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Vectoring in xDSL systems
Rada, Dominik ; Číž, Radim (referee) ; Šilhavý, Pavel (advisor)
This bachelor's thesis presents the approximation of VDSL2 and G.fast transmission systems according to pre-selected cable types. The thesis is also focused on the principle of vectoring and its use. The components of the thesis are explained by initialization process in modems with support of vectoring and approximation of Pre-Coder algorithms. A part of the thesis is a created user application in MATLAB, which displays the influence of vectoring on the transfer rates based on user input. In addition, the application captures primary and secondary line parameters, transmission characteristics, and transmitted masks.
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Programmable timer configurable via USB
Dresler, Jan ; Číž, Radim (referee) ; Lattenberg, Ivo (advisor)
This thesis describes the design of printed circuit boards and programming AVR microcontroller, that communicates with the digital thermometer Dallas, also with photoresist circuit and RTC. Using sensors and relay allows switching of different devices. The switch allows direct configuration with computer via USB using the auxiliary circuit UART.
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Sound Module for Evaluation Kit
Priškin, Jiří ; Číž, Radim (referee) ; Sysel, Petr (advisor)
This thesis is dealing with design and putting into operation of sound module for evaluation kit Atmel ATSTK1000. At the beginning, there is an introduction with properties, hardware and software equipment of the evaluation kit which is used for development of embedded devices based on AT32AP7000. The microcontroller AP7000 is a complete system on chip with an AVR32 microprocessor core, containing additional supporting circuits, controllers and interfaces which the core itself does not have included. However, there is no digital to analog converter for audio signal processing. This has led to design an additional module performing this task. A part of thesis describes Intel AC‘97 standard including AC-link interface, which is used for full-duplex data transmission between realized sound module and the evaluation kit STK1000. The sound module is designed as a plug-in card. The last chapter presents the Linux operating system installation process as an SD/MMC Flash memory card boot image creation and test of the sound module under ALSA architecture.
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Visualization of forward error correction securing by block and cyclical codes
Fančal, Petr ; Číž, Radim (referee) ; Šilhavý, Pavel (advisor)
This bachelor thesis provides an introduction to the principles of forward error correction securing by linear block and cyclical systematic codes and its visualization by educational application. First part of the thesis contains comprehensive theoretical base of principles of forward error correction securing and capability of linear block and cyclical systematic codes. Second part describes the educational application, realized in graphical user interface GUI of MATLAB. This application step by step visualizes parts of procedures of securing, error detection and correction. Its main benefit is its usability as illustrative teaching aid.
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Meteorological Station with Remote Access
Svoboda, Josef ; Číž, Radim (referee) ; Sysel, Petr (advisor)
This thesis discusses design and realization of air temperature, pressure and relative humidity measuring device, transmission of measured data over internet and their presentation on a web site. First chapter introduces reader into principles of measuring air temperature, pressure and relative humidity and various types of sensors used for measuring . Next, the conception of designed system is described. Designed system must accomplish tasks from reading raw data from the sensor up to thein graphical presentation to the internet user. Second and third chapter describes hardware and software design of air temperature, pressure and relative humidity measuring unit. In next part one can find description of software used to transmit measured data over internet and software for generating web pages which are shown to users. The work is revieved in the final part of this thesis.
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MIDI Controller for DAW Software Control
Korytář, Matěj ; Číž, Radim (referee) ; Schimmel, Jiří (advisor)
This thesis focuses on problematics of DAW controllers for sound production software. In this thesis is analysed Mackie Control protocol, one of used communication protocols. There is also an overview of MIDI messages, because Mackie Control protocol is based on MIDI protocol. The thesis contains two own DAW controller designs. First one is based on Mackie Control protocol, second one is based on Generic Remote which offers better customization.
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Research into GPS system used for Wireless Sensor Node Localization
Juračka, Jan ; Číž, Radim (referee) ; Šimek, Milan (advisor)
Theme of the thesis is research and possibility of using GPS system from localization in wireless sensor network. Paper deals with the accuracy and energy consumption of GPS localization. Thesis also solve using of localization in local anchor system. Theoretical part describes IEEE 802.15.4 standard, capability of used nodes and describe ways how to use RSSI value to resolve location
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Entropic generator of random numbers
Kolář, Michal ; Číž, Radim (referee) ; Burda, Karel (advisor)
This paper is focused on generating random number via entropy generators. There are described sources of entropy on personal computer and described methods of detecting their entropy. There are also described basic operations used for construction and for concept solution this generator under NIST recommendation for personal computer and methods of their testing.
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Weather station
Rimeg, Martin ; Číž, Radim (referee) ; Lattenberg, Ivo (advisor)
This work deals with the development of a meteorological station for measuring temperature, atmospheric pressure, humidity and light intensity. The main feature of the device is the ESP 8266 module, which records the measured values and sends information to the server. Part of the work is PCB design, selection of suitable sensors and application development for display of measured values. The description of the solution was preceded by the theoretical processing of development topics.
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Model of Enigma Encryption Machine from Lego Technic
Kupka, Ondřej ; Číž, Radim (referee) ; Hajný, Jan (advisor)
The aim of the thesis is to design and implement the possibility of interconnecting the Enigma encryption machine model, built from LEGO Technic and LEGO Mindstorm kit, with the display device and extend the model by the possibikty to enter any text using the Bluetooth keyboard. The input text is then encrypted along with the demonstration of the encryption by the model and the output encryption text is then displayed on the display device screen. The first part of the work is devoted to the beginnings of encryption and development of Enigma encryption machine. Subsequently, it is focused in more detail on the Wehrmacht Enigma model, on the basis of which a web application for model operation was created. The application is designed based on the Ev3dev special firmware for the control unit and written using Python and Flask. The work describes partial parts of the application, individual functions and principles. Part of the work is a manual for model operation.
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