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Original title in Czech: Elektronika a sdělovací technikaFEKTAbbreviation: PP-ESTAcad. year: 2015/2016
Programme: Electrical Engineering and Communication
Length of Study: 4 years
Accredited from: 25.7.2007Accredited until: 31.12.2020
Profile
The doctor study programme provides the specialised university education to the graduates of the previous master study in electronics and communication technologies. The students are educated in various branches of theoretical and applied electronics and communication techniques. The students make deeper their theoretical knowledge of higher mathematics and physics, and they earn also knowledge of applied informatics and computer techniques. They get ability to produce scientific works.
Key learning outcomes
The doctors are able to solve scientific and complex engineering tasks from the area of electronics and communications. Wide fundamentals and deep theoretical basis of the study program bring high adaptability and high qualification of doctors for the most of requirements of their future creative practice in all areas of electronic engineering and communications. The doctors are competent to work as scientists and researchers in many areas of basic research or research and development, as high-specialists in the development, design, construction, and application areas in many institutions, companies, and organisations of the electrical and electronic research, development, and industry as in the areas of communication and data transmission services and systems, inclusively in the special institutions of the state administration. In all of these branches they are able to work also as the leading scientific-, research-, development- or technical-managers.
Occupational profiles of graduates with examples
The doctors are able to solve scientific and complex engineering tasks from the area of electronics and communication. Wide fundamentals and deep theoretical basis of the study program bring high adaptability and high qualification of doctors for the most of requirements of their future creative practice in all areas of electronic engineering and communications. The doctors are competent to work as scientists and researchers in many areas of basic research or research and development, as high-specialists in the development, design, construction, and application areas in many institutions, companies, and organizations of the electrical and electronic research, development, and industry as in the areas of communication and data transmission services and systems, inclusively in the special institutions of the state administration. In all of these branches they are able to work also as the leading scientific-, research-, and development- or technical-managers.
Guarantor
prof. Ing. Aleš Prokeš, Ph.D.
Issued topics of Doctoral Study Program
The goal of this project is searching for advanced algorithms for driving of stepper motors using a feedback loop and information about status of the motor. Focus on algorithms without using position sensors. Only BEMF measurement can be used and important task is to reliably detect status and position of the motor. Examples of the algorithms are algorithm for power efficient driving and decreasing of heating of the motor by reducing the torque to optimum value e.g. during constant speed rotation. Other possibility is algorithm for reaching given position in shortest possible time, were it is necessary based on status of the motor to precisely control the acceleration and mainly the deceleration.
Tutor: Horský Pavel, doc. Dr. Ing.
The project is focused on the analysis of single-phase EMI filters. The analysis has to be focused on the uncertain impedance termination of the EMI filters. The termination has a dominant influence on the filter's insertion loss and also on so call "worst-case" performance. The results will be checked by a lot of measurements and also several mathematical analyses. For these analyses will be designed accurate filter's models.
Tutor: Dřínovský Jiří, Ing., Ph.D.
At present, there are interesting MIO, discrete devices and new materials which allow to find solutions of microwave parts of the ground as well as the space segments on new principles. These are namely antenna feeds with integrated low noise amplifiers, power amplifiers, quadrature frequency converters, local oscillators with low phase noise, frequency filters, frequency synthesizers, modulators and demodulators. A part of the project will be studies of application possibilities, parameters analysis and designs of extensional units of a satellite communication chain.
Tutor: Kasal Miroslav, prof. Ing., CSc.
The goal of this project is to find new methods for improving ultrasound sensors for distance measurement used in automotive industry. Current trend is to use transformer less direct drive of the piezo transducer by an integrated circuit. Consequence is change of parameters of the resonance circuit. Focus you work e.g. on method how to fast damp reverberations of the piezo transducer to allow the shortest possible distance measurement. Other trend is the possibility to use coding and concurrent measurement using several sensors, where the transmitted code is used in the receiver for echo recognition.
The next generation of terrestrial digital video broadcasting standard (DVB-T2) incorporates the option of using multiple-input single-output (MISO) spatial diversity transmission technique. This dissertation thesis focuses on the exploring and analysis of signals transmission in second generation terrestrial digital television standard (DVB-T2/T2-Lite) which can use spatial diversity transmission techniques, e.g. SISO, MISO and MIMO. A prerequisite of the successful analysis is a creation of an appropriate simulation model, allows to simulate and analyze the signals transmission which consider multipath transmission and selective fading, and with adjustable system parameters of the transmitter and receiver system blocks. There is considered a possible verification of theoretical (simulation) results by measurement on real signals of wireless services or in laboratory conditions. The main aim of this work is the definition of the influence of the system parameters on the bit error rate and on the quality of the signal transmission. There can be also considered a possible coexistence with mobile services (LTE/LTE-A) in a shared frequency bands.
Tutor: Polák Ladislav, doc. Ing., Ph.D.
Doctoral thesis is focused on transmission analysis of the digital television in a new DVB-T2 Lite (Digital Video Broadcasting – 2nd Generation Terrestrial) and NGH (Next Generation Handheld) standards. Prerequisite of the successful analysis is design of convenient simulation model of the transmission and digital modulation with optional parameters of each block and verification of the model by realization of experimental measurements. Model of the transmission channel should be designed with the possibility of multipath reception and selective fading simulation. The aim of the work is evaluation of the modulator and transmission channel parameters on achieved bit-error rate and quality of the transmission and mobile services.
Tutor: Kratochvíl Tomáš, prof. Ing., Ph.D.
The aim of the project is to develop methods of analysis of signal transmission on general interconnects of the kind of coupled multiconductor transmission lines by means of FDTD (Finite-Difference Time-Domain) techniques. The interconnects can be nonuniform in general, with frequency-dependent parameters as well as under nonzero initial conditions. The solution should take into account not only nonlinear terminating networks but also possible nonlinearity of the interconnect itself. Proposed methods should be more accurate, faster and more generally applicable compared to methods available in a literature. An interested person is supposed to know techniques of programming in Matlab.
Tutor: Brančík Lubomír, prof. Ing., CSc.
The aim of the project is to develop techniques of the analysis of stochastic changes of interconnects parameters in electronic systems on a basis of the theory of stochastic differential equations (SDE). The subject of the research will be devoted partly to the application of ordinary SDEs, useful to describe models with lumped parameters, and partly to the study of the applicability of partial SDEs, useful for continuous models based on the telegraphic equations. It is expected generalization of some proposed techniques towards the analysis of hybrid electronic systems based on stochastic differential-algebraic equations (SDAE). An applicant is assumed to be interested in mathematics and programming in Matlab environment.
The aim of the project is to develop possibilities of the application of Volterra series, in conjunction with multivariable Laplace transformation and association variable method, for the analysis of nonlinear electronic systems. Within the project, the attention should be paid to systems with both lumped and distributed parameters, forcefully to the transient analysis and simulation of transmission line models with nonlinearities. An applicant is assumed to be interested in mathematics and programming in Matlab environment.
This work deals with synthesis/approximation of network building blocks (integrator, derivator, etc.) of the fractional order circuit by help of chains of subparts employing bilinear transfer sections of the integer order where independent electronic control of the zero and pole location is allowed. This approximation (valid in limited frequency bandwidth) allows to obtain fractional exponent of the Laplace operator s and construction of the so-called “half integrator” (1/s^0.5) for example. The work in this topic is focused to circuit theory but partial results will be verified experimentally with attention to practical applications.
Tutor: Šotner Roman, doc. Ing., Ph.D.
The aim of the project is to evaluate properties and behaviour of spark discharge in various environments with high level of dust dispersed and also in solid explosives. Large amount of discharge energy is necessary to be monitored in real time. Suitable measuring circuit should be design for measurement and evaluation of released energy. Monitoring of generated spark energy is not possible to be realized recently. Obtained results have to be supported by significant amount of measurements. Proposal of suitable measurement procedure for recording and analysis of generated spark discharge should also be a part of the project.
Doctoral thesis is focused on analysis of the critical coexistence scenarios between the services of the digital television (eg. DVB-T/T2, NGH) and wireless services of mobile communications (eg. GSM/UMTS/LTE/ZigBee/BT/WiGig). In case of non-proper frequency selection in the shared frequency bands, these services can disturb each other and consequently critically interfere. Prerequisite of the successful solution is definition of the collision scenarios and recommendations for proper frequency bands selection. The aim of the work is analysis of the coexistence, realization of the simulation models and verification by using of real digital television and mobile communication signals and measurements.
5G is the next step in the evolution of advanced wireless communication technologies where wireless equipment can work with radio frequency signals provided by various communication systems in a shared frequency band. This dissertation thesis focuses on the definition and exploring the possible coexistence scenarios of advanced wireless communication services (LTE/LTE-A, WiGig) and digital video broadcasting services (DVB-T/T2/T2-Lite, mobile NGH). These scenarios can be critical when a partial or full loss of signals provided by considered systems can occur, and noncritical when both systems can coexist without significant performance degradation. The main aim of this work is to explore coexistence of considered wireless systems and to develop simulation models. There is considered a possible verification of theoretical (simulation) results by measurement on real signals of wireless services or in laboratory conditions.
The topic of the proposed dissertation is focused on the use of optical wireless links in fully-photonic design that are designed for high-speed data communication or transmissions of ultrastable signals without any electro-optical conversion. The atmosphere brings to the transmission channel random attenuation and delay, which should be appropriately compensated. The project includes both theoretical and experimental studies of the atmospheric optical channel, modeling of its characteristics, and design and verification of compensatory techniques. A potential candidate should have an interest in experimentation and practical implementation of transmission systems, e.g. on the basis of FPGA.
Tutor: Kolka Zdeněk, prof. Dr. Ing.
Proposed project is oriented to detection of alcohol using speech signal analysis. The aim of this project is development and testing of special algorithms for investigation of alcohol intoxication in low level which is not audible but affect the activity and behaviour of persons. Development of algorithms will be based on robust DSP methods. In addition, some specific databases under realistic conditions will be created.
Tutor: Sigmund Milan, prof. Ing., CSc.
Proposed project deals with analysis of acoustic signals occuring in wilderness and nature reserves. The aim of the project is development and testing of algorithms for automatic recognition of gunshots in open space. Analysis of detected sounds will be based on robust DSP methods. Systems developed for use in wilderness must be able to recognize close as well as distant gunshots. Moreover, a specific database of acoustic signals will be created in realistic conditions.
Due to the higher power efficiency, the power amplifiers are often used in their nonlinear operating region. This results in increased adjacent channel emissions and BER. The proposed topic is oriented towards the research of amplifier nonlinearity correction using digital signal processing method called predistortion. The focus is in the application of predistortion in MIMO systems with filter bank multicarrier (FBMC) signals. The cooperation with JKU Linz and/or TU Wien is possible in the subject.
Tutor: Maršálek Roman, prof. Ing., Ph.D.
Hetnets will be an indispensable structure in future 5G networks. However network coordination to achieve high gains in Hetnets is very complex and requires too many resources. We thus want to investigate distributed coordination schemes that possibly offer high quality with lower complexity. Co-directed by Dr. Stefan Schwarz.
Tutor: Rupp Markus, prof.
The aim of the project is study of synchronized distributed SDR receivers and its aplication for satellite communication. System should allow simultaneous reception and data extraction of multiple signals. The main target of the study is probability enhancement of errorfree data reception, use of distributed system gain and redundancy of stations. System is determined for data reception from experimental satellites in UHF band.
Tutor: Urbanec Tomáš, Ing., Ph.D.
The subject of this project is focused on research of methods for precise personal navigation based on data fusing of a few independent sources: GNSS receiver, inertial systems (electronic compass, accelerometer, gyroscope etc.). The goal of this work is investigation of effective fusing algorithms (using extended Kalman filtering, neural networks) for precise pedestrian positioning based on characterization of sensors. Results of this research will be used by rescue workers, worker in dangerous plant etc.
Tutor: Šebesta Jiří, doc. Ing., Ph.D.
Presented topic consists in synthesis and design of filtering circuits and two-ports generally that allow electronic change of the transfer type and control of particular parameters of the filter. Single-input and single-output structures (SISO), where change of input or output ports of circuit (typical for common multifunctional types) is not required, are preferred. Electronic reconfiguration of the filter response can be favorable in specific applications where mechanical reconnection of input or/and output of the circuit is undesirable. An utilization of existing active elements or development of new own device(s) is assumed.
Research is focused on modeling, simulations and experimental verification of circuit realizations of higher-order harmonic oscillators and inharmonic generators. The main task is to found features and application possibilities of circuits with higher order than 3 and circuits defined by differential equations of fractional order. An attention will be concentrated on frequency tunability, phase and magnitude relations between generated signals and suitable amplitude stabilization especially. Part of the work deals with detailed description of signal generation based on linear and nonlinear mathematical operations that are allowed by implementation of so-called constant phase elements producing constant phase shift between excitation signal and response.
System level descriptions allow mathematical abstractions of the physical layer so that simulations can be computed much faster and thus hundreds of users can be considered. In particular new techniques such as Massive MIMO, Vertical Sectorization and Full Dimensional MIMO, Ultra dense networks, Joint Transmission Techniques can be considered. Co-directed by Dr. Martin Taranetz.
Computational electromagnetics is characteristic by computationally demanding tasks. Acceptable execution time can be reached by the implementation of parallel processes on multi-processor and multi-kernel workstations or by the exploitation of graphical cards. Research in frame of the project is focused of a hybrid approach based on the optimal distribution on different processors, graphical cards and clusters of computers following the defined objectives. Attention should be turned to an adaptive distribution which is able to consider the nature of the solved task, workload of partial subsystems and preferences of users.
Tutor: Raida Zbyněk, prof. Dr. Ing.
This topic is focused towards the research of Filter Bank MultiCarrier (FBMC) technique – the candidate for 5G communication systems. The goal is to investigate the FBMC performance in the context of large number of transceiver (uplink or dowlink) antennas – so called massive MIMO. In such scenario, the use of the low-cost front-end is considered, resulting in icreased influence of imperfections such as nonlinearity, IQ imbalance or phase noise. Empasis of the topis is on the research of new signal processing methods.
Recent trends in the utilization of prospective electronic technologies in the automotive industry include among others applications of wireless sensor networks, localization techniques for short distances, data (multimedia) transmission in the vehicle compartment, or car to car and car to infrastructure communication (Car2X technologies). Fruitfulness of such techniques implementation depends among others on both the perfect knowledge of the transmission channel and on the choice of a suitable wireless technology. The UWB (Ultra Wide-Band) in 3 - 11 GHz and 57 - 64 GHz or IR (Infra Red) technologies are considered to be most promising for such applications. The aim of the project is research into transmission channels properties and creation of the channel models for applications aimed at positioning and data communication in outdoor environment and vehicle interior and design of the communication and localization system concepts ensuring reliable functionality.
Tutor: Prokeš Aleš, prof. Ing., Ph.D.
The project is focused on the improvement of methods for testing analog circuits. It is possible, by means of suitably chosen test points, to identify a circuit component that is faulty of its value is out of specifications. The theoretical part of the project includes the research into methods for the optimum choice of test points and the research into methods for identification of the faulty element with the help of symbolic analysis. The work may include practical design of software for verification of designed methods. Prospective applicant should demonstrate interest in analog circuits and computer simulation methods.
The aim of the project is area of pasive and active circuits, which allow changes to signal transmission in the position of feeding network, for example phasing circuits, tunable filter circuits etc. Proposed structure should be modeled theoretically and verified by realization targeted on perspective bands of centimeter and milimeter waves. Aplication of the circuits should be targeted to inteligent antenna systems, which will allow reconfigurablility during operation.
Project is focused into the area of detailed modeling of the nonlinear and parasitic properties of the subsystems dedicated for radio-frequency signal processing. By using derived mathematical models and new numerical algorithms areas of the chaotic behavior in the hyperspace of the internal system parameters will be localized. These dynamical systems will be considered both as autonomous as well as driven in order to generalize approaches to full scale of analog functional blocks of the radio-frequency channel.
Tutor: Petržela Jiří, doc. Ing., Ph.D.
The project is focused on the research of the novel low-profile antenna concepts for the band of millimeter waves. The attention of the project should be concentrated on the development of novel technologies and exploitation of novel materials for antenna design. Further attention should be focused on circuits connected to an antenna. Proposed antenna concepts should find application in directional radio links for selected frequency bands.
Tutor: Láčík Jaroslav, doc. Ing., Ph.D.
The importance of the so-called Machine Type Communication and Machine to Machine Communication in the area of mobile communication networks has been rising recently. Such type of traffic is characterized by high network capacity requirement, i.e. the possibility to serve a high number of terminals at the same time. The essence of this project is proposal of approaches suitable for increasing the network capacity, e.g. modification of access techniques, scheduling, etc. Verification of the proposed techniques in existing software simulation tools is assumed.
Tutor: Slanina Martin, doc. Ing., Ph.D.
The subject of this project is focused on research of methods and hardware systems for precise localization of wireless sensors in networks. The goal of the research is analysis of current methods and their optimization with application in millimeter bands (MMID), eventually sub-millimeter bands, using UWB signals. Topic of the project includes an effective cooperation of multi-sensor systems (proper protocols, Kalman filtering). Systems for precise positioning of robotic machines, personal localization in buildings, in-car detection of a driver, or accurate localization of RFID tags are objective applications of this research.
Doctoral thesis is focused on analysis of the modern and future wireless communication systems and their coexistence in a shared transmission channel. During the analysis, the systems like digital television broadcasting (eg. DVB-T/T2, NGH), standards for mobile communications (eg. GSM/UMTS/LTE), wireless communication systems (eg. ZigBee, BT, WiGig) etc., have to be taken into account. Prerequisite of the successful solution is definition of the statistical model of the transmission channel with variable parameters and then its verification including simulated coexistence with various wireless services. The aim of the work is not only the model of the transmission channel, but also a definition of the forward error correction scheme that is optimized for the verified and shared transmission channel model.
Although the concepts and technologies for future 5th generation (5G) mobile networks are not fixed yet, it can be expected that rather than a radical change in the architecture of network and radio access interface we can expect extension of the set of available radio interfaces with improved energy efficiency, support of new usage scenarios and cooperation of different wireless systems in providing the best possible connectivity in a given location. In such a heterogeneous environment the technical parameters of data link can vary significantly. The aim of the project is to investigate the possibilities of video transmission in such environment and to find and optimize those components, which have the largest impact on the quality of service.
The subject of this project is focused on research of sensor characteristics for precise measurement of altitude above terrain with different character. There is supposed an application of data fusion from a several independent sources: radar altimeter, laser measurement, ultrasonic altimeter, barometric altimeter, and GNSS receiver with inertial system using compassion with topographic map. The goal of this work is investigation of effective fusing algorithms (using extended Kalman filtering, neural networks) for precise determination of altitude above ground for low-altitude flying platform based on characterization of sensors and terrains with different textures.
This topic is focused o study of novel principles of electronic control in frame o internal architecture of active element. It extends possibilities of existing active elements such as: current conveyors, transconductors, current and voltage amplifiers, etc. These elements offer only one adjustable parameter in most cases. Main goals are identification of hitherto unpublished possibilities of control in frame of one or simple combination of several basic sub-blocks. Investigation of this active device will be provided by ideal models, behavioral models (emulators) based on commercially available devices and their realization in suitable CMOS technology. Verification of usability of these active elements in suitable applications is also supposed.
The project is oriented to the cryptographic technologies, such as secured communication, electronic archive. In this domain, the research will be focused on the long-term electronic documents archiving, with 100% safety against the unauthorised access. The goal of the project will be in algorithm evaluation and verification on PC, GPU, FPGA, and/or ARM. Besides, the manycore platforms and the supercomputer Anselm in Ostrava will be used.
Tutor: Frýza Tomáš, doc. Ing., Ph.D.
The object of this research project consists in developing new methods and techniques for the optical wireless links based on the implementation of fiber elements into the communication terminal. The aim of the project is to analyze atmospheric phenomena and an improvement of reliability of the link working in an unsteady and non-homogeneous atmosphere. The optimal wavelength of carrier regarding eye safety and atmospheric effects will be studied.
Tutor: Wilfert Otakar, prof. Ing., CSc.
Research on resistance of the optical link working with different optical beams against turbulent atmosphere is the project aim. Development and examination of the method for measuring of the coherence and polarization of the optical beams that are intended for communication in conditions of turbulent atmosphere is a part of the project. It will be necessary to make up a program using the method of Fourier optics and matrix optics for the optical beams simulation, their addition and their propagation.
The aim of the project is a study of actual signals from experimental satellites and its influence on localization. Measurement with multiple of SDR receivers will follow to get experimental data for localization implementation. The research then will be targeted to optimal solutions for high precision, resolution and other parameters of realized system.
In terms of project it is necessary study possibilities of perspective LTE system with a view to his physical layer. After creation of physical layer model in MATLAB programme it is necessary to search influence of radio environment (C/N, C/I ratio etc.) on transmission quality (BER) by the simulation. Attention must be concentrated on investigation of coexistence between LTE system and other systems working in same or near frequency bands. The aim of this work is determine recommendation for operation of the system and network, to be quality of transmission was the best.
Tutor: Hanus Stanislav, prof. Ing., CSc.
The study is concentrated on physical layer simulation of MIMO systems. Attention must be located on investigation of influence corelation parameters of particular transmission connection on total signal rate of a given system and bit error rate. After creation of physical layer model of MIMO system (for example 802.11n or LTE) in MATLAB programme, the simulation of transfer signals for different conditions must be realized. The system model must be verified by measurement of the real system.
The project is focused on the numerical design, modeling, optimization, implementation and experimental characterization of antenna structures for the operation in 60 GHz ISM band. The research comprises both feeding structures (planar lenses of Rothman type) and antenna elements (horns and slots based of substrate-integrated waveguides). The described research is a part of an international project IC 1102 VISTA (Versatile, Integrated, and Signal-aware Technologies for Antennas). Implementation and measurements of designed antenna structures is a part of the cooperation with VTT Helsinki.
Reception of spacecraft signals is characterized by very low Eb/N0 ratio. That is mostly concerned with phase shift keying of a carrier or sub-carrier. Reduced bandwidth is applied for AWGN elimination as the spacecraft distance increases. For this reason very high frequency stability has to be achieved by locking to an atomic frequency standard. Basic requirement is a low value of equivalent system’s noise temperature achievement, related to optimized radiated pattern of the parabolic reflector feed. A part of the project is also methodology of the system sensitivity measurement by means of extraterrestrial noise sources.
The project is focused on the research of reconfigurable antennas for future generations of mobile networks which are capable of adaptation on current network demands and environment conditions. The main attention should be concentrated on the research of original radiators and ways of controlling their properties. The radiators should be exploited for novel beam steerable antenna concepts with multi-polarizing ability and selectivity in operating frequency.
Reliable methods of people and objects localization are used in many applications such as the monitoring of the people movement in buildings, vehicle position in urban areas, or car localization in a parking lot. These technologies require the use of complex algorithms for processing of signals transmitted through a non-stationary broadband channel with strong interference and attenuation. The project is aimed at the research of robust algorithms for evaluation of the distance and position of the objects based in particular on the received signal strength, time of arrival and angle of arrival techniques. The proposed algorithms will be verified in a real conditions.
One of the ways reducing the cost and consumption of cars, aircrafts, and other transport vehicles is the replacement of expensive and relatively heavy wiring harness interconnecting tens to hundreds of sensors and actuators with control unit using wireless network. Multipath propagation of signals in a noisy environment and coordination of a mutual communication, however, requires the use of special techniques and signal processing algorithms. The aim of the project is design and optimization of the multi-hop sensor network. The appropriate modulation, methods of equalization and error correction, etc. on the physical layer and methods of communication resources allocation and coordination of data transfer at higher layers will be investigated.
Prospective subject is oriented towards the signal processing algorithms in cooperative radio communications. The aim is to design an optimal algorithm for distributed solving of selected problem in the system of local/sensor networks. In such a case, the individual network components solve a part of the problem and communicate with the neighbouring components without the need for a centralized control. As the potential application a decentralized radio resource allocation (parts of the spectrum) to the individual network nodes or decentralized authentication of RF devices can be mentioned. The project is suitable for motivated student with the real interests in modern signal processing theory.
At present, wireless communication systems solution is mostly based on digital signal processing. Software Defined Radio makes use of universal programmed hardware for near to optimal signal processing. Goal of this project is search and evaluation such algorithms for receiving part of the satellite communication systems ground segment
In present-day communication systems (such as digital television), the error control coding of the transmitted data is often applied independently of the source coding: parity is added to the source-coded digital signal, resulting in fixed correction capacity related to the code rate. For digital video signals such a scheme provides unchanged picture quality up to the point of exceeding the capacity of the code, where the quality drops rapidly. The aim of this project is to explore the usability of Unequal Error Protection (UEP) and Joint Source-Channel Coding (JSCC) techniques in the area of new broadcasting services (e.g., DVB-NGH) and propose optimal setup of these coding schemes for real transmission conditions. The proposed techniques should allow for graceful degradation of visual quality in degrading reception conditions, increasing the universality of systems under consideration.
This work is focused on study of utilization of special active elements and blocks in the designs of digital modulators and demodulators (for example: frequency hopping, phase shift keying, pulse width modulation, etc.). Design of final applications supposes proposals of own network solutions of electronically controllable oscillators and generators of signals with specific output waveforms. One goal of this work consists in specification of parameters of active elements and blocks required for their utilization in such applications. Theoretical hypotheses will be verified by computer simulations and by experiments with commercially available elements (behavioral emulator), or eventually by simulations and realization of proposed systems in available CMOS technology (AMIS 0.35 um, TSMC 0.18 um).
The subject of this project is focused on research of high precise distance measurement and positioning of objects using radio-communication systems in centimeter and millimeter bands. The goal of this work is oriented to effective methods and reliable systems for precision measurement of distances or positions of objects based on deterministic signals or standardized radio-communication signals with accuracy up to centimeters. Achievement of such required accuracy needs an application of UWB systems and channel modeling for various scenarios.
Millimeter Wave transmission has become an important candidate for 5G communications as it offers a very high bandwidth. It is typically operated in frequency bands from 19-60GHz. Given first channel measurements the task is to design optimal transceiver techniques for this new field of communications. Co-directed by Dr. Stefan Schwarz.
The project is oriented to the graphics and video processing on high performance systems, such as picture reconstruction, compression, segmentation, traffic surveillance. In this domain, the general purpose and graphical processors are commonly used. Besides, the manycore platforms and the supercomputer Anselm in Ostrava will be used. The goal of the project will be in algorithm evaluation and implementation to PC, GPU and/or FPGA.
The aim of the project is the study of operation theory and proposition of new solutions for wideband microwave vector measurement system with the main orientation to the sixport measurement methods. Actual used systems are dedicated to lower microwave frequencies and from technological point of view they are not applicable to higher frequencies. Research of the necessary calibration sets and basic function methods is also included in the project. Also the study of parameter details of measurement systems and modeling of their behavior with the changes in environment, long term stability etc. will be contained in the research project.