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Original title in Czech: TeleinformatikaFEKTAbbreviation: PP-TLIAcad. year: 2009/2010
Programme: Electrical Engineering and Communication
Length of Study: 4 years
Profile
The aim of the studies is to prepare top-class scientific personalities that will be able to provide solution to challenging problems of science and technology in the field of information technologies in telecommunications. Another aim is to teach graduates the methods of scientific work, to make their knowledge of higher mathematics and physics more profound, and to furnish students with theoretical, experimental and practical knowledge from the field of teleinformatics.
Key learning outcomes
Graduates of doctoral studies in the field of teleinformatics are fit to work as scientific and research workers in the development, design and operation departments of research and development institutes, and telecommunications companies, where they can make full creative use of their knowledge and skills. The graduate is capable of solving independently sophisticated problems of science and technology in the field of teleinformatics. In view of the scope of his theoretical education the graduate is capable of adapting to practice requirements in both fundamental and applied research.
Occupational profiles of graduates with examples
This field of study focuses on the science education of doctoral students with profound theoretical foundations in converging communication and in formation technologies. The main part of the study includes course in theoretical informatics and telecommunication technology. In the area of teleinformatics the student has much knowledge of communication and information technologies, data transmissions and their security, inclusive of using and designing the related software. He is well versed in operating systems, computer languages, database systems, distributed applications and the like. He can cope with the algorithmization of tasks on a high level and can propose new technological solutions of telecommunication devices, information systems and support services.
Guarantor
prof. Ing. Zdeněk Smékal, CSc.
Issued topics of Doctoral Study Program
Telematic systems are particularly common in transport. Research into telematic systems based on the Internet protocol will be focused on the design of sophisticated, i.e. well-considered, formally well-developed and complicated methods that use IP systems in various areas. Surveillance and protection systems, systems of paying the fare, information systems and interactive applications, etc. are supposed in particular. Localization by GPS, vehicle diagnostics, and vehicle monitoring on ortho-maps in real situations are in the focus. Sophisticated telematic systems will be software simulated, optimized and subsequently hardware realized in the form of functional specimens.
Tutor: Škorpil Vladislav, doc. Ing., CSc.
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Tutor: Molnár Karol, doc. Ing., Ph.D.
Advanced design of converged systems represents research, simulation and hardware implementation of selected questions of a fast developing converged platform of classical communication and progressive data services on the basis of Internet protocol. The main stress will be on the Quality of Service (QoS) in the realization of telephone and video-telephone connections. New communication protocols in integrated networks will be designed and tested, together with the connection of IP networks to other types of network, and research into new algorithms for high-quality, effective and safe transport of information in converged networks.
Because of its reliability, TCP is by far the most expanded transport protocol in current IP networks. In addition, there is a wide range of extensions to improve the efficiency of the TCP protocol. The aim o the Ph.D. work is to design and evaluate a global QoS policing method which will utilize these TCP features to regulate transmission parameters, especially the transmission speed, of TCP connections. This transport layer QoS control method should be able to deal with several TCP connections simultaneously, realize address- or service-based classification and regulate the speed of the identified TCP connections according to the given absolute or relative transmission rates. This regulation should be done by introducing synthetic delay or losses to the incoming TCP flows. The assumed number of QoS control rules is not more than 20. The control method should be evaluated in a suitable simulation environment. It is not necessary but OPNET Modeler is recommended for this purpose.
Research of universal and complex autentification and authorization for permanent and mobile computer networks
Tutor: Zeman Václav, doc. Ing., Ph.D.
The thesis will be focused on analyses of speech signal with wrong pronunciation and on automatic detection of wrong pronunciation in speech. An analysis of particular pronunciation defects and their influence on speech parameters will be part of the work.
Tutor: Sysel Petr, doc. Ing., Ph.D.
The goal of the phd task is to design a system for optimization of the network traffic in an existing autonomous network and/or to design a new optimal network topology for supposed volume of network traffic, for supposed composition of particular kinds of traffic and for required level of reliability. Designed algorithms and/or system should enable making statistics and evaluations or proposals for network structure improvements.
Tutor: Novotný Vít, doc. Ing., Ph.D.
Blind Audio Source Separation
Tutor: Smékal Zdeněk, prof. Ing., CSc.
The work is focused on the design of A/D and D/A converters working in the current mode. The aim is to design a suitable structure of number-current and current-number converters without internal current-voltage and voltage-current conversions with respect to enhancing the bandwidth in comparison with converters working in the voltage mode. Part of the work is also the design and analysis of current-mode antialiasing filters. The design will start from unconventional circuit element structures such as current conveyors (CCI, CCII, CCIII) with simple or floating output, current feedback amplifiers (CFA) or transconductance amplifiers (OTA, BOTA). Requirements to be met by the candidate: the knowledge of circuit theory and simulation programs (MicroCap, PSpice).
Tutor: Lattenberg Ivo, doc. Ing., Ph.D.
The theme is focused on analysis of modern trends of spatial imaging and on its data acquisition. The goal is to study perspective technologies of 3D imaging and to do a research in the area of source data acquisition containing spatial information, i.e. a number of images (eventually video sequences) acquired from different perspectives. The research should be pointed to design a new method of acquisition for multi-view imaging, which means namely a new method of disparity map determination.
Tutor: Rajmic Pavel, prof. Mgr., Ph.D.
The work is focused on the feature analysis of current-mode electronic frequency filters. The aim is to design algoritmizable methods that lead to finding features of filters generally defined by the schematic. It will be necessary to evaluate the available feature ranges, e.g. quality, pass-band current transfer, dynamic range within a defined supply voltage, sensitivity, etc. In the case of finding the quality range, the point is to find the extremes of a multi-variable non-linear function. Mathematical tools (e.g. Maple or MathCAD) will first be used for this purpose; afterwards the algorithm itself will be designed. Requirements to be met by the candidate: algorithm thinking, the knowledge of computer programming and circuit theory.
The work will be focused on analysis, optimization and design of forward error correction in wired and wireless transmission systems, using MultiTone modulation (DMT), Orthogonal Frequency Division Multiplexing (OFDM) and Filtered MultiTone modulation (FMT). The goal will be mainly to utilize new FEC codes and approaches. Today the CRC code and the RS-code with interleaving are often used. Based on this groundwork the new approaches to solving these systems will be introduced. Individual approaches will be tested in simulations and practical realizations.
Tutor: Šilhavý Pavel, doc. Ing., Ph.D.
Topic of the theses deals with problems of coexistence of Femtocell technology with standard UMTS network implementations. The goal is to learn the problems of mutual influence of both technologies in detail, to address problems with handovers of mobile terminal connections both between two Femtocells and between Femtocell and standard UMTS cell, and to mathematically express the problems, to make simulations and to design an optimum solution regarding service quality support for such services as "Voice over IP", "Video over IP", instant messaging, data transfer, etc.
Kompatibilita metod pro zajištění kvality služeb
The work will be focused on the research into critical parameters of optical fibers which appear to be a limiting element for applications of new technologies such as WDM, CWDM, DWDM optical fiber networks. The following issues will be analyzed - PMD influence, insertion losses, back reflections, chromatic dispersion, four-wave mixing/blending and interferenc in an optical network model that will contain wavelength multiplexers, optical switches and optical amplifiers. The task of the work is to find a solution how to reduce these negative transmission effects.
Tutor: Filka Miloslav, prof. Ing., CSc.
The aim of the work is the research into and design of new linear analog circuits (frequency filters, oscillators, amplifiers) operating with current or mixed signals. Existing design methods will be used, such as the method of autonomous circuit, synthetic elements with higher-order immittance, and also new design procedures will be sought. Current followers, current operational amplifiers or voltage and current conveyors will be utilized in the circuits designed. The purpose will be to achieve the frequency of signal processed as high as possible.
Tutor: Kubánek David, doc. Ing., Ph.D.
Position estimation of IP network nodes becomes popular nowadays. Its main use is in large-scale applications such as peer-to-peer networks. The algorithms used for network nodes localization are commonly based on artificial coordinate systems. However, current measurements show that these artificial coordinate systems can be also used for geographical position estimation. The research will deal with finding a solution for geographical position estimation of IP nodes when both access and backbone networks are involved. Real and experimental IP networks will be used for this purpose (e.g. PlanetLab). Further information about this topic can be found at http://adela.utko.feec.vutbr.cz/projects/.
Tutor: Komosný Dan, prof. Ing., Ph.D.
Wireless sensor network technology becomes very popular, mainly in conjunction with environmental monitoring such as water quality, land-slides, wildfires, water floods etc. However, information about these events is worthless without knowing the position of the sensor nodes. The research will deal with the investigation of the localization algorithms that are used for the estimation of sensor nodes position. The currently known and the proposed algorithms will be mathematically described and their efficiency will be investigated using simulation models in a real wireless sensor network. Further information about this topic can be found at http://adela.utko.feec.vutbr.cz/projects/.
Evolution of the modern spatial sound systems leads recently from the horizontal configurations of loudspeaker arrays, e.g. well-known Surround Sound, up to so-called with-height reproduction and 3D loudspeakers arrays. New standards are prepared for multichannel audio reproduction in this area as well. The thesis will be focused on research of algorithms of digital audio signal processing for localization and rendering of sound sources in 3D acoustic field, change of distance and apparent source width, spaciousness of a sound field, etc. Modern high-order ambisonic, vector-base panning, and wave-field synthesis methods will be examined.
Tutor: Schimmel Jiří, doc. Ing., Ph.D.
In order to secure wireless networks, let us assume the IEEE 802.11 standards of WiFi networks with focus on currently used protection mechanisms of cryptography and authentication. Weak points of the protection under consideration and principles of particular attacks with determined weak points in the protection protocols will be analysed. A more effective protection of wireless networks in the IEEE 802.11 standard will be designed and tested on the basis of the knowledge obtained. Attention will be paid to the quality of service QoS in wireless networks. Features of data sensitive to delay will be examined and simulated using a suitable program (Opnet Modeler). Considered will be IP telephones, transmission of video, voice and multimedia in general. The provision of QoS will be optimized.
Naprostá většina současných mechanismů pro zajištění kvality služeb přebírá požadavky aplikace či expertní znalosti jiného subjektu a na základě těchto informací se snaží co nejlépe vyhovět definovaným požadavkům. Možnosti zpětného ověření skutečně zajištěných přenosových parametrů jsou však často velice omezené případně i nemožné. Cílem disertační práce je navrhnout a ověřit měřicí metodiku, která dokáže spolehlivě zkontrolovat aktuální přenosové parametry síťového prostředí pro různé typy služeb a tím umožní vyhodnotit vhodnost či nevhodnost využívaného mechanismu zajištění kvality služeb pro provozování dané síťové služby. Návrh metodiky vyžaduje podrobnou analýzu mechanismů zajištění kvality služeb využívaných na úrovni linkové, síťové a transportní vrstvy referenčního modelu síťové komunikace a dále také přenosových požadavků typických síťových služeb. Správné chování navrženého modelu bude nutné ověřit v simulačním prostředí, příp. i v reálných podmínkách.
Mobile access network is a part of the mobile network that is the most critical part of the network as the transmission capacity is concerned and therefore the access network resources have to be used efficiently. The topic is focused on research in the areas that have an influence on efficiency of network resources utilization like load balancing techniques in cell systems, multiplexing and modulation techniques resistant to multipath signal propagation, minimization of signalling messages, etc.
The principle of time and frequency warping are known for quite long time and they are already used in a speech processing algorithms. However, the research in this area is recently focused on audio signals generally, namely on using of warping audio signals in the audio effects. The thesis will be focused on research of algorithms of the real-time time and frequency warping audio signals, their evaluation in respect of the audio signal quality degradation, and their implementation in the modern digital signal processing systems in desktop computers and modern signal processors.
The doctoral thesis will be concerned with developing methods for NMR image processing in which, for example, the mean intensity value depends on location/position (distortion of image brightness). Design of digital filtering method based on the wavelet transform, filter banks or some other techniques. Image segmentation can be used to enhance the objects of interest in the image.
Tutor: Gescheidtová Eva, prof. Ing., CSc.
Tutor: Bartušek Karel, prof. Ing., DrSc.
The work will be focused on research into softswitch incorporation into converged NGN networks. One of the goals will to link softswitches with the existing SS7 TDM network through the IP network. The goal will be to design, implement and test the protocol solution. Based on this groundwork the new approaches to solving these signalling systems will be introduced. Individual approaches will be tested in practical realizations.
The thesis is mainly focused on new methods of non-invasive blood pressure mesurement. All blood pressure monitors presently used are equiped with pneumatic cuff, which is uncomfortable for patients during long time measurement. Objectiv of the thesis is to find new methods that not only improve patients' comfort but also increase a yield of the measurement (e.g.
The work is aimed at the research into and design of new types of non-linear analog circuits operating with current or mixed signals. The dual circuits to the well-known non-linear voltage-mode circuits are concerned, such as precise rectifiers, diode function generators or logarithmic amplifiers. The purpose will be to remove the negative properties of these circuits, which are caused by voltage active elements. Current followers, current operational amplifiers or voltage and current conveyors will be utilized in the circuits designed.
The objective of the thesis is to optimize the structure, distribution and coherence of distributed processes in terms of time and space complexity. The results in this area will accelerate a processing period, which can be practically applied to a wide range of problems, e.g. optimization of some computational tasks, optimization of data transmission and process management optimization. The optimization problem falls within the complexity class NP-hard and current methods are not able to solve the problem with required accuracy in an acceptable period of time. Evolutionary methods such as genetic programming, genetic algorithms show that in many cases that they can provide very promising results at a reasonable unit of time. The proposed algorithms and data structures will be necessary to formally describe, validate and verify in a simulation environment.
Tutor: Vrba Kamil, prof. Ing., CSc.
The application of evolutional methods presents a non-traditional possibility for the design of network elements. In the first place, a detailed analysis of the application of evolutional algorithms and methods is supposed. The research will be focused on the design of a complex architecture of communication systems and, at the same time, on optimal design of individual network elements. The evolutional algorithms represent a group of stochastic calculation methods, which are inspired by the processes in live nature. These methods are suitable to be applied to problems, which are hard to solve by only classical deterministic mathematical methods or where the application of exact computation methods requires a disproportionate simplification of the task. The assumed evolutional methods are, above all, the grammatical evolution and the differential evolution. An original evolutional simulation environment will be designed in the Visual C++ object programming language for testing selected evolutional algorithms and their combinations. Visual C++ enables a flexible modification of the object structure of the simulation environment by means of newly designed algorithms. Experiments in the simulation environment designed enable performing a complex analysis of the results achieved, with relevant conclusions for the given application areas.
The aim of the study is to apply artificial neural networks in the area of optimizing the routing and switching principles. The architecture of network element will be designed. It will contain an artificial neural network for optimizing the priority switching. An original procedure will be proposed for modelling this problematic mathematically and also for implementing the mathematical model. The software simulation of a system that can be used to control the switching field designed for switching data units shall be extended with hardware implementation, e.g. via programmable logic fields. The knowledge obtained will be generalized and related to theory of high-speed network elements and to theory of neural networks. The MATLAB program and the Visual C++ language in particular are expected to be used in software simulation. Simulation environment in the JAVA language should to be designed for the verification of the mathematical relations derived.
Modern image compression algorithms based on wavelet transform are very efective. If a large-scale image is to be processed (e.g. a medical image), then it could turn out as inefective to perform the transform and the coding for the whole image at once. On the contrary, the known attempts like JPEG2000, SPIHT and EZW allow in such situations to divide the image to neighbouring segments, which are processed independently. The goal of the study is to develop algorithm for parallel processing of these segments on multiple cores/processors/computers, and also to modify the state-of-the-art methods so that the typical block artefacts would not appear at the borders of the segments.
Person Analysis and Recognition based on Voice Imprint
The work will analyze a brand-new type of optical fibers used for transmissions. These fibers work on different principles of transmission compared to typical optical fibers The. assignment in this work will be deeper theoretical study of transmission principles of various types of fibers (LMA PCF, HN PCF, Polarization Maintainig PCF, etc.) as well as an application design of these fibers and options of their use in optical networks.
Cílem je výzkum nových zapojení kmitočtových filtrů s novými aktivními obvodovými prvky, jako např. zesilující proudové konvejory, diferenční proudové zesilovače atd. K hledání nových zapojení bude využito víceprocesorové výpočetní stanice HP. Je požadována znalost programování v jazyce MATLAB.
Tutor: Balík Miroslav, Ing., Ph.D.
The personal authentication device would be a universal mobile device on the basis of mobile telephone or a handheld, which should allow secure authentication of persons in all sorts of application such as payment in shop, sign-on in computer network, proof of identity, etc. The goal of thesis is to design the security conception of this device.
Tutor: Burda Karel, doc. Ing., CSc.
The first step will be studying the model of human perception of acoustic signals and the creation of psychoacoustic model of human hearing. The purpose is to identify and describe the components of the signal that human really notice and that contrary are irrelevant for the perception of humans. Based on this model a new or modified existing method of speech enhancement from noise will be within the thesis.
The thesis will be concerned with the study of structure and transport of ions in plant structures using nuclear magnetic resonance tomography. MR measurement techniques and MR images contrast will be optimized.
The thesis will be concerned with the study of the influence of electromagnetic fields on metabolic processes in cells of biological tissues. The research will be based on cooperation with medical specialists in oncology. The influence of electric, magnetic, and electromagnetic fields of different spectral characters and spatial distributions will be tested.
At the period of convergence of network technologies, integration of communication services, miniaturization of terminal nodes while their performance is increasing and more network interfaces are available, the majority of terminals are multifunctional. The thesis topic is a solution of support for demands of variety of services provided by terminals especially as the terminal resource allocation is concerned (processor time, memory allocation, peripheries access) and also as the most suitable access network is selected (network interface).
Cílem prací je na základě studia řešení symetrických pasivních kmitočtových filtrů a zapojení filtrů s operačními zesilovači se symetrickým výstupem, nalézt nová zapojení takovýchto filtrů s aktivními prvky, jako jsou plně diferenční OTA zesilovače, diferenční proudové zesilovače, diferenční transimpedanční zesilovače aj. Součástí řešení jsou simulace vlastností pomocí počítačových metod a experimentální ověření vybraných zapojení.
The topic is focused to data communication in distributing measuring systems. The research works will be in this areas : the model of distributing system for remote data acqucsition, problems with coexistence with other systems, the secure of data communication for remote data acquisition. The results are applicable for telemetering systems, and control systems not only in energetics.
Tutor: Mišurec Jiří, prof. Ing., CSc.
The work is to analyse model, and solve the parameters of FTTx networks from the viewpoint of service quality and dispersion. The parameters as well as the network design are to be in agreement with the standards of the networks involved. The projected networks, the technologies included, shoud initiate economic development of introducing the systems into access networks in coordination with the service quality and the degree of implementation of the systems into access networks.
The topic is focused to direct and indirect A/D converters. The research work will be oriented to solve and analysis of converters using current and voltage conveyors. The main view is available rate and accuracy of conversion.
The theme is focused on processing of images produced by body slices acquisition using magnetic resonance. The goal is to improve properties of particular images in slice sequence, their segmentation, 2D object recognition and construction of 3D model of region of interest. The main result of the work will be spatial model utilizable by solving of concrete diagnostic problems in cooperation with doctors.
The theme is focused on processing of dynamic medical ultrasound images. The goal is to improve properties of particular images in video sequence, their segmentation, object recognition and quantification of their parameters in dependence on time. General analysis of source sequence will be utilizable by solving of concrete diagnostic problems in cooperation with doctors.
The work will solve the development of new technologies focused on FTTH networks operations. They are to cover the development of these technologies on all the levels of network. It is supposed to include industrial applications (splitter included) for high optical performances. Modelling networks will, after considering practical proposals, will be checced, measured, nad verified from the viewpoint of their effectivity and quality parametrs.
The work will be focused on the design of equalization systems for alternative multicarrier modulation called Filtered MultiTone modulation (FMT). The goal will be to design and test the equalization method and the method of equalizer coefficient design for FMT modulation. Based on this groundwork the new approaches to solving these systems will be introduced. Individual approaches will be tested in simulations and practical realizations.
The so-called frame theory is nowadays a very modern, however yet not widespread technique, which raised from the effort to find signal representations different form the Fourier spectrum (harmonics) or the wavelet spectrum (sum of dilated and translated versions of an oscillatoric wave). Frames represent nonorthogonal expansion of the signal, which is an advance in that the basic elements can be chosen arbitrarily, but a disadvantage at the same time in that the number of possible representations is infinite. This means that we have to choose the representation which would be the most suitable for interpretation or the sparsest one for purposes of compression. Frames can be efficiently utilized also in the image processing field. The goal of the thesis would be the research of applications of frames in detection of the objects in the image, compression of images etc.
The so-called frame theory is nowadays a very modern, however yet not widespread technique, which raised from the effort to find signal representations different form the Fourier spectrum or the wavelet spectrum (sum of dilated and translated versions of an oscillatoric wave). Frames represent nonorthogonal expansion of the signal, which is an advance in that the basic elements can be chosen arbitrarily, but a disadvantage at the same time in that the number of possible representations is infinite. This means that we have to choose the representation which would be the most suitable for interpretation or the sparsest one for purposes of compression. Whether the frames could be utilized efficiently in field of the speech signal processing would be question to answer during the research work during the PhD study: for example in the field of speech coding, there is a chance to modify the classical linear predictive mechanism, or/and the vector quantization step could be possibly improved.