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MW Converter for SW Receiver
Lejsková, Alena ; Lukeš, Zbyněk (referee) ; Šebesta, Jiří (advisor)
This thesis concerns about the network synthesis of receivers with the demand for conversion of the input signal and a following implementation of assigned converter. At first it introduces the readers with the basic division of radio waves and with parts, which are important for a high-quality receiver, then it deals with general properties of input networks of receivers, division of parts and kinds of connection, that are used in the communications. The concept of connection is intended to nonspecialists too, that is why it describes step by step each of parts of the network, including the calculation or possible solution and the choice of convenient parts. The aim is also to present the frequency conversion as an important part of signal receiving that we want to use in communication systems.
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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.
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Wireless system for household appliances voice control
Potůček, Miroslav ; Háze, Jiří (referee) ; Sajdl, Ondřej (advisor)
The thesis deals with using the human voice for controlling electrical appliances by means of wireless technology. It concerns recognition of individual isolated words which form commands. A method based on the distance from the model is used for recognizing the words. The wireless communication is carried out by modules RFM 01/02 whose properties fully conform to the assignment. The practical realization of the network which is capable of switching on and off is described in this work. The network is designed to match the requirements of the task and to be economical.
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Testing of the LTE basic parameters
Hocz, Jan ; Miloš, Jiří (referee) ; Hanus, Stanislav (advisor)
This thesis deals with brief introduction to LTE system and processing of signal in uplink and downlink. There is also presented some basic parameters that must be met for correctly working equipment in system. These parameters are divided for transmitter and receiver. From these parameters were chosen those, which can be measured in school labs with available measurement devices. For measuring these parameters were created instructions. For easier record of measured data was prepared protocol with blank tables.
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TV Remote Controller
Bordács, Balázs ; Hála, Ondřej (referee) ; Hermany, Jiří (advisor)
This master’s thesis deals with parameters of the TV Remote Controller. Aim of this work is studying standards of remote controling of TV receiver by the way of infra-red light. For succesful solving of this project is important to learn about the theory of IrDA. In the second part ot this thesis is designed measurement unit for measuring the parameters of the remote control. The measurement unit includes an integrated IR receiver and photodiode for receive IR signals from remote control. The description of measurement unit blocks and principles of measuring parameters are also placed there. The final part is devoted to processing the measurement results of measuring levels and time waveforms of signal in the receiver module, directional characteristics of remote control and receiver. For measuremented unit is created laboratory task including the role specification and protocol.
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Lighting control system using a wireless communication network
Levek, Vladimír ; Kadlec, Jaroslav (referee) ; Kuchta, Radek (advisor)
The aim of this thesis is to create and describe the wireless system for lighting control. A part of the work is the creation of modules for switching lighting and the creation of their operating programs. The first chapter briefly describes the way how the lighting control works and contains general requirements for the intelligent home. Further, there is a description of IQRF system, which serves as a wireless platform for the system. Next part of the thesis describes individual modules in terms of hardware and software. One part of the work covers the description of the transmission protocol. The attachment includes a listing of all operating programs for this wireless control system.
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Low-range high-speed optical transceiver
Pučálka, Jan ; Tošovský, Petr (referee) ; Kubíček, Michal (advisor)
The diploma thesis deals with description and design of a low-cost free-space optical (FSO) link. First, general FSO theory is discussed including their common parameters, properties and topologies. Further, optical signal sources and detectors are proposed. Finally, the selected implementation is described including its design and realization. The proposed FSO consists of two identical segments (modules) to form a full-duplex link. The FSO utilizes LED as a light source, maximum speed data rate is 100 Mb/s with 100Base-TX interface.
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Secure PC Connection
Winter, Jan ; Škarvada, Jaroslav (referee) ; Kubek, Ján (advisor)
Aim of this master's thesis is the creation of serial communication interface for FITkit. This serial interface is a full duplex industrial bus based on 20mA loop circuit and it should allow connection of two FITkits by RS-485. Aim of this paper is to design simple software allowing communication of two FITkits and to secure this communication on RS-485 link against interference or transfer errors.
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