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FEKTAbbreviation: PK-ESTAcad. year: 2008/2009
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. Jiří Svačina, CSc.
Issued topics of Doctoral Study Program
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.
Supervisor: Kasal Miroslav, prof. Ing., CSc.
Recent development in the area of optical transmissions through the atmosphere leads predominantly to the continuous increase in the transfer rates of the systems based on OOK (On-Off Keying), but also to the introduction of new technologies such as RoFSO (Radio over Free Space Optics), which utilizes OFDM technology. The goal of the project is the optimization of the optical receiver with the aim to achieve the best possible parameters of the above systems (transmission range, transfer rate, error rate, distortion, etc.). Theoretical part of the project is focused to the design of the proper conceptions of optical receivers and their models. The aim of the practical part consists in verification of the some theoretical presumptions by means of the simulation using created models or by means of the realized development samples.
Supervisor: Prokeš Aleš, prof. Ing., Ph.D.
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 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.
Supervisor: Kratochvíl Tomáš, prof. Ing., Ph.D.
The doctoral theme is focused on signal processing and transmission analysis of digital television for mobile terminals in DVB-H (Handheld) and DVB-SH (Satellite Handheld) standards. These standards deal with the reception characterized by the model of transmission channel with multipath reception and Doppler shift (i.e. "portable" and "mobile" reception). Prerequisite of the successful analysis is design of convenient simulation model of the transmission and digital modulation with optional parameters of each block and their software application (Matlab, Simulink). 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.
The doctoral theme is focused on signal processing and transmission analysis of digital television for DVB-S2 (already standard) and DVB-C2/T2 (standards technology proposals) transmissions. According to available information these standards and their proposals deal with the data capacity increase, N stage single- and multi-carriers modulations, MIMO systems, alternative way of channel equalization and signaling of transmission parameters and possibility of new services (HDTV, Video on Demand, interactive services etc.). Prerequisite of the successful analysis is design of simulation models of the transmission and digital modulations with optional parameters of each block and their software application (Matlab, Simulink). The aim of the work is comparison of second generation DVB standards performance parameters and their transmission characteristics with the first generation standards (DVB-S, DVB-C a DVB-T) and critical discussion of achieved results.
The substance of this thesis consists in developing new methods and technologies for atmospheric optical links that are based on multi-channels and multi-beams operation. The aim of this project is to increase availability of the link working in inhomogeneous and unsteady atmospheric transmission medium. In the frame of this project optimal wavelength of the carrier with respect to the atmospheric phenomena and eye safety should be investigate. The effort to search for photonics elements that replace electronics elements in the link transceivers will be devoted. The project is a part of the Department of Radio Electronics research activities.
Supervisor: Wilfert Otakar, prof. Ing., CSc.
The project is focused on the research of new structures of planar microwave circuits consisting of combination several microstrip, slotline, and/or co-planar transmission structures inclusive of their coupled geometry. The main interest will be oriented to directional couplers, power dividers/combiners, and microwave frequency filters including their potential 3-D configurations. The aim is to improve the electrical parameters of conventional types of such circuits and also to reduce their dimensions. The work includes theoretical study part, PC simulations, and experimental verification of designed circuits by practical measurement.
Supervisor: Svačina Jiří, prof. Ing., CSc.
The project is focused on the research into application of free space optical (FSO) links to the communication infrastructure. Standard application of FSO links consists in the replacement of metallic cables or optical fibres by a wireless link, which exhibits specific error properties and occasional interruptions of communication. Communications protocols have been designed for cable links, where these phenomena do not occur. In the first phase the research will be focused on modeling of FSO channel including practical measurements on real channel. The next phase will be focused on optimization of communication protocols and possible design of special network bridge for FSO. Prospective applicant should demonstrate creativity, independence and basic knowledge of network technologies.
Supervisor: Kolka Zdeněk, prof. Dr. Ing.
Description and testing of modern compression methods in domain of the video signal processing. Categorization of individual tools used in MPEG-4 standard and their effect on the output data stream. Modeling of the encoder and decoder partial blocks in Matlab environment and in C language, followed by the implementation on a digital signal processor or on FPGA. Examination of the arithmetical complexity of the individual blocks in the compression chain.
Supervisor: Frýza Tomáš, doc. Ing., Ph.D.
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.
Supervisor: 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.
Supervisor: Dřínovský Jiří, Ing., Ph.D.
A one-to-one map can be obtained using proper quantization of the 1-D map. The aim of the project is to find the class of the maps for this purpose, investigate haw to design integer-number maps with maximal-length sequences, in selected cases search statistical properties of the sequences and behavior of the binary sequences adhered to them.
Supervisor: Šebesta Vladimír, prof. Ing., CSc.
The Reliability of free space optics (FSO) systems is among others affected by using high power optical transmitters. However, their realization is difficult for the FSOs working at high data rates. The aim of the project is the analysis and comparison of the methods of high power optical signals generation maintaining required bandwidth. Theoretical part is focused to the investigation and comparison of the useable modulations and realization and optimization of laser driver models. The aim of practical part of project is the verification of theoretical presumptions by means of the simulation using created models or by means of the realized development samples.
The aim of the project is developing and testing of new algorithms for very reliable speech recognition. Developed recognizer should be used in medical systems which require extreme reliability more than 99%. On the other hand, the recognizer can be adapted to a small group of speakers and can recognize limited vocabulary only. Applied algorithms are based on DSP methods working in real time. Proposed project will be solved in cooperation with UAS Wiesbaden (Germany). German knowledge is essential for the project solution.
Supervisor: Sigmund Milan, prof. Ing., CSc.
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.
Formulation and practical validation of methodology of pre-compliance EMC tests oriented mainly to the EMC immunity tests of electronic equipment. Research of influnce of non-compliance of technical tests equipment, of test sites, and of test methods and steps on the correctness and accuracy of test results. Theoretical study, PC simulation and experimental verification.
The project is focused on the development and implementation 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. The goal is to use the minimum number of test points. The work may include practical design of a tester for verification of designed methods. Prospective applicant should demonstrate experience with electronic circuit design.
Reliability and availability of free space optics (FSO) systems are the limiting factors of FSO applicability. It is possible to increase them by the choice of the proper conception of mechanical, optical and electrical FSO parts. An important factor of the choice of proper conception is the wavelength of used light. It determines the influence of atmosphere and also technology used for realization of optoelectronic components and consequently available parameters of FSO electronic parts. The aim of the project is creation of FSO model (transmitter, receiver and transmission channel) comprising influence of weather, temperature, component technology, etc., and in optimization of FSO for maximum achievable reliability and availability. Theoretical part is focused to the investigation of influence of atmosphere and receiver and transmitter characteristics. The aim of practical part of project is the verification of theoretical presumptions by means of the simulation using created models.
The project is focused on the research of numerical methods in the time domain for modeling periodic structures of infinite size based on the Floquet's theorem and the periodic Green's function. Further attention of the project should be concentrated on modeling periodic structures of finite size. The emphasis will be put on the efficiency and stability of solution. Developed methods will be used for the analysis of frequency-selective surfaces and metamaterials.
Supervisor: Láčík Jaroslav, doc. Ing., Ph.D.
The project is focused to elaboration of modeling, simulation and implementation of high-speed digital systems in programmable devices, especially in FPGA devices. The emphasis is on research of methods for signal processing and in their implementation in FPGA devices. The work includes theoretical research, computer aided simulation and verification of results by implementation into suitable development platforms.
Supervisor: Kolouch Jaromír, doc. Ing., CSc.
Using of OFDM in Cooperative networks is often mentioned. Independently of it, a peak-to-average power ratio (PAPR), the unfavorable property of the OFDM, is studied and solved. The aim of the project is to analyze an influence of the PAPR to the performance of the selected cooperative networks and to recommend methods for improving the system quality.
The substance of this thesis consists in developing new methods of optical beam coherence degree assessment. The laser beams that are intended for transmission of information in turbulent atmosphere are supposed. Design of the multi-beams laser transmitter working with several beams that form resulting beam with flat characteristic is included to the project. Computer simulation of optical beams, their superposition and propagation in turbulent atmosphere will be required. The experimental verification of beams mutual interference is useful. The project is a part of the Department of Radio Electronics research activities.
Wireless networks are used for services without guaranteed data throughput and availability. Concepts of new technologies cover Quality of Service methodology and controlling and incremental implementation for older systems such as IEEE 802.11e standard is in progress. The project is devoted to proposal of the methodology of QoS measurement in wireless systems IEEE 802.11 and IEEE 802.16 and design of the algorithms for optimal radio resources scheduling for network entities (packet priority, packet scheduling).
Supervisor: Prokopec Jan, Ing., Ph.D.
Radio resources management is important for availability of service and area coverage in wireless networks. Standard for Mobile WiMAX IEEE 802.16e is designated for fast data transfers in mobile devices. Optimal allocation of the radio resources is crucial for best service availability and network throughput. The project is devoted to design of the algorithms for Radio Resources management in Mobile WiMAX network and its optimalization.
The work will be oriented towards the perspective communication systems (Adaptive OFDM, MC-CDMA, MB-OFDM etc.). The signal processing algorithms (reduction of PAPR etc.) used in various subsystems of communication chain and their effective (in term of complexity, power efficiency, chip area) implementations will be at the center of interests.
Supervisor: Maršálek Roman, prof. 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.
Description and analysis of existing software implementations of real microcontrollers in FPGA. Programming of these microcontrollers in higher languages. Implementation of microcontroller's architecture (for example AVR) in FPGA. Optimalization of implemented structure and its testing in terms of complexity, velocity, etc.
The project is focused on research of special planar microwave transmission structures by using the conformal mapping method. The research will be concerned to various microstrip, coplanar, and microcoplanar structures, symmetrical and bi-planar slotlines, 3-D microwave structures and their modifications. The goal is to create simple, but accurate enough analytical models of such structures for analytical computation their main parameters. The work may include theretical study part, as PC simulation and experimental verification of designed methods. Prospective applicant should demonstrate very good knowledge in higher mathematics, mainly in analytical computational methods..
The cognitive radio approach is supposed to be used in future communication systems. The cognitive transmitter performs the spectral analysis and in the case of free frequency band can allocate the channel reserved for other (primary) users. The aim of the dissertation is to propose new methods for spectrum sensing and received signal parameter estimation (primarily the type of modulation). The influence of environment like nonlinearity, multipath propagation and low power of detected signal have to be taken into the account.
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 on research of new methods of the target cross section measuring in optical spectral region. Design of the laser transmitter and the optical receiver for assessment of optical directional local characteristics of the surfaces is included to the project. Computer program for the data processing concerning local characteristics of the surfaces and total target cross section calculation will be required. The program should be developed with the aim to calculate the total target cross section in certain pointing of the laser beam with given parameters. The project is related to the laser radar problems and into Department of Radio Electronics research activities is included.
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. This problem is not fully studied and is a goal of this project.
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 behaviour with the changes in enviroment, long term stability etc. will be contained in the research project.