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WiFi Network 802.11b and Its Simulation
Martiš, Viktor ; Očenášek, Pavel (referee) ; Šimek, Václav (advisor)
This work deals with the technological background of wireless networks and the conceptual issues of their simulation. The introductory part provides a brief review of essential facts related to wireless networks and simulation flow. Furthermore, our work will focus on one particular type of such networks, which is governed by the standard IEEE 802.11b, also recognized as WiFi network. The actual simulation will be carried out by means of "The network simulator - NS2". Its general description is included together with some practical comments on possible deployment scheme. Then, we design a simple WiFi network which will be subjected to our analysis. The underlying topology was inspired by a real network scheme where the data traffic can be constatnly monitored and evaluated. Simulation of the proposed network was successsfully performed with help of the previously mentioned NS2 simulator. Script written in TCL language, which containted network definition and necessary control commands, served as the simulation input. The final part of this work contains a general summary of individual analyses and their comparison with real-life network performance.
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Global Terrorism and the Media as the Means of Communication
Černikov, Dmitrij ; Střítecký, Vít (advisor) ; Karásek, Tomáš (referee)
The master thesis Global terrorism and the media as the means of communication focuses on examining the relationship between terrorist organisations and the news media which play a key role in planning terrorist attacks. The author assumes that a better understanding of the mutual relationship within the communication process requires the engagement of other players into the research as well: the government and the public. Their mutual interdependence is illustrated on the abstract model from which the author, afterwards, deduces the factors which influence relationships between all the players.
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WiFi Network 802.11b and Its Simulation
Martiš, Viktor ; Očenášek, Pavel (referee) ; Šimek, Václav (advisor)
This work deals with the technological background of wireless networks and the conceptual issues of their simulation. The introductory part provides a brief review of essential facts related to wireless networks and simulation flow. Furthermore, our work will focus on one particular type of such networks, which is governed by the standard IEEE 802.11b, also recognized as WiFi network. The actual simulation will be carried out by means of "The network simulator - NS2". Its general description is included together with some practical comments on possible deployment scheme. Then, we design a simple WiFi network which will be subjected to our analysis. The underlying topology was inspired by a real network scheme where the data traffic can be constatnly monitored and evaluated. Simulation of the proposed network was successsfully performed with help of the previously mentioned NS2 simulator. Script written in TCL language, which containted network definition and necessary control commands, served as the simulation input. The final part of this work contains a general summary of individual analyses and their comparison with real-life network performance.
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