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Original title in Czech: TeleinformatikaFEKTAbbreviation: PP-TLIAcad. year: 2010/2011
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.
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. Research into the assurance of Quality of Service (QoS) in the present Internet and in IP version 6. Effective transmission of photographs, video, fingerprints, and so on. Research into and realization of securing classes of service, assigning different connection priorities, warranting fixed bandwidth and constant delay. Streamlining the transmission node - groups of nodes. Design of new algorithms for QoS assurance, creation and optimization of a uniform interface that will minimize the specific features of the network technologies used.
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.
Human emotions are expressed on the basis of speech, motional and expressive communication. The aim of the dissertation is a joint non-redundant analysis of audio and video signals that describes human emotional states, and on this basis to propose new methods for automatic recognition of emotional states.
Tutor: Smékal Zdeněk, prof. Ing., CSc.
The aim is to do research into frequency filter circuits with new active circuit elements such as amplifying current conveyors, difference current amplifiers, etc. To find new circuits, the HP multiprocessor computer station will be used. Experience of programming in the MATLAB language is required.
Tutor: Vrba Kamil, 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 scene acquisition for multi-view imaging, which means namely a new method of disparity map determination.
Tutor: Říha Kamil, doc. Ing., Ph.D.
Wireless sensor networks is rapidly developing technology impacting areas such as military (battlefield monitoring) and environmental monitoring (wildfires, water floods). The student's research will deal with the investigation of communication in sensor networks regarding reliability, speed and energy efficiency. Communication parameters will be evaluated in a real wireless sensor network. Further information about communication in sensor networks can be found at http://www.dinesgroup.org/.
Tutor: Komosný Dan, prof. Ing., Ph.D.
The work will analyse, model and design secure communication protocols to control terminals in wide area networks.
Tutor: Zeman Václav, doc. Ing., Ph.D.
Text messages in the form of emails and SMS are today a communication medium equivalent to telephone calls. Type-written messages about dangerous situations in call-centres or evaluation operators in touch with customers grow an importance from the viewpoint of emotion analysis. The aim of the PhD thesis is to analyze type-written text and then to propose a new method that enables evaluating an emotional state of the writer of type-written message.
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.
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.
Localization of nodes in the Internet becomes popular nowadays. Its main use is in large-scale communication applications. The current ways of localization are commonly based on artificial coordinate systems. However, the geographical position can be estimated using other localization techniques. The Ph.D. student's research will deal with node position estimation in access and backbone networks. For this purpose, an experimental IP network will be used. Further information about this topic can be found at http://adela.utko.feec.vutbr.cz/projects/.
One of the main characteristics of Mobile Ad-hoc Networks (MANET) is that they have no fixed network infrastructure but at the same time all end-nodes provide also routing functionalities. For this reason the process of searching for an optimal route through the MANET network must take into account also mutual position of the network nodes and the properties of the physical environment. In such a dynamically changing network environment standard routing algorithms are unusable and recently large attention is paid to routing protocols which can operate efficiently in networks with this kind of loose topology. Since the majority of network nodes in MANET are battery operated, another key requirement on the routing protocol is the minimization of routing-message exchange and selection of an energy-efficient route requiring minimum transmission power. The aim of the Ph.D. work proposed is to design and evaluate by simulations a routing protocol, which, in addition to satisfying the previous requirements, is also able to handle correctly the requirements on quality of service. For this purpose a method of network-resource evaluation for MANET should be developed, together with a distribution system able to exchange information about the used and unused network resources, especially bandwidth, between the nodes within the given locality. In addition, efficient routing requires the end-stations to be able to estimate their network resource consumptions with a given precision. Based on the information about network resources and application requirements the routing protocol suggested should be able to find a route, which beyond the energy efficiency is also able to guarantee the resources required.
Tutor: Molnár Karol, doc. Ing., Ph.D.
The goal of the study would be modification of the state-of-the-art methods of modelling the trafic. The newly developed models shoul cover also the dynamic properties of various types of transmissions such as HTTP, FPT, VoIP.
Tutor: Rajmic Pavel, prof. Mgr., Ph.D.
Analysis of the present state of security in the area of electronic data transfer employing encryption algorithms and data integrity. In the analysis, the known methods used by attackers will be taken into account. Research will be done into methods aimed at suppressing potential risks and threats in connection with computer criminality. The goal proper of the dissertation will be the proposal and verification of the conception of a system for secure electronic data transfer.
Multi-channel methods give information about space, that is to say from which directions signals come, and thus they make directional adaptation possible. The aim of thesis is to design a new method for blind source separation and, at the same time, to suppress music noise, which may arise in it. It is recommended to combine linear and non-linear methods for this purpose.
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.
Nowadays videocommunication and videoconferencing services are more and more frequently used forms of communication. However the video quality is rather low due to the limited bit-rate, especially in wireless and mobile networks. In video signal the human face and visible part of the body are the most important parts. These parts should be considered during compression and their quality should be higher than for the rest of the frame. The goals of the thesis are to analyse current face and body detection techniques in video signal, to design new compression method for bandwidth-limited videoconferences and to design new technique for speaker detection in a group of people.
Tutor: Novotný Vít, doc. Ing., Ph.D.
Wireless sensor networks is rapidly developing technology impacting areas such as military (battlefield monitoring) and environmental monitoring (wildfires, water floods). Nodes position is required for the full functionality of sensor networks. The student's research will deal with the investigation of the localization algorithms for wireless sensor networks. Localization algorithms will be evaluated in a real wireless sensor network. Further information about nodes localization in sensor networks can be found at http://www.dinesgroup.org/.
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 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 neural networks software simulation and Opnet Modeler in routing principles.
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.
When investigating living and non-living tissue structures with the aid of various methods, we can obtain 2D images, which need to be further processed. They may be degraded by noise, artefacts etc. It is necessary to enhance them and then segment them or select their part or evaluate their properties (circumstance or area chosen objects). The aim of the dissertation is to design a new method that will suppress noise in the image and be able to choose and evaluate object or properties of our interest.
The human perception of the audio signal processing quality. The analysis of distortion produced by various methods of audio signal processing and their influence to the sound quality perceived by human. The design of discrete system for assessment of the audio signal processing quality based on signal comparison before and after signal processing. The verification of the designed assessment method for various methods of compression, restoration, and noise suppression of audio signals. The application of new method in QoS systems.
Tutor: Balík Miroslav, Ing., Ph.D.
Mobility support gradually becomes an essential part of all newly developed wireless network technology. The optimization of the handover process and its parameters requires sophisticated modelling of these network technologies, which must take into account both the characteristics of the physical environment and realistic movement of mobile users. The Ph.D. work proposed focuses on the later requirement and its aim is to design an algorithm allowing realistic modelling of the behaviour of pedestrial and vehicular mobile end-stations in Mobile Ad-hoc Network (MANET), e.g. according to real maps. To achieve this goal the Ph.D. student should become familiar with the most often used algorithms designed to model the movement of network elements and compare their features. Next, the characteristic of new wireless network technologies, able to build ad-hoc networks, should be studied and the key requirements on the handover process should be identified. The third step of the solution covers the behavioural analysis of real network-users. For this purpose a suitable tracking method for mobile stations should be designed, which will be able to derive the direction and speed of the moving station and the changes in these parameters with a given precision. At the same time a measuring method should be designed and implemented which will be able to identify the exact triggering values for the handover process. Based on the information obtained a modifications of the original movement modelling methods can be proposed to respect more precisely the behaviour of real users and to specify more exactly the paths of data-flows through the MANET network.
Nowadays, there exist methods for segmentwise computation of the wavelet transform with no error. The goal of the study would be to modify such methods and devote them to processign of videosignals. The student shoul also consider optimal paralelization of the task in order to achieve the shortest computation times.
Based on the measurement of objects by means of various methods (tomography, ultrasound processing, infrared or thermal spectra etc.) image data are obtained. The aim of the dissertation is to design a new method, that enables composing a 3D model from 2D images.
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.
Tutor: Gescheidtová Eva, prof. Ing., CSc.
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.
Based on the study of solutions of symmetrical passive frequency filters and filter circuits with operational amplifiers with symmetrical output, the works should propose new filter circuits with active elements such as fully differential OTA amplifiers, difference current amplifiers, difference transimpedance amplifiers, etc. Part of the solution will be simulations of properties using computer methods, and experimental verification of the circuits proposed.
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.
Specific points of face are necessary find in teleroentgen photography. There points are suitable for computing of design tratment for orthodontics. The file of rtg photogrphy is available for testing. The produce is method for exatly determination points of interest for automatic processing cephalometric analyses.
The theme is a creation of the methodology of the 3D modelling and simulation of a force field generated by more distant emission sources of a pulsed vector magnetic potential. As a work principle would be the simulation hereof field based on some of the possible methods (FEM, FDM, FVM, BEM, Monte Carlo or their mutations or combinations) or on the adaptation of commercial SW, at the utilization of contemporary knowledge about this physical phenomenon. The full physical and mathematic models and their corresponding algorithm realizations could be simultaneously confronted with results of laboratory experiments herewith field. The ultimate goal could eventually be a suggestion methodology of the three - dimensional formation hereof field.
Tutor: Rampl Ivan, doc. 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 static, dynamic or three-dimensional images produced by different medical acquisition techniques, namely: body slices acquisition using the magnetic resonance or an output of the sonographic examination. The goal is to improve properties of single images, their segmentation, 2D object recognition, quantification of different object parameters, their dynamic or spatial analysis, or eventual 3D model reconstruction. The main result of the work will be a proposal of a novel method being utilizable for solving of concrete diagnostic problems in cooperation with doctors.
The analysis of the influence of time-variant discrete system on processed signal in a trice of the step modification of the system parameters. The time-variant systems based on the segmentation of the input signal, the segment processing, and the output signal reconstruction from segments. The systems with the variable length of segment and overlap amount. The effective methods of the assessment of statistic signal parameters. The automatic adaptation of the length of segment to current statistical features of processed signal.
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.
In the present, there are attempts to a universal solution for authentication and authorization. The aim of this theme is to suggest a universal framework for authentication and authorization that will be usable for both computer networks and access systems.
Tutor: Burda Karel, doc. Ing., CSc.
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 (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 processign the speech signals.
The goal of PhD. study is a research of graph theory and operations research issues to work out methodology for design and optimization of data network structures when input conditions are specified like traffic flows (input and output) of plarticular nodes, types of running services and their requirements
The theme is focused on construction of models of real 3D scene based on several images or on video sequences acquired by a number of (calibrated or uncalibrated) cameras. The goal is to study and improve existing methods of camera calibration, image correspondence finding and creation of a 3D model with following development of novel automatic and computationally effective reconstruction technique.