Approaches: State-of-the-Art and Future Perspective
(MDPI, 2020-06-13)The present increase of attention toward blockchain-based systems is currently reaching a tipping point with the corporate focus shifting from exploring the technology potential to creating Distributed Ledger Technology ... -
Botnet C&C Traffic and Flow Lifespans Using Survival Analysis
(International Science and Engineering Society, o.s., 2017-03-27)This paper addresses the issue of detecting unwanted traffic in data networks, namely the detection of botnet networks. In this paper, we focused on a time behavioral analysis, more specifically said – lifespans of a ... -
Capacitance Multiplier Using Small Values of Multiplication Factors for Adjustability Extension and Parasitic Resistance Cancellation Technique
(IEEE, 2020-08-05)This paper presents a new concept of a capacitance multiplier using the topology of differential voltage buffer and current conveyor, where the capacitor is connected to the current input terminal. The presented topology ... -
Changes in Phonation and Their Relations with Progress of Parkinson’s Disease
(MDPI, 2019-01-22)Hypokinetic dysarthria, which is associated with Parkinson’s disease (PD), affects several speech dimensions, including phonation. Although the scientific community has dealt with a quantitative analysis of phonation in ... -
A CMOS Multiplied Input Differential Difference Amplifier: A New Active Device and Its Applications
(MDPI AG, 2017-01-26)This paper presents a newly developed active device, referred to as a multiplied input differential difference amplifier (MIDDA), which allows operations of summation/subtraction and multiplication of input signals. It was ...