|
|
Signal processing and receiving in UMTS system
Hron, Michal ; Hanus, Stanislav (referee) ; Kejík, Petr (advisor)
This semestral thesis be concerned with datailed analysis of receiving and processing signals in UMTS network system. Insistence of this work is setting to principals of RAKE receiver and processing signals in CDMA networks downlink channel. Through development system MATLAB simulates real function of RAKE receiver. This project is giving fundamental knowledges about receiving and processing of multipath signals to readers.
|
|
|
Device for demonstration of line coding
Navrátil, Marek ; Šilhavý, Pavel (referee) ; Číž, Radim (advisor)
This thesis aims proposal and implementation of laboratory equipment for generating Line codes. The theoretical part describes digital transmission of information and the individual Line codes. The practical part deals with the design and subsequent implementation of the entire device. The results of this works are the theme of device an apparatus for printed circuit boards, software for microcontroller measurement and results.
|
|
|
Use of digital accelerometers in Linet bed controls
Dvořák, Ferdinand ; Sekora, Jiří (referee) ; Kolářová, Jana (advisor)
The subject of this bachelor thesis is a design of methods for accelerometer usage in medical bed controllers in order to eliminate the activation button. In the introduction the Linet company is presented and the issue of legislation and safety of controling the medical beds is briefly discussed. This part is followed by a theoretical chapter considering MEMS technology and accelerometers. The metodology of reference and simulative signals acquisition is designed. These signals are then analysed. In following chapters the particular methods of solutions are presented. The comparison of the presented methods and the final summary of the thesis is included in the conclusion.
|
|
|
Development of laboratory exercises for subject the Signals and systems analysis
Doleček, Josef ; Mucha, Ján (referee) ; Zvončák, Vojtěch (advisor)
The bachelor thesis deals with basic operation with signals and, using demonstrative applications in Matlab, it should explain these operation to CASS (Signals and Systems Analysis) students. In the theory part continuous-time signals (signals classification, periodic signals, Fourier series), complex numbers, sampling and discrete-time signals (operation of convolution and correlation) are described. Practical applications explain: square signal harmonics synthesis, two discrete-time signals convolution and cross-correlation, object distance detection by radar using cross-correlation, complex model of harmonic signal and signals sampling.
|
|
|
Autocalibration of Vibration Sensors
Macháčková, Petra ; Vdoleček, František (referee) ; Zuth, Daniel (advisor)
The main objective of this thesis is presentation of various features of technical diagnostics, such as autodiagnostics and autocalibration. Thesis describes ways to diagnostics of rotocure, presents various types of sensors used in vibrodiagnostics and shows possibilities for their calibration. This work also contains information about automatic calibration of external influences, which affect sensor characteristics.
|
|
|
Classification of Direct and Reflected Signal Using Embedded System
Chalko, Miroslav ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
This thesis aims to design and implement an algorithm for classification of signals that are used for tracking objects using ultra-wideband technology. The classification method should be able to detect an obstruction between receiver and transmitter, which means to classify signals as those with line of sight (LOS) and non-line of sight (NLOS). This system must be quick and lightweight enough, so real-time detection can be achieved directly in the embedded system. While searching for the solution, multiple classification methods were examined. The best-performing ones involved numerous variants of decision tree classifiers. Considering the restricted computing power of embedded devices, random forest classifier was chosen as the final solution. This classification method was able to achieve accuracy of up to 89% while evaluating the dataset. When deployed in real-life environment, it was able to detect an object between transmitter and receiver. Classification and calculation of parameters takes 6000 instruction cycles and the algorithm fits into 4kB of memory. Results of this thesis enable improvement of existing solutions for detection of NLOS signals that degrade tracking performance. This will boost the accuracy of localization while tracking objects in indoor environments.
|
|
|
Editor for VHDL Language
Balaš, Filip ; Korček, Pavol (referee) ; Kajan, Michal (advisor)
This work describes design and development of editor for VHDL language, which allows to work with graphical representation of circuit, with which is possible make changes in connections of components and their hierarchy. The changes in in the graphical representation are reflected to the source code. This work also describes basics of VHDL code structure and some constructs of this language.
|
|
|
Mobile Applications for Real-Time Noise Removal
Siladi, František ; Skácel, Miroslav (referee) ; Novotný, Ondřej (advisor)
The goal of this bachelor's thesis is to create a mobile application which will remove the noise from speech in real time. The first chapter describes the theory related to signal processing and described filters for denoising. The following chapter summarizes existing solutions. The third chapter contains my own design and implementation. At the end of this thesis is the evaluation of the application and evaluation from users.
|
|
|
Speed Increasing for Track Section Tábor - Milevsko
Křemen, Tomáš ; Trejtnar, Radek (referee) ; Svoboda, Richard (advisor)
The work deals with exploring the possibilities of increasing speed for the Tábor - Milevsko railway section. Speed increasing is considered with sequence to perspective train traffic diagram.The final solution is designed to maximize efficiency of expending funds. In the result is brought into account the speed limit on railway crossings, signals, etc.
|
|
|
Computer tasks for subject Signals and Systems
Šimčík, Patrik ; Jirgl, Miroslav (referee) ; Jura, Pavel (advisor)
The content of this work is the design and implementation of tasks using MATLAB programming. These tasks are designed to describe and help the student understand some topics in the field of continuous and discrete signals and systems, which are presented in the subject of Signals and Systems at the Faculty of electrical engineering and communication technologies. From the theme of continuous signals are in this work outlined these problematic areas: analysis of periodic and aperiodic functions, continuous systems and from the theme of discrete signals are selected areas: analysis of discrete signals and discrete systems of first and second order. In the practical part the realization itself is described using a graphical user interface (GUI).
|
guest ::
