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Internet Connection variants using present TV cable wiring
Lukáč, Michal ; Martinásek, Zdeněk (referee) ; Stančík, Peter (advisor)
This dissertation examines data transfers along the existing lines of cable TV. PLC equipment has been selected as the focus of this examination. The essay examines the question of Multicarrier modulation and focuses more specifically onto the problem of OFDM modulation, which is being used by the selected equipment. It further describes the process of integration of PLC equipment into the cable TV network, modifications of the CATV and the basic topology of the created data networks. The essay also offers a closer look onto a PLC modem and Head End from Corinex that have been used in the implementation of a data network in a selected rural settlement. The author has also raised the issue of the problems connected with cable wires connected with this particular type of data transfers and the solutions of some of the encountered problems. The characteristics of this network have then been measured during normal operation of the created network. Measurements have been carried out in order to determine the transfer speed on a physical and transfer level, the SNR of specific connections and the signal attenuation. The measurements have confirmed the suitability of the used PLC equipment for the purposes of data transfer along the cable TV lines as far as data speed and signal strength was concerned. A map of the particular cable TV lines and the PLC equipment has been included in the attachment.
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Mobile communication systems with multiple antennas
Teplý, Lukáš ; Maršálek, Roman (referee) ; Klozar, Lukáš (advisor)
This term paper deals with the use of MIMO Technology in wireless systems intended for mobile communication. At the beginning are described the advantages of the MIMO Technology and the scheme of the communication channel. The communication occurs through communication channels where each channel has its own capacity and other parameters which are described in chapter two. The following chapter deals with the use of MIMO Technology in wireless network and with the wireless standards based on it. The next chapter applies the mobile communication standards LTE and LTE-Advanced. Their network is nowadays being built around the world. These standards are much more faster in comparison with the existing mobile network and enable to manage the increasing amount of “clever” telephones and of transmitted data in the mobile network. There are described the transfer framework structures and their transmission by this network. The end of this chapter pursues the network LTE working in the world and the situation in the Czech Republic.
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Mobile communication systems with multiple antennas
Teplý, Lukáš ; Maršálek, Roman (referee) ; Klozar, Lukáš (advisor)
This term paper deals with the use of MIMO Technology in wireless systems intended for mobile communication. At the beginning are described the advantages of the MIMO Technology and the scheme of the communication channel. The communication occurs through communication channels where each channel has its own capacity and other parameters which are described in chapter two. The following chapter deals with the use of MIMO Technology in wireless network and with the wireless standards based on it. The next chapter applies the mobile communication standards LTE and LTE-Advanced. Their network is nowadays being built around the world. These standards are much more faster in comparison with the existing mobile network and enable to manage the increasing amount of “clever” telephones and of transmitted data in the mobile network. There are described the transfer framework structures and their transmission by this network. The end of this chapter pursues the network LTE working in the world and the situation in the Czech Republic.
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Internet Connection variants using present TV cable wiring
Lukáč, Michal ; Martinásek, Zdeněk (referee) ; Stančík, Peter (advisor)
This dissertation examines data transfers along the existing lines of cable TV. PLC equipment has been selected as the focus of this examination. The essay examines the question of Multicarrier modulation and focuses more specifically onto the problem of OFDM modulation, which is being used by the selected equipment. It further describes the process of integration of PLC equipment into the cable TV network, modifications of the CATV and the basic topology of the created data networks. The essay also offers a closer look onto a PLC modem and Head End from Corinex that have been used in the implementation of a data network in a selected rural settlement. The author has also raised the issue of the problems connected with cable wires connected with this particular type of data transfers and the solutions of some of the encountered problems. The characteristics of this network have then been measured during normal operation of the created network. Measurements have been carried out in order to determine the transfer speed on a physical and transfer level, the SNR of specific connections and the signal attenuation. The measurements have confirmed the suitability of the used PLC equipment for the purposes of data transfer along the cable TV lines as far as data speed and signal strength was concerned. A map of the particular cable TV lines and the PLC equipment has been included in the attachment.
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