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Location Estimation of Objects in WiFi Communication Network
Kohoutek, Jan ; Strnadel, Josef (referee) ; Šimek, Václav (advisor)
The purpose of the thesis is to design and physically implement a system for location of devices in a Wi-Fi based networks deployed in the interior of small and medium-sized enterprises. First of all, the attention is given to the survey of commonly available technologies suitable for determination of the object position. Then, based on these findings, architecture of a location system comprising an array of sensor nodes and central processing unit is proposed. In conclusion, the results are presented and the fulfillment of the requirements is evaluated.
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Wireless Network Aspects
Klein, Lukáš ; Neugebauer, Petr (referee) ; Kříž, Jiří (advisor)
This Bachelor’s thesis deals with the issue of wireless networks. It explains basic terms and classification of wireless networks. It also describes the international standard IEEE 802.11 and its extensions. Closed attention is given to the security of wireless networks including safety recommendations for each group of networks.
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Project Proposal of Introducing Wireless Network
Husák, Petr ; Smolíková, Lenka (referee) ; Doskočil, Radek (advisor)
This work deals with the project proposal of introducing wireless network at elementary school ZŠ Horácké square 13. It analyzes the options for the project and proposes measures to increase the probability of successful project implementation using project management methods. The outcome is plan for management and course the project.
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Analysis of delay dependence of modern communication services and channels, QoS optimization
Rozman, Jiří ; Szőcs, Juraj (referee) ; Endrle, Pavel (advisor)
The main aim of this thesis is to familiarize with options of services using real-time data transfer in wireless networks. Theoretical part presents wireless network based on IEEE 802.11 standard and its practical use. Large part is focuses on 802.11e standart, that provides support for quality of service in wireless networks. Furthemore this thesis deals with transport and applicaton protocols supporting multimedia streaming over computer network. Second chapter is focused on analyzing real computer network with purpose in measuring parametrs influencing quality of service such as bandwith, delay, jitter and loss. Last part deals with the design of wireless network in OPNET Modeler enviroment with focus on simulating parameters that influence quality of service.
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Design of small-size data networks with advanced services
Vaněk, Jiří ; Kubánková, Anna (referee) ; Novotný, Vít (advisor)
The main objective of this thesis is to get acquainted with the field of designing professional data networks and with typical network service required at these networks. A basic description of network hierarchy and of network elements is part of this thesis. At the same time, individual network services and their usage are defined. At the latter part of the thesis there is a suggestion of design creation steps and of service implementation. Further on, the thesis describes a real design of a laboratory task and it’s practical implementation. Detailed guidelines how to complete a laboratory task are part of this thesis.
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Wireless sensoric network for hop drying facility
Čapek, Lukáš ; Čech, Jakub (referee) ; Šnajdr, Václav (advisor)
The purpose of this project is to build a wireless sensor network for measuring temperature and relative humidity in hop drying facility. This is a monitoring device, consists of several sensor units and one control and display unit. Display unit coordinates a whole network and can display data on LCD or download collected data to PC. Sensor unit measures a relative humidity, temperature, battery voltage and transmits data to display unit. Units contain a transceiver which operates in ISM band 868 MHz. Circuits are driven by 8-bits microcontroller Freescale.
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Modelling the wireless transmission channel in OPNET Modeler simulation environment
Spiglazova, Světlana ; Koutný, Martin (referee) ; Hošek, Jiří (advisor)
This diploma thesis deals with modeling wireless transmission in simulation environment OPNET Modeler. In theoretical part, there is described the very substance of spreading the signal via electromagnetic wave including impact of the surroundings that affects the spreading. These impacts have an influence on described selected parameters of wireless transmission of the signal characterizing its quality. Furthermore, there is described the OPNET Modeler setting, which allows designing the wireless transmission and by means of simulation verifies its functionality and acquires it is parameters. The transmission of the signal from transmitter to receiver itself is divided to individual steps, which are described in detail considering the implementation in aforementioned environment. In practical part, there is configured the basic model of wireless network and also executed series of simulations with different variants of commonly adjustable basic parameters of the transmission, as signal modulation, antenna types and network topology. Additionally, attention is turned to the stages of transmission itself, philosophy of their cooperation based on sharing the information via data units called TDA and their implementation in source code of the C++ language called transmission models. Based on these foundations is beyond beforehand defined created new user TDA and by means of simulation verified its correct implementation within packet switching. Values of the selected including user TDA are written in the window of simulation console with the help of the C++ language. Acquired results of the simulations are analyzed and documented in the conclusion. Source codes are available in the diploma thesis appendix.
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Desing of New Network Infrastructure for Youth Home
Pexa, Marek ; Jordán, Vilém (referee) ; Ondrák, Viktor (advisor)
This bachelor thesis is focused on design network infrastrcture and telecommunication outlets in the fourth floor for needs of Domov mládeže. This work is based on analasys which was accomplished from requirements of the investor. This bachelor thesis contains teoretical resources which help better understand the issues of this topic. The aim of this bachelor thesis is to design active and pasive elements of network and economical assesment.
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Wireless Network Aspects
Pluhař, Ondřej ; Ponížil, Michal (referee) ; Koch, Miloš (advisor)
The bachelor’s thesis is about wireless communication, concretely wireless fidelity networks. It deals about IEEE 802.11 standard and also about its modulations. History, development, kinds and properties of wireless network and security is also mentioned. Current situation of one particular company is viewed in further part of the thesis. Some innovations in internet access and security of wireless communication in company network is suggested.
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Wireless Fidelity Networks
Gurka, David ; Boráň, Tomáš (referee) ; Koch, Miloš (advisor)
In the bachelor’s thesis I solve the problems of wireless networks. This theme includes all information about the main terms in wireless networks, amplification of questions about network security and proposal of solution with complications in creation of this network. I will take a look on usage of wireless technology in a company network, to see possible risk origins. I will try to propose and choose optimal usage policy of wireless network.
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