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.

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.

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.

prof. Ing. Zdeněk Smékal, CSc.

1. Design of Advanced IP Sophisticated Telematic Systems in Transport

   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.

   Supervisor: Škorpil Vladislav, doc. Ing., CSc.

2. Advanced Design of Converged Systems

   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.

   Supervisor: Škorpil Vladislav, doc. Ing., CSc.

3. Converters for mutual A/D and D/A conversions working in the current mode

   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).

   Supervisor: Lattenberg Ivo, doc. Ing., Ph.D.

4. Feature analysis of current-mode electronic frequency filters

   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.

   Supervisor: Lattenberg Ivo, doc. Ing., Ph.D.

5. Linear circuits with active elements operating in current and mixed modes

   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.

   Supervisor: Kubánek David, doc. Ing., Ph.D.

6. Localization Algorithms in IP Networks

   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/.

   Supervisor: Komosný Dan, prof. Ing., Ph.D.

7. Localization Algorithms in Wireless Sensor Networks

   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/.

   Supervisor: Komosný Dan, prof. Ing., Ph.D.

8. Making Protection of Wireless Networks More Effective

   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.

   Supervisor: Škorpil Vladislav, doc. Ing., CSc.

9. Non-linear circuits with active elements operating in current and mixed modes

   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.

   Supervisor: Kubánek David, doc. Ing., Ph.D.

10. Optimization of Network Element Design by Evolutional Methods

    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.

    Supervisor: Škorpil Vladislav, doc. Ing., CSc.

11. Optimization of Routing Principles with the aid of Neural Networks

    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.

    Supervisor: Škorpil Vladislav, doc. Ing., CSc.