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. Communication latency in IP networks

   The research will deal with an analysis of the influence of networking devices and transmission paths on the communication latency. The goal will be to identify the sources of latency and for these sources estimate the communication latency. Latency prediction is used in a number of networking applications, such as load balancing among the servers in the Internet.

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

2. Communication protocols in distributed systems

   A distributed system consists of partial elements which commutate over a computer network. An example of such distributed systems are applications for data sharing across users and on-line multilayer games. The student will study the current communication protocols and their application in distributed systems. After the initial study, the student will propose possible solutions for solving the current communication issues in distributed systems.

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

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, DBTA). 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. Design of Modern 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. Communication between two cars without a driver intervention, collision avoidance, information transmission about traffic from the places cars left are expected. A highly accurate navigation system based on Galileo system (GNSS) for controlling functional blocks of cars are considered.

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

5. Emergency Communication in IP Networks

   Communication techniques providing emergency calls have to locate the caller in cases when they are not allowed or able to provide it themselves. The current issue of the voice transmission based on the IP protocol is that the location of the caller is not estimated with the required accuracy. The student will deal with an analysis of the current approaches of VoIP users' location. Using the gained knowledge, possible solutions to improve the VoIP users' location will be proposed.

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

6. 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.

7. More Effective security of networks with IEEE 802.11 Standard

   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.

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

8. Novel methods of biological signals extraction from medical images

   The theme is focused on processing of static, dynamic or three-dimensional images produced by different medical acquisition techniques, namely the output of the sonographic examination, body slices acquisition using the magnetic resonance etc. 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.

   Supervisor: Říha Kamil, doc. Ing., Ph.D.

9. Novel methods of incomplete spatial information analysis in digital images

   The theme is focused on the research of novel methods for analysis of incomplete spatial information captured in digital images. These source data can be represented by temporal or spatial sequences eventually by a single image whereas the analysis should result from a given scene geometry.

   Supervisor: Říha Kamil, doc. Ing., Ph.D.

10. Optimalizace směrování ve vysokorychlostních konvergovaných sítích

    The aim of the study is to optimize the routing principles. The architecture of network element with priority routing will be designed. 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 the theory of high-speed network elements. The MATLAB program and Simulink and the VHDL and Visual C++ language in particular are expected to be used in software simulation.

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

11. Overlay networks in Internet

    Overlay network is formed by the nodes of belonging to one or more separate networks. Examples are peer-to-peer networks and distributed systems. The student will analyse the current approaches to the organization of the nodes into the overlay networks. Based on the information gained through the study, the student will propose modifications to improve the efficiency of virtual networks with a focus on the typical applications.

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

12. Position of nodes in Internet

    The student will deal with research into geolocation of Internet nodes. The focus will be on the client-independent location when the node being located is not aware of this process. The currently used approaches are based on location databases (passive) and measurement of communication parameters (active). The work will include an analysis of the current solutions and a proposal of improvements of the location of Internet nodes.

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

13. Routing in IP networks

    Current routing policies in IP networks negatively influence the communication parameters. The research will deal with a study of the routing influence on the connections between computers. The goal will be a proposal of possible methods for the minimization of such negative influences and their evaluation using simulations or measurements in IP networks.

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

14. The Development of Algorithms for the Management of Queues

    Active network elements now use for the management of queues and control of switching a series of powerful algorithms. The task is to implement selected algorithms of queues management into the development system equipped with an FPGA card, instrument performance and develop a custom algorithm that addresses the development of the management of queues in the respect of the standard of marking used for QoS solutions. The resolution will be the knowledge of languages C and VHDL, Matlab, or Verilog.

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

15. Utilization of RC Elements with Distributed Parameters in Electrical Circuits, Fractal Circuits

    The topic aims at the research into utilization of resistive-capacitive elements with distributed parameters (RC-EDP) in electrical circuits especially with modern active elements (conveyors, current amplifiers etc.). In particular it will include design of so-called fractal circuits which have non-integer order of transfer or immittance function and which can be implemented by RC-EDP. It is expected proposing new frequency filters, oscillators, synthetic immittance elements and other circuits. The aim will be improving properties compared to existing circuits (reducing dimensions, increasing response speed, decreasing power consumption etc.) and moreover obtaining characteristics that cannot be realized by classical elements or only at the cost of using complex structures.

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