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. 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).

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

2. Effective use of IP networks in crisis situations

   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.

3. 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.

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

4. Geographical routing in wireless sensor networks

   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.

5. Image processing for biometric systems

   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.

6. 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.

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

7. More effective security of wireless networks

   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.

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

8. Non-linear circuits with active elements operating in current and mixed mode

   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.

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

9. 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 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.

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

10. Peer-to-peer network in overloaded locality

    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.

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

11. Physical topology discovery of large-scale IP networks

    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.

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

12. Recognition of dangerous content in image data

    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.

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

13. The segmentation of medical images

    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.

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