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Original title in Czech: TeleinformatikaFEKTAbbreviation: PP-TLIAcad. year: 2011/2012
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
The studying of the structure and properties of sound intensity probe, which is also used for localization of sound source, will be first step. The research of the adaptive noise cancellation (ANC) algorithm used in two-channel speech enhancement systems will be the next step. The purpose is to design and test a new adaptive algorithm, which partially utilizing the directional properties of the sound intensity probe for speech quality enhancement.
Tutor: Sysel Petr, doc. Ing., Ph.D.
The objective of the project is to analyze the current situation with protection of medical image data solutions at home and abroad. Analysis of the possibility to use watermarking methods, or steganography. Methods for ensuring data authenticity and reliability. Proposal and verification of protection principles application for a wide range of medical studies from different modalities.
Tutor: Dostál Otto, doc. Ing., CSc.
The goal of the dissertation will be the research and design of methods for anonymous authentication in computer networks. The author must analyze pros and coins current methods of anonymous authentication, design a method of anonymous authentication in computer networks and verify the designed method.
Tutor: Burda Karel, doc. Ing., CSc.
The work will be focused on the research of utilization of modern noise source identification methods that combine near-field acoustic holography with beamforming for acoustic field analysis in room acoustic applications, for example in analysis of diffuse elements, energy decay relief, etc. Part of the solution will be also comparison of outputs of these methods with conventional simulation methods that use statistic and wave acoustic and research of possibility of utilization of concurrent processing in these methods.
Tutor: Schimmel Jiří, doc. Ing., Ph.D.
People express their emotions on the basis of voice, movement, mien, etc. These days, text messages in the form of emails, SMSs, etc. are an equivalent communication way for expressing emotions. The thesis aim is to propose a new method for automatic recognition of emotion from text. For this purpose, in addition to a database of keywords, also the semantic meaning of words and phrases should be used.
Tutor: Smékal Zdeněk, prof. Ing., CSc.
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.
The topic is focused on broadband data communication systems over metallic lines, based on technologies using multi-carrier modulation technique (DMT, OFDM,...), like xDSL and Power Line Communication (PLC) systems.
Tutor: Zeman Václav, doc. Ing., Ph.D.
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, DBTA). Requirements to be met by the candidate: the knowledge of circuit theory and simulation programs (MicroCap, PSpice).
Tutor: Lattenberg Ivo, doc. Ing., Ph.D.
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. The aim of the Ph.D. work proposed is to design and analytically evaluate a mechanism which is able to exchange information about the used and unused network resources, especially link capacities. Next, this information will be used for short-term prediction of the amount of transmitted data. The key component of the Ph.D. work is the design of a reliable and accurate prediction algorithm also featuring with limited computational requirement. The results of the prediction algorithm will be used by MANET nodes to estimate the future state of the network and use this knowledge to optimize the handover process of the mobile nodes.
Tutor: Molnár Karol, doc. Ing., Ph.D.
The aim is to create an effective strategy for the use of the public and private IP network for crisis management. Also propose such a network, which could have the capacity, but also in terms of resistance to ensure the crisis communication. This would, in particular, traffic data, voice, TV broadcast. Other parts would propose new methods of Internet communication management-manage the flows of information, etc. Research should include also the influence of network topology on its stability and security, the speed of the spread of viruses, ability to resist attacks, etc. One of the objectives is to design a software robot that will be able to monitor the network topology, where appropriate, the Internet, the aim is to design a system for exchanging files over the Internet, but without any central control. The system would be intuitively usable. The solution should be safe and allow anonymous of the sender and the recipient of the data. The final. design of highly durable network suitable for crisis situations and this proposal prove theory.
Tutor: Škorpil Vladislav, doc. Ing., CSc.
The work will be focused on Fault tolerant (FT) systems, the development of algorithms used in FT systems, and on the possibilities of their implementation, especially in the hospital electronic equipment. An analysis of existing solutions based on fault tolerant systems theory and on the normalization recommendations will be part of the work. Based on this groundwork the new approaches of 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 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.
The aim is to find transformation two-ports for synthetic elements with higher-order immittances while employing active elements such as operational voltage or current amplifiers, voltage followers, current elements, current or voltage conveyors, OTA amplifiers, etc. Based on this knowledge, circuits of most diverse types of frequency filters of the 2nd or higher order as well as precise dc filters will be developed.
Tutor: Vrba Kamil, prof. Ing., CSc.
Wireless sensor networks (WSNs) is rapidly developing technology impacting various areas such as military (battlefield monitoring) and environmental monitoring (wildfires, water floods, etc.). The Ph.D. student's research will deal with the investigation of geographical routing in WSNs. Geographical routing works with the knowledge of mote positions and it is used for delivering data to a specified geographical location. Geographical routing will be evaluated in a real experimental WSN with around 500 motes. Further information about this topic can be found at www.dinesgroup.org.
Tutor: Komosný Dan, prof. Ing., Ph.D.
Theme is focused on the research of novel methods of detection and identification of persons and their acts using the analysis of biological of behavioural characteristic features captured in the image or in video sequences with special focusing on the detection and measurement of human body in the image. Next part of the research is the dynamic humans' motor behaviour analysis which can be used for identification of a person, for the recognition of act kinds, eventually for detailed motional analysis e.g. for sportsman etc. The research should end in the proposal of a novel method usable in systems of intelligent video.
Tutor: Říha Kamil, doc. Ing., Ph.D.
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.
The objective of the thesis will be a conception of low-noise digitally controlled symmetrical voltage or current controlled amplifiers for the processing of audio signal of microphone and line voltage levels. Part of the solution will be circuits for modifying the signal dynamics. Also, research will conducted into low-noise filters and frequency correctors for processing acoustic signals.
The aim of thesis is to use methods of genetic programming for image analysis and image processing. The problem of automatic design of image operators lies in the definition of state space areas that are interesting for us. There is a contradiction between image analysis using low-level parameters and semantic image content. The task is to design, via evolutionary techniques, an automatic computer vision system that can locate and separate the desired object, with the semantic meaning being taken into consideration.
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.
The work will be focused on design, simulation, and verification of methods for implementation of variable room acoustic and room response equalization using electronic digital systems of the multichannel audio signal reproduction. Part of the solution will be also research of possibility of utilization of the concurrent processing in these methods, their implementation in modern multicore processors and graphic processors, and optimization of their algorithms for multichannel real-time signal processing in embedded systems.
The vulnerability of the IEEE 802.11, attacks on the security methods and the methods for its effectiveness. Wireless network security issues expected standards IEEE 802.11. A detailed introduction to these standards, describe the various types of wireless security, including their properties and the subsequent theoretical analysis. The implementation of the attacks on the various methods of modern security algorithms, emphasis will be placed on the identification of weaknesses of 802.11 protocols. On the basis of the findings will be designed and tested security more effective. Attention will be paid to the security quality of service QoS in 802.11 networks. The network will be subject to examination by appropriate programs and simulators (Opnet Modeler, NS2). Will also be examined according to modern services (IP phones, the transmission of video, voice, multimedia) to delay and to be performed, including an overall analysis to the QoS optimization.
The goals of PhD. study are concepts, algorithms, and systems for modeling sound propagation in interactive virtual environment applications. The work will be focused on new physically-based geometric algorithms for modeling the propagation of early arriving sound waves and perceptually-based statistical techniques that provide late reflections and subsequent reverberation effects with the moving sound source and/or listener.
Tutor: Balík Miroslav, Ing., Ph.D.
Noise signal , emission stability, reproducibility of current-voltage characteristics, noise characteristics as well as emission divergence signal will be studied. Methodology consists in an experimental study of measurable quantities, as the noise voltage or current and their spectral density dependence on vacuum, temperature and electric field strength. The noise spectroscopy in time and frequency domain is one of the promising methods to provide a non-destructive characterisation of semiconductor materials and cathodes.
Tutor: Grmela Lubomír, prof. Ing., CSc.
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 doctoral work is an optimization of communication architecture for large-scale ad-hoc systems applying e.g. for the building applications. Nowadays ad-hoc systems for home automation suffer with the restricted scalability a with the low fault tolerance. The student will study and research algorithms for integration of scalability and fault tolerance into the existing communication architectures. The novel methods and algorithms will be tested in the simulation environments and their efficiency validated in the experimental testbed.
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 of development system FPGA. 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.
Supporting the idea of using the data transfer to peer-to-peer communication between devices in a given locality. Simulate the mobile network is congested for, such as exhibitions, concerts, etc. In this case, that people use the same service on a mobile Internet-news, Twitter, Facebook. Proposal for a network, which will organize itself and it will be possible to ensure, through a network of mobile operator the page or information downloaded, only one user in the site, among others, would then spread the content of the ad-hoc networks. With the growing number of facilities would be de facto increased the transport capacity of the network. When the extension of the traffic, despite the different media or across operators will be able to carry calls.
Physical network topology discovery is crucial for many applications working with the knowledge of physical positions. An example can be marketing and sociodemographical data visualization on digital maps. The Ph.D. student's research will deal with discovery of backbone network physical topologies based on measurement of communication parameters. Among others, the accuracy of current and new methods will be investigated. An experimental large-scale network PlanetLab (www.planet-lab.org) will be used. PlanetLab allows the use of servers around the whole world. Further information about this topic can be found at www.dinesgroup.org.
With the development of new network technologies and techniques Mobile Ad-hoc Networks (MANETs) are getting into the focus of interest very quickly. MANET networks have no fixed network infrastructure, which guarantees free movement to the end-stations in the entire network. On the other hand, this free movement of stations raises several new issues that must not have been solved in fixed network infrastructures. The Ph.D. work will particularly focus on the prediction of the direction and speed of future movement of stations based on the knowledge of current network status, parameters of physical environment and statistical evaluation of the stations movement in the past. The predicted information about the expected movement of stations will be used for finding the optimal path from the source to the destination in terms of energy efficiency of the communication process. The majority of the nodes forming a MANET network are mobile and therefore they are usually powered by a battery supply. Due to this fact there will be a particular emphasis on low power consumption in the design of the prediction algorithm. The design of the motion prediction algorithm will be based on both theoretical study and mathematical analysis of traffic flows in MANET networks. The correct functionality of the prediction algorithm will further be approved by simulations.
Mobility support gradually becomes an essential expectation from all newly developed wireless network technology. The optimization of the handover process and its parameters requires sophisticated modelling of these network technologies, which should take into account also 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 end-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 values of triggering parameters of the handover process. Based on the information obtained a modifications in the original movement modelling methods can be proposed to more exactly respect the behaviour of real users and specify more exactly the path of data flows in MANET networks.
Theme is focused on the research of automatic methods for an injurious or suspicious content in image data on web pages, internet galleries and in intelligent video systems. The goal is to develop a novel complex method for object classification in the image content being specified in a training database. The methods can be used e.g. as a parental control, instrument of photo gallery administrators, or in systems of intelligent video - e.g. for detection of violent behaviour, guns, forbidden symbols etc.
The goal of the dissertation will be research and design of an analytical method or simulation tool for verifying security of cryptography protocols. The author must analyze pros and coins of current methods, design a suitable method of security analysis of cryptography protocols and verify the designed method.
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.
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.
Based on the study of solutions to symmetrical passive frequency filters and filter circuits using operational amplifiers with symmetrical output, the theses should propose new filter circuits with active elements such as fully differential operational amplifiers, fully differential OTA amplifiers, differential current amplifiers, differential transimpedance amplifiers, etc. Particular focus will be on new applications of a new integrated current amplifier with programmable current gain. Part of the solution will be simulations of properties using computer methods, and experimental verification of the circuits proposed.
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.
Tutor: Mišurec Jiří, prof. Ing., CSc.
Smart Energy Grids networks often have the character of self-healing networks. Supportive technology is needed to fulfill this attribute, including communication infrastructure. A specific feature of conventional energy grids is that they distribute energy in a one-way fashion. Communication infrastructure enables two-way communication of information in accordance with the transmission of electricity. Two-way communication will provide opportunities to minimize the losses that occur in power distribution. Other supporting technologies are the application of monitoring, management, automation management, diagnostics and maintenance in all parts of the energy chain - production, transmission, distribution, consumption.
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 thesis is supposed to analyze, model, and of service quality in optical access networks. The focus is to be on critical parametrs as limiting factor of new technologies including wave multiplex - WDM in the considered network. The effects of inserted attenuataion, back reflections, chromatic and polarization dispersions - PMD, the non linear effect are to be considered as well.
Tutor: Filka Miloslav, prof. Ing., CSc.
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 goal of PhD. study is a research of modelling and analysis techniques of communication network architectures using Theory of mass service and Graph theory that will enable performance analysis of network structures, design of new network topologies and optimization of network operation parameters.
Tutor: Novotný Vít, doc. Ing., Ph.D.
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.
Underdetermined systems of linear equations have a wide spectrum of applications in the field of image processing (compressed sensing, inpainting removal, denoising, deblurring).
Underdetermined systems of linear equations are potentially useful also for audio signal processing.
Image data can be obtained by scanning the respective objects using different methods (CT, ultrasound, sensing thermal or infrared spectra, etc.). The aim of the thesis is to propose a new method that is able to find and select the desired object and build its 3D model using spatial slices in various directions.