Group website: https://www.utko.fekt.vut.cz/en/high-speed-data-networks

We research transmission technologies and communication protocols for high-speed data networks, including modern wireless technologies operating in both the licensed (5G+) and unlicensed (IEEE 802.11, LPWAN) frequency band, as well as optical and metallic networks. Our key activities include design, development and testing of communication systems, analysis of traffic and transmission parameters, design, simulation and measurement of data networks with a focus on ultra-high frequency communications (mmWave), modern mobile applications such as augmented reality, virtual reality, mechanisms of dynamic spectrum management, use of drones as autonomous flying base stations and modern electronic weareability - wearables.

Main research activities

• 5G + mobile systems (communication technologies in licensed and unlicensed frequency spectrum, communication on ultra-high frequencies - mmWave, modern mobile applications such as augmented reality, virtual reality, dynamic spectrum management mechanisms, use of drones as autonomous flying base stations, modern electronic wearability - wearables)
• Wireless communication technologies LPWA and 802.11
• Optical and metallic networks (design, development and testing of optical systems, penetration tests of optical fiber networks, analysis of traffic and transmission parameters, spectrum sharing analysis, design, simulation and measurement of networks)

Main research results

• BARCÍK, P.; MÜNSTER, P. Measurement of slow and fast polarization transients on a fiber-optic testbed. OPTICS EXPRESS, 2020, vol. 28, no. 10, p. 15250-15257. ISSN: 1094-4087. (https://dspace.vut.cz/items/9b1986ab-7617-4291-8f34-c8f2b68537fa)
• SAAFI, S.; VIKHROVA, O.; FODOR, G.; HOŠEK, J.; ANDREEV, S. AI-Aided Integrated Terrestrial and Non-Terrestrial 6G Solutions for Sustainable Maritime Networking. IEEE NETWORK, 2022, vol. 36, no. 3, p. 183-190. ISSN: 0890-8044. (https://ieeexplore.ieee.org/document/9829372)
• KOMOSNÝ, D. General Internet service assessment by latency including partial measurements. PeerJ Computer Science, 2022, vol. 8, no. 1, p. 1-15. ISSN: 2376-5992. (https://dspace.vut.cz/items/81b4e676-95b8-4244-ac1a-916d8541cce2)
• KOMOSNÝ, D. Evidential value of country location evidence obtained from IP address geolocation. PeerJ Computer Science, 2023, vol. 9, no. neuvedeno, p. 1-20. ISSN: 2376-5992. (https://dspace.vut.cz/items/a02fec3a-45bf-4b4c-b0e2-494b3b578c24)
• TAFINTSEV, N.; MOLTCHANOV, D.; CHIUMENTO, A.; VALKAMA, M.; ANDREEV, S. Airborne Integrated Access and Backhaul Systems: Learning-Aided Modeling and Optimization. IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2023, vol. 72, no. 12, p. 16553-16566. ISSN: 1939-9359. (https://ieeexplore.ieee.org/document/10175634)
• FUJDIAK, R.; BLAŽEK, P.; SLÁČIK, J.; MLÝNEK, P.; DROZD, M.; CHMELAŘ, P.; POHNER, M.; MLÍCH, J.; MIŠUREC, J.: VI2VS/600-GEN; Big data generator for critical energy infrastructure communication protocols (https://www.vut.cz/en/rad/results/detail/160900#vysledek-160900)

Group website: https://www.utko.fekt.vut.cz/en/energy-and-smart-grids

The research groups focuses on communication and transmission technologies for energy. It designs communication solutions, develops communication modules and units, performs reliability/vulnerability analyzes and implements stress and functional tests. It also researches and develops solutions for analysis, prediction and evaluation of transmitted data and other parameters in advanced analytics, sensors and measurements. Last but not least, it influences a number of trends by participation in the latest technological concepts and cooperation with leading transmission and distribution system operators, by contributions to regulatory frameworks and the national action plan itself - NAP SG.

Main research activities

• Intelligent measurement (communication infrastructure design, testing and integration of transmission technologies - wired and wireless, demand response systems, smart home concept, customer involvement and regulatory framework, data processing and prediction)
• Smart networks, infrastructure and island operations (methodologies for testing new transmission and communication technologies, issues of smart substations and distribution transformer stations, data transmission technologies over power lines - PLC, integration and issues of urban operations, black-out issues, reliability and availability of control and monitoring SCADA systems)
• E-Mobility (communication solutions to increase reliability, interoperability issues, secure infrastructure, verification of the suitability of transmission technologies and their integration)
• Intelligent buildings (analysis and implementation of communication technologies and protocols for building automation, design, verification, and integration of aggregation mechanisms for data collection within autonomous buildings, surveillance and visualization platform for property control)
• Prototyping, simulation, modeling and testing (experimental development and construction of terminal communication and transmission elements for reliable and secure infrastructures, verification of the design of communication equipments, pre-certification testing)

Main research results

• ROASCIO, G.; COSTA, G.; BACCELLI, E.; MALINA, L.; MATULEVICIUS, R.; MOMEU, M.; MORKEVICIUS, N.; RUSSO, E.; STOJANOVIC´, B.; TASIDOU, A. HArMoNICS: High-Assurance Microgrid Network Infrastructure Case Study. IEEE Access, 2022, vol. 10, no. 1, p. 115372-115383. ISSN: 2169-3536. (https://ieeexplore.ieee.org/document/9933432)
• VOHNOUT, R.; BUKOVSKÝ, I.; CHOU, S.; GEYER, J.; BUDÍK, O.; SHARMA, R.; PROKÝSEK, M.; HORVÁTH, T.; WYCKMANS, A. Living Lab Long-Term Sustainability in Hybrid Access Positive Energy Districts -A Prosumager Smart Fog Computing Perspective. IEEE Internet of Things Journal, 2023, vol. 10, no. 21, p. 18898-18908. ISSN: 2327-4662. (https://ieeexplore.ieee.org/document/10137645)
• VRTAL, M.; FUJDIAK, R.; BENEDIKT, J.; PRAKS, P.; BRIŠ, R.; PTÁČEK, M.; TOMAN, P. Time-Dependent Unavailability Exploration of Interconnected Urban Power Grid and Communications Network. Algorithms, 2023, vol. 16, no. 12, p. 1-21. ISSN: 1999-4893. (https://www.mdpi.com/1999-4893/16/12/561)
• MOŽNÝ, R.; MAŠEK, P.; MOLTCHANOV, D.; ŠTŮSEK, M.; MLÝNEK, P.; KOUCHERYAVY, Y.; HOŠEK, J. Characterizing Optimal LPWAN Access Delay in Massive Multi-RAT Smart Grid Deployments. Internet of Things, 2024, vol. 1, no. 1, p. 1-43. ISSN: 2542-6605. (https://www.sciencedirect.com/science/article/pii/S2542660523003244)
• HOLASOVÁ, E.; BLAŽEK, P.; FUJDIAK, R.; MAŠEK, J.; MIŠUREC, J. Exploring the Power of Convolutional Neural Networks for Encrypted Industrial Protocols Recognition. Sustainable Energy, Grids and Networks, 2024, vol. 38, no. June 2024, p. 1-11. ISSN: 2352-4677. (https://www.sciencedirect.com/science/article/pii/S2352467723002771)
• MLÝNEK, P.; MIŠUREC, J.; KRAJSA, O.; FUJDIAK, R.; SLÁČIK, J.; HANÁK, P.; MUSIL, P.; POSPÍCHAL, L.: KJ_funk; Communiaction Unit SMARTBOX (https://www.vut.cz/vut/aktuality-f19528/cenu-zlaty-amper-ziskal-smartbox-z-vut-na-jeho-vyvoji-spolupracuje-spolecnost-eg-d-ktera-jej-testuje-ve-sve-distribucni-siti-d255561)
• MLÝNEK, P.; JURÁŇ, R.: UWBAngleAnchor; UWB anchor for angkle measurement. (in cooperation with https://sewio.net

Group website: https://www.utko.fekt.vut.cz/en/energy-and-smart-grids

We deal with communication technologies and protocols for data transmission within the emerging communication scenarios for end users (Internet of Things) and industrial enterprises (Industry 4.0). The key point of research activities is the ability to design, construct and verify the functionality of the proposed devices and the subsequent software implementation of selected functionalities. Attention is focused on the development of terminal devices (sensors for measuring physical quantities) and communication units (aggregation gateways), which are deployed within intelligent networks (Smart Grids).

Main research activities

• Industrial communication systems (verification of communication parameters of LPWA technologies for M2M data transmission within Industry 4.0)
• Industrial networks and control systems (new automation solutions, digitization, localization and inventory, industrial communication protocols, transmission technologies with minimal response and high reliability, advanced virtualization and cyber-physical systems, IT/OT convergence, control systems, programmable logic controllers - PLC , implementation of technological solutions within the concepts of Industry 4.0 and smart factories)
• Use of electronic wearability in industrial applications (research of new communication technologies and protocols for wearable devices)
• Smart home (design of aggregation mechanisms for data processing within a smart home or automated buildings, development of prediction algorithms for automatic adjustment of household parameters based on user habits)
• Optical fiber sensors (measurement of temperature, pressure and vibration by single point and distributed sensor systems, design and implementation of sensor systems - phase sensitive OTDR, Raman OTDR, interferometers, FBG grating sensors, evaluation measurements)

Main research results

• ŠTŮSEK, M.; MOLTCHANOV, D.; MAŠEK, P.; MIKHAYLOV, K.; ZEMAN, O.; ROUBÍČEK, M.; KOUCHERYAVY, Y.; HOŠEK, J. Accuracy Assessment and Cross-Validation of LPWAN Propagation Models in Urban Scenarios. IEEE Access, 2020, vol. 8, no. 1, p. 154625-154636. ISSN: 2169-3536. (https://dspace.vut.cz/items/b6624612-0dd6-4a5a-957f-9543aadad0dd)
• SAAFI, S.; FODOR, G.; HOŠEK, J.; ANDREEV, S. Cellular Connectivity and Wearable Technology Enablers for Industrial Mid-End Applications. IEEE COMMUNICATIONS MAGAZINE, 2021, vol. 59, no. 7, p. 1-7. ISSN: 0163-6804. (https://ieeexplore.ieee.org/document/9502661)
• ŠTŮSEK, M.; MOLTCHANOV, D.; MAŠEK, P.; MIKHAYLOV, K.; HOŠEK, J.; ANDREEV, S.; KUCHERYAVY, E.; KUSTAREV, P.; ZEMAN, O.; ROUBÍČEK, M. LPWAN Coverage Assessment Planning without Explicit Knowledge of Base Station Locations. IEEE Internet of Things Journal, 2022, vol. 9, no. 6, p. 4031-4050. ISSN: 2327-4662. (https://ieeexplore.ieee.org/document/9507528)
• ŠTŮSEK, M.; MAŠEK, P.; MOLTCHANOV, D.; STEPANOV, N.; HOŠEK, J.; KOUCHERYAVY, Y. Performance Assessment of Reinforcement Learning Policies for Battery Lifetime Extension in Mobile Multi-RAT LPWAN Scenarios. IEEE Internet of Things Journal, 2022, vol. 9, no. 24, p. 25581-25595. ISSN: 2327-4662. (https://ieeexplore.ieee.org/document/9854077)
• MYŠKA, V.; LEVEK, V.; BURGET, R.; KOLAŘÍK, M.; ŠTEFFAN, P.; HÁZE, J. IoT mechatronic access control system ePRO 1.4. IEEE Consumer Electronics Magazine, 2023, p. 1-8. ISSN: 2162-2248. (https://ieeexplore.ieee.org/document/10313021)
• MLÝNEK, P.; JURÁŇ, R.; MRÁZ, Ľ.; Sewio Networks s.r.o., Brno, Medlánky: Moving Object Position Tracking Assembly. 37207, (2023) (part of Sewio loclization system - https://www.sewio.net/)
• MLÝNEK, P.; MAŠEK, P.; MIŠÁK, S.: SmartModule_CAT; Modular IoT communication module. VUT FEKT UTKO Technická 12, 61600 Brno (Part of #VodafoneUniLab - https://www.vodafone.cz/podnikatele/internet-veci/unilab/)

Leader: Assoc. Prof. Lukáš Fujcik

A part of our researchers develop chips used in the processing of sensor signals, such as those from bio-, chemo-, and pressure sensors. We also investigate various types of AD and DA converters (or their components), including, for example, reference sources, samplers, and filters. Moreover, the group’s program incorporates solving special systems for space applications through all design and development stages.

Major 4-year output:

• A universal portable potentiostat (nanoPOT).
• A functional sample with CDTA and CCTA integrated circuits for the current mode.
• An integrated circuit to measure biologically and toxically significant substances.
• An integrated system for EMG signal processing.
• A tester to assess radiation in AD converters.
• A module to regulate the temperature of samples in radiation experiments.

Leader: Assoc. Prof. Pavel Šteffan

Primarily we develop measuring and monitoring systems to manage experiments and to measure with electrochemical sensors. Our other interests are mainly within building automation, telemetry, and the unique identification of persons. Upon the completion of a project, the end customers are presented with custom-designed, ready-to-use systems including appropriate software.

Major 4-year outputs:

• The engineering and development of 1st and 2nd generation intelligent programmable lock cylinder assemblies for the TOKOZ company; both product lines are commercially manufactured and delivered to users.
• Smart lighting sources designed and developed on demand from the ESYST company; the intensity and color of the light are variable to suit the customer’s preferences
• A triaxial nanopositioning device to measure optical resonators; the device was engineered jointly with the BD Sensors company, where it also finds use in the manufacturing of pressure sensors.
• A monitoring system to measure composite materials.
• The CANet – Universal CAN-bus Sensor Network.
• Software for the Honeywell Lyric Wi-Fi programmable thermostat.
• A data-logger for an optical spectral analyzer.

Leader: Prof. Josef Diblík

The experts affiliated to our group investigate the qualitative properties of solutions of discrete and continuous dynamical systems. In particular, they focus on applicable numerical approaches and the issues of stability, controllability, identification of integer and fractional order systems as well as on the analysis of some classes of nonlinear partial differential equations that arise in mathematical physics and various types of engineering. Outputs of the group have form of research papers.

Most important publications (for the last 4 years)

• LIU, Z.; RADULESCU, V.; ZHANG, J. A planar Schrodinger-Newton system with Trudinger-Moser critical growth. CALCULUS OF VARIATIONS AND PARTIAL DIFFERENTIAL EQUATIONS, 2023, Vol. 62, No. 4, 1-31. (AIS Q1, D1), DOI: https://doi.org/10.1007/s00526-023-02463-0
• DIBLÍK, J.; KHUSAINOV, D.; SHATYRKO, A.; BAŠTINEC, J.; SVOBODA, Z. Absolute Stability of Neutral Systems with Lurie Type Nonlinearity. Advances in Nonlinear Analysis, 2022, Vol. 11, No. 1, 726-740. (AIS Q1, D1), DOI: https://doi.org/10.1515/anona-2021-0216
• BEREZANSKY, L.; DIBLÍK, J.; SVOBODA, Z.; ŠMARDA, Z. Simple tests for uniform exponential stability of a linear delayed vector differential equation. IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 2022, Vol. 8, No. 3, 1537-1542. (AIS Q1, D1), DOI: https://doi.org/10.1109/TAC.2021.3069901
• DIBLÍK, J. Bounded solutions to systems of fractional discrete equations. Advances in Nonlinear Analysis, 2022, Vol. 11, No. 1, 1614-1630. (AIS Q1, D1), DOI: https://doi.org/10.1515/anona-2022-0260
• BRAVERMAN, E.; DIBLÍK, J.; RODKINA, A.; ŠMARDA, Z. Stabilization of cycles for difference equations with a noisy PF control. AUTOMATICA, 2020, Vol. 115, No. 1, 1-8. (AIS Q1, D1), DOI: https://doi.org/10.1016/j.automatica.2020.108862