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ARM Cortex M4 Development board
Volek, Lukáš ; Macho, Tomáš (referee) ; Burian, František (advisor)
In this work I aimed at designing a universal system for testing either STM32F407/417 by STMicroelectronics and later various sensors and communication buses. The result then is a main board with many specific connectors for individual buses even with connectors making all I/O pins accessible at the same time. Thanks to advanced switching regulators the power supply is capable of accepting a wide range of sources like single Li-Ion cell, pair of alkaline cells, 12V Lead battery, common wall power adapters (both DC and AC up to 15 Vpp ), USB, laboratory power supplies with multiple outputs and finally POE (Power Over Ethernet). Supply voltages are supervised by voltage comparators with an optical signalisation. (It is possible to determine the sick branch without a measuring instrument and blowing components in the most cases.) Another important parameter was a robustness of the supply and communication lines. There is a number of TVSs, chokes, and big and low ESR capacitors A PC software is intended for a basic functionality demonstration only.
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Ethernet for metallic cables
Víteček, Aleš ; Člupek, Vlastimil (referee) ; Zeman, Václav (advisor)
The bachelor thesis "Ethernet for Metallic Cables" deals with the analysis of Ethernet technology, the most used technology for running computer networks. Specifically, it is focused on transmission via metallic line. The aim of this thesis is description of technology, research of the latest Ethernet standards, including the latest categories of metallic lines. Laboratory tasks and its implementation are described below. This thesis also contains a detailed lab instructions and reference values.
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Universal Cabling Design for the Company GNT s.r.o
Doležal, Martin ; Koleňák, Jiří (referee) ; Ondrák, Viktor (advisor)
The thesis is to analyse and design universal cabling in a multi-functional house that will be subject to a thorough reconstruction. The house shall serve for business purposes of the company GNT, s.r.o.. The cabling design is based on investor´s requirements and the construction plan analysis of the house. There had been no computer network in the house. The thesis shall encompass a complete documentation of the project, and its estimated budget.
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Communication systems based on MB-OFDM
Škapa, Martin ; Šebesta, Vladimír (referee) ; Maršálek, Roman (advisor)
The aim of the Master’s Thesis is to describe ideas of the MB-OFDM principle that represents the possibility of OFDM principle implementation in ultra wideband systems. There are compared physical layers of the IEEE 802.15.3a and the ECMA-368 standard which include the MB-OFDM principle. In practical part of the thesis, there was created a model of ECMA-368 physical layer in MATLAB environment including CDMA access principle. Finally, the MB OFDM system resistance against disturbance and the Peak-to-Average-Power Ratio is analyzed and commented.
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Computer Network Design for the Multifunctional House
Lukeš, Pavel ; Steidl, Jaromír (referee) ; Ondrák, Viktor (advisor)
This bachelor thesis deals with the analysis, followed by design of a computer network in the multifunctional house, which will be used for purposes of an unnamed company and also for a family of four members. First part is based on the analysis of the current state of the house. The second part is focusing on the theoretical bases, which will be used, together with an analysis, to design a custom solution. This custom solution, including specific procedures and elements, which will be implemented in realization, is described in the final part of this bachelor thesis.
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GSM-EDGE and UMTS Systems Coexistence
Gleissner, Filip ; Hanus, Stanislav (advisor)
The dissertation thesis deals with the investigation of the coexistence of GSM–EDGE and UMTS systems with focus on the physical layer of the systems. The aim is to provide a set of recommendations for practical cooperation while the systems operate in both the separated and the common radio bands. A detailed description of signal processing of both the systems on the physical layer is presented. On the basis of this description, models of both systems were created and implemented in the MATLAB environment. The simulations are focused on the physical layer quality parameters, especially the bit error ratio evaluation for various ratios of useful signal power to noise power during the transmission over the radio channel. Simulation is also used to examine the quality of received useful signal while it is interfered by signals from the same and adjacent channels. The purpose is to determine the isolation between these adjacent channels, when the bit error ratio of the useful signal does not exceed a certain reference value. The simulation results are subsequently subjected to comparison with the results of the experimental measurements in laboratory conditions. Before the measurements are carried out, a study of possible interference types is performed. Consequently, the crucial parameters of the measuring equipment used are verified. From the results of simulations and measurements, the proposal of a minimum and recommended carrier separation between both the systems is presented in order to efficiently utilize the assigned frequency spectrum. Furthermore, for the cooperation in both the separated and the common radio bands, the necessary precautions are given for reaching the required isolation and thereby inter-system interference minimization.
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Physical layer model of LTE system
Kounek, Milan ; Wieser, Vladimír (referee) ; Hanus, Stanislav (advisor)
Master’s thesis deals with the signal processing in LTE system, specifically focuses on the physical layer. The first part describes in detail the signal processing at the physical layer of the LTE system. Based on the acquired knowledge of signal processing is created a block diagram that graphically describes the process of the signal processing. Next part deals with the created mathematical model, which is programmed in Matlab. This section describes the limitations of the model, configuration options and view simulation results. The last part shows the results of simulations and analyzed the results.
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Physical security and network management on physical layer
Rozsypal, Ondřej ; Burda, Karel (referee) ; Hajný, Jan (advisor)
This master's thesis is focused on physical security, mainly the network management of the ISO/OSI physical layer. First part deals with the motivation of introducing inteligent solutions. The second part explains the basic principles used in the physical layer management. The third section is focused on particular solutions available by the Molex company. The last parts of this thesis describe identified weaknesses and a comparison of such solution and other solutions provided by competition. The appendix of this thesis involves a created laboratory exercise.
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Novel Hybrid One-wire Bus for Microelectronic Systems
Levek, Vladimír ; Bajer,, Josef (referee) ; Husák, Miroslav (referee) ; Šteffan, Pavel (advisor)
The thesis is focused on the research and development of a new hybrid one-wire bus with special use enabling microelectronic integration. The bus, its physical layer and protocol have been developed based on applied research to meet the complex requirements of a new application group. These requirements are especially laid on the bus robustness and its immunity to interference and to work under real operating conditions. Part of the thesis is a description of existing solutions of one-wire buses, definition of current solutions and setting of goals for research of the new bus. Further are made the design of protocol and operating parameters of the bus operating in low power and power mode. In conclusion, the thesis deals with the practical verification of the proposed solution and there is also suggested a perspective of follow-up research in this area.
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