Recent Submissions

  • Measurement of slow and fast polarization transients on a fiber-optic testbed 

    Barcík, Peter; Münster, Petr (OSA—The Optical Society, 2020-05-05)
    Polarization changes inside a single-mode fiber due to birefringence are studied in this paper. We demonstrate a measurement system for the detection of fast and slow polarization transients in a single-mode optical fiber ...
  • Illuminance Sensing in Agriculture Applications Based on Infra-Red Short-Range Compact Transmitter Using 0.35um CMOS Active Device 

    Šotner, Roman; Jeřábek, Jan; Polák, Ladislav; Petržela, Jiří; Jaikla, Winai; Tuntrakool, Sunti (IEEE, 2020-01-29)
    This paper introduces a novel electronic system for simplex low-bitrate infra-red (IR) communication applications. The transmitter is implemented completely by analog building blocks, formed with the help of a recently ...
  • On Orthogonal Projections for Dimension Reduction and Applications in Augmented Target Loss Functions for Learning Problems 

    Breger, Anna; Orlando, Jose Ignacio; Harár, Pavol; Dörfler, Monika; Klimscha, Sophie; Grechenig, Christoph; Gerendas, Bianca; Schmidt-Erfurth, Ursula; Ehler, Martin (Springer, 2019-01-02)
    The use of orthogonal projections on high-dimensional input and target data in learning frameworks is studied. First, we investigate the relations between two standard objectives in dimension reduction, preservation of ...
  • Research of the Operator's Advisory System Based on Fuzzy Logic for Pelletizing Equipment 

    Andriukaitis, Darius; Laucka, Andrius; Valinevicius, Algimantas; Zilys, Mindaugas; Markevicius, Vytautas; Navikas, Dangirutis; Šotner, Roman; Petržela, Jiří; Jeřábek, Jan; Herencsár, Norbert; Klimenta, Dardan (MDPI, 2019-11-12)
    Fertilizer manufacturing in the chemical industry is closely related with agricultural production. More than a half of raw materials for food products are grown by fertilizing plants. The demand of fertilizers has been ...
  • Efficiency Tests of DBA Algorithms in XG-PON 

    Sikora, Pavel; Horváth, Tomáš; Münster, Petr; Oujezský, Václav (MDPI, 2019-07-08)
    Sophisticated dynamic bandwidth allocation (DBA) algorithms can dramatically improve or worsen throughput and delay in whole networks. It is very important to choose the right DBA algorithm. Our work tests static assignment ...
  • Application for GPON Frame Analysis 

    Holík, Martin; Horváth, Tomáš; Oujezský, Václav (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 ...
  • Electronically Adjustable Emulator of the Fractional-Order Capacitor 

    Dvořák, Jan; Kubánek, David; Herencsár, Norbert; Kartci, Aslihan; Bertsias, Panagiotis (Kaunas University of Technology, 2019-12-12)
    This paper presents a design of the controllable emulator of the FOC (Fractional-Order Capacitor) and its application. The circuit is based on 5th-order RC topology (type Foster I) where the passive elements in the topology ...
  • Fractional-Order Phase Shifters with Constant Magnitude Frequency Responses 

    Šotner, Roman; Langhammer, Lukáš; Jeřábek, Jan; Ushakov, Peter A.; Dostál, Tomáš (Kaunas University of Technology, 2019-10-10)
    This contribution presents and experimentally analyzes the idea how to reach the constant magnitude as well as the phase response in the fractional-order (FO) phase when shifting two-ports. The straightforward method ...
  • Adjustable Multiphase Sinusoidal Oscillator with Fractional–Order Elements 

    Dvořák, Jan; Kubánek, David; Koton, Jaroslav; Jeřábek, Jan; Smékal, David (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 ...
  • Novel Reconnection-less Reconfigurable Filter Design Based on Unknown Nodal Voltages Method and Its Fractional-Order Counterpart 

    Langhammer, Lukáš; Šotner, Roman; Dvořák, Jan; Jeřábek, Jan; Ushakov, Peter A. (Kaunas University of Technology, 2019-06-26)
    A novel solution of reconnection-less electronically reconfigurable filter is introduced in the paper. The filter is designed based on unknown nodal voltages method (MUNV) using operational transconductance amplifiers ...
  • Multifunctional Electronically Reconfigurable and Tunable Fractional-Order Filter 

    Dvořák, Jan; Jeřábek, Jan; Bečková, Zuzana; Kubánek, David; Blažek, Petr (Kaunas University of Technology, 2019-02-11)
    In this paper the authors present a multifunctional reconfigurable fractional-order filter performing a low-pass, high-pass, band-pass and band-reject transfer function. The filter is based on two types of active elements, ...
  • Development of Cyber-physical security testbedbased on IEC61850 architecture 

    Blažek, Petr; Fujdiak, Radek; Mlýnek, Petr; Mišurec, Jiří (Kaunas University of Technology, 2019-06-10)
    The paper focuses on security in industrial control systems. Numerous protocols and their incompatibility are undermining the security design. Also, the IEC 61850 standard focuses on these issues; in detail, it deals with ...
  • Development of IQRF Technology: Analysis, Simulations and Experimental Measurements 

    Fujdiak, Radek; Mlýnek, Petr; Malina, Lukáš; Orgoň, Miloš; Sláčik, Ján; Blažek, Petr; Mišurec, Jiří (Kaunas University of Technology, 2019-04-11)
    The past years brought many changes, which accelerated the development of different communication approaches and technologies. Nowadays, wireless technologies become the accelerators for a wide range of new applications. ...
  • Fractional-Order Asymptotical Phase Shifter With Flat Magnitude Response 

    Šotner, Roman; Langhammer, Lukáš; Jeřábek, Jan; Dostál, Tomáš (IEEE, 2019-06-26)
    This work deals with design of fractional-order asymptotical phase shifter having constant magnitude response within almost three decades (100 Hz – 100 kHz) and frequency dependent phase difference going from 0 to 45 ...
  • Analogue Implementation of a Fractional-Order PI^{\lambda} Controller for DC Motor Speed Control 

    Herencsár, Norbert; Kartci, Aslihan; Koton, Jaroslav; Šotner, Roman; Alagoz, Baris Baykant; Yeroglu, Celaleddin (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 ...
  • Enhancement of Conventional Beat Tracking System Using Teager–Kaiser Energy Operator 

    Ištvánek, Matěj; Smékal, Zdeněk; Spurný, Lubomír; Mekyska, Jiří (MDPI, 2020-01-04)
    Beat detection systems are widely used in the music information retrieval (MIR) research field for the computation of tempo and beat time positions in audio signals. One of the most important parts of these systems is ...
  • New Security Improvements in Next-Generation Passive Optical Networks Stage 2 

    Člupek, Vlastimil; Horváth, Tomáš; Münster, Petr; Oujezský, Václav (MDPI, 2019-10-25)
    Passive optical networks are currently the most promising solution for access networks. These networks rely on broadcast signal distribution in the downstream direction and unicast signal transmission in the upstream ...
  • Environmental Monitoring with Distributed Mesh Networks: An Overview and Practical Implementation Perspective for Urban Scenario 

    Ometov, Aleksandr; Bezzateev, Sergey; Voloshina, Natalia; Mašek, Pavel; Komarov, Mikhail (MDPI, 2019-12-10)
    Almost inevitable climate change and increasing pollution levels around the world are the most significant drivers for the evolution of environmental monitoring solutions. Recent activities in wireless sensor networks have ...
  • Linear function blocks following recent trends in analog circuit design 

    Herencsár, Norbert (VUT v Brně, 2015-04-30)
    By following the most recent trend and progress in analog signal processing, this habilitation thesis deals with the latest developments in areas such as single-ended and fully-differential first-order all-pass filter ...
  • A new generalized projection and its application to acceleration of audio declipping 

    Rajmic, Pavel; Záviška, Pavel; Veselý, Vítězslav; Mokrý, Ondřej (MDPI, 2019-09-19)
    In convex optimization, it is often inevitable to work with projectors onto convex sets composed with a linear operator. Such a need arises from both the theory and applications, with signal processing being a prominent ...

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