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Original title in Czech: Elektronika a sdělovací technikaFEKTAbbreviation: PK-ESTAcad. year: 2010/2011
Programme: Electrical Engineering and Communication
Length of Study: 4 years
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 aim of the project is in the solutions of amplifiers or multipliers in advanced classes E, F, G and other in the microwave band. These classes allow improving various parameters of standard circuits, such as efficiency, intermodulation level and others, depending on specific application. The change of parameters is done with the use of manipulation of harmonic frequencies of input signal. In the work it will be necessary to simulate those circuits, to realize selected designs and select proper methodology of measurements in the case of designed circuits.
Tutor: Urbanec Tomáš, Ing., Ph.D.
This work is focused on the analysis of high order modulation schemes and their applications in high-data rate mm-wave band radio relays. At the present time, the BPSK modulation schemes are generally used in 75/85 GHz radio relays. The aim of the work is to analyse features of the mm-wave radio relay channel. Consequently, the design of proper single-carrier HOM schmes with applications of coded modulations should be performed. Considering relatively high fluctuation of communication channel, the application of adaptive modulation techniques appears as an effective solution. Next to the channel characteristics the implications of non-ideal features of radio subsystems (IQ imbalances, nonlinearities of transmitting and receiving chains, characteristics of A/D and D/A converters, frequency fluctuations etc.) and modulation schemes optimization will be solved.
Tutor: Šebesta Jiří, doc. Ing., Ph.D.
This thesis is aimed on developing the procedures and functions which are suitable for advanced analysis of generally described nonlinear dynamical systems of arbitrary order. In detail, it is about a research focused on the new methods for metric dimension estimation of the state space attractors with respect to the short evaluation time and sufficient accuracy. The input data for this analysis can be system given by a set of the ordinary differential equations as well as signals in the time domain. The part of this work is studying the possibility to implement these algorithms on the problems of searching for specific solutions of a real physical systems by using stochastic optimization. These topics are actual and still unpublished. The basic knowledge of Matlab and Mathcad is the advantage for the interested persons.
Tutor: Petržela Jiří, doc. 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 bit error rate and availability of free space optics (FSO) systems are essentially affected by an atmospheric transmission channel characterized by the time variable dispersion, turbulence and absorption. Due to multipath propagation of the optical signal through the turbulent atmosphere the inter-symbol interferences occur. They influences can be effectively suppressed by using the advanced technologies based on OFDM. The aim of the project is investigation of the properties of turbulent medium and determination of proper conception of OFDM (optimal modulation of subcarriers in combination with feed forward error correction) resistant to the influence of the transmission channel.
Tutor: Prokeš Aleš, prof. Ing., Ph.D.
A present day high-speed wireless communication systems are based on optical and microwave frequency bands usage. Their reliability and availability are largely affected by atmospheric conditions (rain, snow fall and fog). Due to the difference of the wavelength used, the combination of both the systems offers very reliable communication tool, because more reliable transmission channel can be chosen according to the atmospheric conditions. The aim of the project is investigation and modeling of the transmission channel (modeling of turbulence, scattering on particles and absorption) in view of both the systems, determination of the link availability and transmission capacity of combined link and finding of algorithms for an optimal allocation of data flow. A number of measurements on real communication systems and statistical evaluation of measured data will be included in the project.
The doctoral theme is focused on analysis of SFN (Single Frequency Network) and MFN (Multi Frequency Network) broadcast networks parameters for digital television according to DVB-T/T2 standard. With the analysis is essential focus on coverage criteria of useful signal transmitters set and interference influence evaluation on signal coverage. Further analysis deals with time synchronization in networks, guard interval evaluation, according coverage evaluation and network design parameters optimization. The conditions of network design are results of regional conference RRC06. For the analysis is available commercial SW called "SFN Networks" (SW interface only in Czech) or self-created evaluation algorithms for radio signals propagation in terrain profile in limited area. The aim of the work is evaluation of the SFN and MFN networks parameters influence on required coverage and evaluation of the transmitters requirements for the same reason.
Tutor: Kratochvíl Tomáš, prof. Ing., Ph.D.
The aim of the project is to develop methods of analysis of transient phenomena on general interconnects of the kind of coupled multiconductor transmission lines by means of FDTD (Finite-Difference Time-Domain) methods. 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.
Nowadays, the substrate integrated waveguide (SIW) technology is a promising solution for the design of the millimeter-wave applications. This project is focused on the research of the antennas based on the SIW for the band of millimeter waves. The main attention of the project is concentrated on the original design radiators and their coupling with the SIW. Further attention should be focused on the transition between this waveguide and the standard transmission lines.
Tutor: Láčík Jaroslav, doc. Ing., Ph.D.
A topic of the thesis is focused on research of possibilities of Volterra series theory application, in conjunction with a multidimensional Laplace transform and an association variable technique, for purposes of the analysis of nonlinear electronic systems. In the framework of the project the circuits with both lumped and distributed parameters should be taken into account, including issues of analysis of transient phenomena on multiconductor transmission lines. As a part of the project the software implementation of the methods developed is expected, therefore interested persons are supposed to know techniques of programming (Matlab).
Proposed project deals with fast keyword search in audio documents. The aim of this project is to identify the topic of a talk by means of simple keywords or phrases given by the user. The searching process is analogous to the search in textual files. An efficient detection of spoken keywords embedded in recorded continuous speech is based on word recognition approaches.
Tutor: Sigmund Milan, prof. Ing., CSc.
The topic of doctoral study is focused to the communication domain, and mainly to effective low bit-rates data transfer. The aim of the study will be the description of function and properties of recently used communication protocols via wire buses or wireless communication at low bit-rates. The development, modeling and realization of proper protocol will be the project aim as well. Final part of doctoral study will be detailed testing of proposed protocol according to the bit rate, reliability, complexity and robustness against disturbance.
Tutor: Frýza Tomáš, doc. Ing., Ph.D.
Mechatronic systems represent a combination of electrical circuits, drives and mechanical components. At present the systems are usually simulated by means of an equivalent electrical circuit. The aim of the project is to transform methods of numerical and symbolical analysis originally developed for electrical circuits to other energetic domains, which would make the analysis more effective. Design of a new simulator is expected in the project. Prospective applicant should be familiar with programming.
Tutor: Kolka Zdeněk, prof. Dr. Ing.
Equipment and communication systems on board satellites and spacecraft work more frequently in autonomous modes that are controlled by internal algorithms for an action as well as for signal processing. At present, these tasks are well solved by FPGA. In space applications demands on high reliability with elimination of hazard states, high radiation resistivity, low energy consumption and minimum dimensions are needed to take into account. The project will be solved in cooperation with Institute of Atmospheric Physics AS CR.
The project is focused to design of the special antennas in RFID application in UHF and microwave frequency bands. Main arm of the project is focused to design of received tags, which is designed for application in non-standard conditions (high and low temperature, metal near the tags, etc). The tags were designed for multi-band application and then will a polarization factor investigated. The project deals with describing of recommendation of the design of these antennas, all theoretical results will be verified with measurements.
Tutor: Lukeš Zbyněk, Ing., Ph.D.
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 in realistic conditions will be created.
Description of testing possibilities used in domain of the digital circuits and structures development. The description could be focused to functional and physical structure reliability. Development of new automated system, which is capable to perform a detailed testing, according to the user requirements. Optimizing of testing tools with reference to the processing velocity. Analysis of restrictive influences with impact to reliable function of any digital system. These influences could be utilized for device construction, operating in extreme environment.
The project is focused on the study of diffraction phenomena in transmitted optical beams. The Fresnel diffraction of the elliptical Gaussian beam emerging in the optical transmitters will be studied. The diffraction phenomena make difficulties when adjusting the optical wireless link and negatively affect the acquisition-pointing-tracking subsystem of such a link. The goal of the project is to create a methodology for an optimal adjustment of the transmitter elements minimizing the diffraction effect. The theme includes a model of the transmitter involving both the diffraction effects and the lens aberration. The project is a part of the research at IREL in the frame of grant project GACR, No. 102/09/0550.
Tutor: Wilfert Otakar, prof. Ing., CSc.
The doctoral theme is focused on signal processing and transmission analysis of digital television in DVB-IPTV networks. DVB-IPTV deals with compressed video and audio and generic data in an MPEG-2 Transport Stream delivered over IP networks - both broadcast and on demand services. This also covers elements which facilitate the connection of an IPTV STB to an IP network. DVB project is finalizing the publication of DVB-IPTV v1.4, including support for Content Downloading and Retransmission as a means of recovering packet errors. The aim of the work is analysis and evaluation of the DVB-IPTV broadcasting parameters on achieved bit-error rate and quality of the transmission and digital TV and data services.
Project is focused to design of the short wavelength antennas, tuning of these antennas with mechanical equipment (changing inductive and capacitive attributes of the circuits) or with electronic circuits (PIN-diodes, capacity diodes - varicap). Antennas will be investigated form short-wave to microwave bands. In project was investigated a speed of tuning, accuracy of the tuning, power attributes of the circuits. The project deals with software and hardware design, measurements of efficiency of radiation, quality factor and impedance matching measurements. The theoretical designs will be manufactures and measured.
The project should be studying theoretically and practically oriented problems of the circuits in several working modes, namely classical voltage, novel current and hybrid ones. Suitable transformations between them (as an adjoint one) should be used to make the best employ of the known VM circuits in novel CM form with other functional blocks and better features. New design approaches and untraditional novel applications will be focused on active filters and other analogue circuits.
Tutor: Dostál Tomáš, prof. Ing., DrSc.
The project is focused on the analysis of three-phase (or multiphase) 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.
This work is focused on the research of hardware topology and optimization for high data rate rf demodulators destined for digital radio communications, above all for mm-wave band radio relay. The aim of the work is to analyze effective topologies of SDR demodulators with optimization of their features (acceptable energy efficiency, non-linearity limitation, high dynamic range, high dynamic range, broadband systems etc.). At the present time, many advanced topologies of RF demodulators intend on future high data rate wireless systems are developed (e.g. demodulators based on six-port architecture etc.). Crucial trends in this field are high bandwidth, high dynamic range, and high energy efficiency achieving. The fundamental problem in this field is the design of high-speed A/D converters.
This work is focused on the research of hardware topology and optimization for high data rate RF modulators destined for digital radio communications, above all for mm-wave band radio relay. The aim of the work is to analyze effective topologies of SDR modulators with optimization of their features (energy efficiency, non-linearity limitation, high dynamic range, broadband systems etc.). At the present time, many advanced topologies of modulators intend on future high data rate wireless systems are developed (switching modulators, phase-magnitude modulators, six-port systems etc.). Crucial trends in this field are high bandwidth and high energy efficiency achieving and the fundamental problem in this field is the design of high-speed D/A converters.
High speed data transmission implementation in the UMTS networks brings high speed data transfer in UMTS. HSPA+ standard introduce MIMO technology to 3G networks. The aim of the project is to model and simulate HSPA+ physical layer and measurement of data throughput in various fading situations. Simulation results will be compared to HSPA real network measurements.
Tutor: Prokopec Jan, Ing., Ph.D.
In order to make the numerical analysis of complicated and electrically large structures efficient, the analysis is more and more frequently performed in time domain (general time responses) or in spectral domain (spatial frequencies). Since conventional antenna parameters are defined in frequency domain (separate harmonic frequencies), attention is turned to the formulation of equivalent parameters in alternative domains. The project is aimed to the formulation of equivalent parameters, which can be used to perform the optimization directly in the domain of numerical analysis.
Tutor: Raida Zbyněk, prof. Dr. Ing.
The aim of the project is area of imaging systems, which use the vector network analyzer. The work deals with methods used in 2D up to 4D imaging systems, studies their features, restrictions and methods of their creations. In the practical part it will lead to realization of perspective system in laboratory and study of dealing with measured data will be done to produce the imaging solution. Practical use is directed to ground penetrating radar or microwave tomography.
The project is aimed at novel untraditional applications of the modern active device, as commercially available (OTA, CFA, analog multipliers etc.) and also specially made functional blocks (CC, VC, CDTA, CCTA etc.) respectively. These blocks enable new design approaches and untraditional novel applications, which will be focused specially on active filters, oscillators, modulators and other communication circuits.
The goal of fourth generation mobile network LTE Advanced standardization process is to develop high speed system with peak data rates up to 1 Gbps. There is new type of services, such as Device2Device communication, proposed in new standard. The aim of the project is to simulate LTE advanced physical layer with focus to Device2 Device communication.
The project is concentrated on the research of the methods for the material characterization in the microwave frequency band with the main attention on the millimeter wave band. The attention should be focused on the free space method. The influence of the environment, properties and the location of the measuring probe on the accuracy of the measurement should be investigated. In addition, issues of the measurement uncertainty should be discussed. The results of this project should be used in the field of the nondestructive testing of materials.
The project deal with study of measurement of S-parameters win microwave and millimeter bands in frequency range (ones to tenth gigahertz GHz). The project is focus research of theoretical possibilities of the measurements of reflection and pass of two-port network, effects of parasitic attributes of two-port network and compensation of these properties. Then the project is focused to calibration of the measurement. Main arms of the project are to theoretical possibilities of measurements; theoretical results were be verified by measurements of practical realizations.
The aim of this project is measuring of the coherence of optical beams that are intended for communication in conditions of turbulent atmosphere. The design of the laser transmitter working with several beams which form a "top hat" beam as a result is a part of the project. A program elaboration for the optical beams simulation, their addition and their propagation in the turbulent atmosphere will be needed. The experimental verification of mutual interference of the beams is requested. The project is a part of the research at IREL in the frame of grant project GACR, No. 102/09/0550.
The project is focused on new models of passive EMI filters based spread parameters. These spread parameters have to be optimized by new algorithms. The parameters of the filters for models and optimization will be taken from the measured data in common measuring systems. The modern optimization method should be necessary to use during the creation of filter models. The project has to have also the analysis of the worst-case performance analysis of tested filters.
The aim of the project is to investigate the possibility of multicarrier modulations application in mm-wave bands, for example the band 57-64MHz. The problems to solve include the radio transmission over channel, high signal peak to average power ratio, influence of nonideal RF components (IQ imbalances, amplifier nonlinearity, quantization in high-speed AD/DA converters etc.).
Tutor: Maršálek Roman, prof. Ing., Ph.D.
The project is focused on the research of multi-objective methods for the design of antennas operating at frequencies 40 GHz to 90 GHz. Attention should be turned to the correctness and effectiveness of the numerical model of the antenna, to the sensitivity analysis identifying proper state variables, to a suitable characterization of the antenna and to the proper formulation of partial objective functions. Pareto set of optimal solutions should be computed both by global methods and local ones. Attention should be turned to the parallel implementation of the optimization process.
The object of this research project consists in developing new methods and techniques for free space optical links based on the implementation of fiber elements into the communication terminal. The aim of the project is 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. The project is connected with research at IREL in the frame of grant project GACR, No. 102/09/0550.
LTE mobile networks are evolution step of third generation networks. LTE is based on different physical layer technology than UMTS. Access method change provides effective transmission and LTE networks come up to very high bit rates, up to 100 Mbps. Algorithms for radio resources allocation and management are required for individual user. The aim of the project is to simulate and optimize algorithm for LTE radio resources management.
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. In this connection there is an interesting problem of instrumental phase noise influence. The goal of this project is to find models of real systems and their experimental verification.
Proposed project is oriented to recognition of speakers and their internal states using speech signal analysis. The aim of this project is development and testing of special algorithms for investigation of emotional as well as mental speaker states which negative affect the activity and behaviour of persons such as fatigue, stress, depression, etc. Development of algorithms will be based on robust DSP methods. In addition, some specific databases in realistic conditions will be created.
The doctoral theme is focused on techniques of 3D TV presentation such as stereoscopic capture, multi-view capture, 2D plus depth and a 3D display. A special viewing devices are needed to project a television program into a realistic 3D field. Stereoscopy is most widely accepted method for capturing and delivering 3D video. It involves capturing stereo pairs in a two-view setup with cameras mounted side by side and separated by the same distance as between a person's pupils. Projection of the object point in a scene along the line-of-sight to a flat background screen can be used for location of this point mathematically using simple algebra. The aim of the work is to define possible implemtation for capture, processing and reproduction of 3D TV in relation with relevant international works in 3D TV area.
The project is focused on problems of multiple secondary radars signals reception. After the state of the art analyze and acquiring of models for secondary radar reception, the testing of single channel methods for signal reconstructions according of present standard is assumed and optimization or improvement of present methods is considered. Moreover the proposal of new multiple channel methods of signal separation primary adapted for secondary radars reception is assumed. The algorithms may be implemented in FPGA.
Tutor: Fedra Zbyněk, Ing., Ph.D.
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.
Project falls into the area of the computer processing of the static pictures. It is focused on the analyse of the attainable technical parameters (accuracy of measurement especially) of the stereo-photogrammetric systems and their optimizing. Analyse and development of the functional and practically usable system for determination of the 3D coordinates of the arbitrary point in the scanned scene (inclusive useful software) are the main aims of this project.
Tutor: Říčný Václav, prof. Ing., CSc.
The project belongs to the basic research of the modern analogue circuits and filters. Switched capacitor circuits have been studying in our faculty for long time. Switched current circuits are relatively new and not so developed. These problems ask to continue with the development of the methods for the analysis and the synthesis of these circuits. Furthermore CAD modeling, computer simulation and studying real and parasitic parameters are also required. Novel applications, should be focused specially on active filters, oscillators and other analogue circuits.
The project is focused in developing novel numerical techniques for evaluation of inverse Laplace transforms of functions of single and multiple variables, being accurate and fast enough for purposes of computer simulation in electrical engineering. The methods are still sought after on a world-wide scale, not only in the electrical engineering, but also in another fields of science where systems of ordinary or partial linear differential equations are solved. Multidimensional inverse Laplace transforms, in conjunction with Volterra series theory, can also be used for weakly nonlinear systems solution. As a part of the project, searching effective programme algorithms is also required, therefore knowledge of programming is needed at interested persons (Matlab).
The aim of the project is to elaborate nontraditional methods of sensitivity computation in linear and nonlinear hybrid systems containing elements with both lumped and distributed parameters. The distributed parts are formed by lossy multiconductor transmission lines, nonuniform in general. The techniques developed will be utilized for the purposes of interconnects optimization in mixed analog-digital systems. The methods proposed should be more accurate, faster and more generally applicable compared to the ones available in a literature.
The project is focused on analyses of characteristics of radar signals and design and optimization of methods on radar signals recognition. After the study of characteristics of different radar types their configurations, the model for recognition algorithms testing will be developed. The use of methods like Gaussian mixture models and Markov models is assumed, new algorithms design and testing on radar data is planned.
The project is focused on the development of special approaches to be used for the time-domain finite-element analysis of novel classes of electromagnetic problems. Attention should be turned to the development of specific perfectly matched layers to analyze open structures, to the novel adaptive schemes of time sampling to analyze time responses containing peaks, to macro-models for structures consisting of repeating details, etc.
The project is focused on the design and implementation of wideband antennas operating at frequencies up to 110 GHz. Frequency multiplication and detection of received signals is a part of the project because the existing equipment of the laboratory covers frequencies up to 40 GHz only.
There is nowadays huge activity in the area of cogntive radio with dynamic spectrum allocation. The first standard based on this principle is 802.22. The aim of the dissertation is to model the physical layer of cognitive wireless networks and deeply analyze the possible security threats. The possibility of perspective frequency bands usage will be also investigated.