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Measurement and Modeling of Wireless Network Coverage
Julínek, Pavel ; Prokopec, Jan (referee) ; Kaller, Ondřej (advisor)
The diploma thesis describes mobile communication systems GSM and UMTS including the operating principle of these systems. It also deals with the GPS issues and the determination of the location by this system. The signal path losses issues between the transmitter and receiver are also described. The focus is also put on Telit UC864-G model and the measurement system, operated by the created programme with the graphic user interface, which measures parameters of the cellular network according to entered input parameters and saves the measured values into the file. The part of the diploma thesis describes another created programme with the graphic user interface displaying the measured network parameters in map data with the possibility to compare the distribution of the measured signal value in both outdoor and indoor environment and the theoretical value set by the propagation models.
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Communication network for a swarm of unmanned aerial vehicles
Rajm, Jan ; Götthans, Tomáš (referee) ; Janoušek, Jiří (advisor)
This bachelor thesis deals with creation of robust communication network used within swarm of unmanned aerial vehicles and its testing. In the first part, network requirements are presented and selected communication standards capable of transmitting telemetry data are described. The second part describes the software needed for telemetry data transmission and drone control. The third part presents designed communication network for a swarm of drones. Capabilities and differences between the designed network and networks based on other network technologies are presented. Also, the creation procedure of the designed network is described. The fourth part deals with a testing and an evaluation of results.
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Universal GSM communicator
Starčok, Tomáš ; Adámek, Martin (referee) ; Šandera, Josef (advisor)
This thesis deal with the design of GSM communicator controlled via SMS. It describes the general characteristics and parameters of GSM modules. It selects and describes suitable GSM module for this device. Describes the whole process of electronics design in this device. Then describes the design, manufacture, assembling and testing of the PCB. In conclusion it shows the achieved results and electrical parameters of the device.
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Control unit for 3G wireless module
Vávra, Tomáš ; Hanus, Stanislav (referee) ; Klozar, Lukáš (advisor)
This document deals with theoretical analysis of types and parameters of 3G UMTS modules. Briefly describing basic terms and principles of cellular networks and Global Position System. UMTS modules are firstly described from general point of view and subsequently there is comparison of two specific modules. Part of this document is practical design of control unit for 3G wireless module Telit UC864-G. Design starts with analysis of the module features and subsequently there is description of design procedure that begins with block diagram and ends with circuit schematic and printed circuit layout. Last part of this document describes construction of controll unit, its testing and finally even testing of module itself through serial bus RS-232 from PC with use of program with grafic interface, which have been written for this purpose.
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Cellular Network Coverage Model
Unzeitig, Lubomír ; Mikulka, Jan (referee) ; Gleissner, Filip (advisor)
This work deals with a mobile signal propagation in electromagnetic wave form in a real environment of city microcell. The electromagnetic wave passing through the city environment is affected by many kinds of mechanism. It includes especially diffraction along vertical edges of buildings, diffraction across building roofs and buildings or ground refraction. These mechanisms are time variable. If we want to predicate them, we have to use sort of approached model. For an experimental part of this work, the Berg’s recursive model with a possibility of path loses or signal level prediction in a selected microcellular system is chosen. The software for a cellular network coverage is created on the basis of this fact. Its advantage is a possibility of up to five base stations placing and many kinds of settings, e.g. operating frequency, base station transmitting power, base and mobile station antennas height etc. There is a possibility of system GSM 900, GSM 1800 or UMTS choice. The Berg’s recursive model features are checked by simulations on experimental and real maps of build-up area.
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Expertimental GSM jammer
Charvát, Jiří ; Prokopec, Jan (referee) ; Frýza, Tomáš (advisor)
This thesis describes GSM communication, the method of its jamming and design of a jammer for this band. This document is mainly focused on design of the jammer with the variable bandwidth of jamming and the variable level of output power. Requested parameters of jamming are set by a control panel with a LCD display. In this document there is a detailed description of each function block and connection between them. At the end of this thesis there are released measured results of designed jammer.
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Communication Network for a Swarm of Unmanned Aerial Vehicles
Rajm, Jan ; Janoušek, Jiří
This paper deals with the creation of a wireless network for a swarm of unmanned aerial vehicles which enables high enough data throughput for transition of telemetric and application data between unmanned aerial vehicles and ground control station and also enables communication at a greate distance. Even when unmanned aerial vehicles are beyond visual line of sight.
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Communication network for a swarm of unmanned aerial vehicles
Rajm, Jan ; Götthans, Tomáš (referee) ; Janoušek, Jiří (advisor)
This bachelor thesis deals with creation of robust communication network used within swarm of unmanned aerial vehicles and its testing. In the first part, network requirements are presented and selected communication standards capable of transmitting telemetry data are described. The second part describes the software needed for telemetry data transmission and drone control. The third part presents designed communication network for a swarm of drones. Capabilities and differences between the designed network and networks based on other network technologies are presented. Also, the creation procedure of the designed network is described. The fourth part deals with a testing and an evaluation of results.
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Universal GSM communicator
Starčok, Tomáš ; Adámek, Martin (referee) ; Šandera, Josef (advisor)
This thesis deal with the design of GSM communicator controlled via SMS. It describes the general characteristics and parameters of GSM modules. It selects and describes suitable GSM module for this device. Describes the whole process of electronics design in this device. Then describes the design, manufacture, assembling and testing of the PCB. In conclusion it shows the achieved results and electrical parameters of the device.
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Control unit for 3G wireless module
Vávra, Tomáš ; Hanus, Stanislav (referee) ; Klozar, Lukáš (advisor)
This document deals with theoretical analysis of types and parameters of 3G UMTS modules. Briefly describing basic terms and principles of cellular networks and Global Position System. UMTS modules are firstly described from general point of view and subsequently there is comparison of two specific modules. Part of this document is practical design of control unit for 3G wireless module Telit UC864-G. Design starts with analysis of the module features and subsequently there is description of design procedure that begins with block diagram and ends with circuit schematic and printed circuit layout. Last part of this document describes construction of controll unit, its testing and finally even testing of module itself through serial bus RS-232 from PC with use of program with grafic interface, which have been written for this purpose.
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