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Efficiency of Wireless Networks from Services View
Buchta, Marek ; Vymazal, Michal (referee) ; Škorpil, Vladislav (advisor)
Subject of this thesis was the issue of effectiveness of wireless networks from the perspective of services. Become acquainted with WiFi network standard IEEE 802.11 with protocols and principles of WiFi networks and services. It should be focused on the quality of service QoS. In teoretical part of this thesis are described problems considering wireless networks, layer model and types of nets used in WiFi. Standard IEEE 802.11 is analysed in details including supplements and used packets. Special attention is paid to the quality of service QoS. Next are discussed the principles and application services as VoIP, videoconferencing, video streaming and others in WiFi network. On the basis of obtained knowledge is designed extensive WiFi network with assured supply of services. For modelling and simulation of wireless network is used software development environment Opnet Modeler. Model of wireless network is used to optimize and analyse this wireless communication network. In thesis are also simulated properties of data which are sensitive to delay. In last part of thesis is created a laboratory work, which contains a submission of task, detailed theory, wiring diagram, instructions for elaboration, guidelines for simulation and example of elaboration of task. Work is about comparison of network with used 802.11b and 802.11e standard, and support of quality of service QoS.
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Effective usage of telecommunication education environment
Buchta, Marek ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
The topic of this bachelor´s thesis was effective usage of telecommunication‘s educational interface. The main aim of my thesis was to teach software and hardware versions of telecommunication‘s educational environment TIMS from Emona Instruments company. Also the goal of this paper was to design effective usage of educational environment in laboratories in the subject called Access and transport nets. There was a selection of three exercises suitable for these laboratories. These exercises were designed and implemented. Each of these exercises contains extensive theoretical introduction to solve problems, exercise assignment, block diagrams for visual understanding and for insight into measurement and detailed instructions to measurements. After all exercises have been completed exemplary protocols were created. The first exercise carried out was PCM coding and encoding in which students would be introduced with pulse code modulation, its advantages and disadvantages in way of acquiring high-quality broadcast. Second exercise was to focus on the introduction of quadrature amplitude modulation and phase shift keying. Target of the last exercise is to introduce students with binary data transmission via voiceband and factors affecting this transmission.
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Effective usage of telecommunication education environment
Buchta, Marek ; Polívka, Michal (referee) ; Škorpil, Vladislav (advisor)
The topic of this bachelor´s thesis was effective usage of telecommunication‘s educational interface. The main aim of my thesis was to teach software and hardware versions of telecommunication‘s educational environment TIMS from Emona Instruments company. Also the goal of this paper was to design effective usage of educational environment in laboratories in the subject called Access and transport nets. There was a selection of three exercises suitable for these laboratories. These exercises were designed and implemented. Each of these exercises contains extensive theoretical introduction to solve problems, exercise assignment, block diagrams for visual understanding and for insight into measurement and detailed instructions to measurements. After all exercises have been completed exemplary protocols were created. The first exercise carried out was PCM coding and encoding in which students would be introduced with pulse code modulation, its advantages and disadvantages in way of acquiring high-quality broadcast. Second exercise was to focus on the introduction of quadrature amplitude modulation and phase shift keying. Target of the last exercise is to introduce students with binary data transmission via voiceband and factors affecting this transmission.
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Efficiency of Wireless Networks from Services View
Buchta, Marek ; Vymazal, Michal (referee) ; Škorpil, Vladislav (advisor)
Subject of this thesis was the issue of effectiveness of wireless networks from the perspective of services. Become acquainted with WiFi network standard IEEE 802.11 with protocols and principles of WiFi networks and services. It should be focused on the quality of service QoS. In teoretical part of this thesis are described problems considering wireless networks, layer model and types of nets used in WiFi. Standard IEEE 802.11 is analysed in details including supplements and used packets. Special attention is paid to the quality of service QoS. Next are discussed the principles and application services as VoIP, videoconferencing, video streaming and others in WiFi network. On the basis of obtained knowledge is designed extensive WiFi network with assured supply of services. For modelling and simulation of wireless network is used software development environment Opnet Modeler. Model of wireless network is used to optimize and analyse this wireless communication network. In thesis are also simulated properties of data which are sensitive to delay. In last part of thesis is created a laboratory work, which contains a submission of task, detailed theory, wiring diagram, instructions for elaboration, guidelines for simulation and example of elaboration of task. Work is about comparison of network with used 802.11b and 802.11e standard, and support of quality of service QoS.
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