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Simulation of the DVB-C and DVB-C2 transmission and their comparison
Cibulka, Tomáš ; Hüttl, Ondřej (referee) ; Polák, Ladislav (advisor)
This Master thesis deals with description, analysis and simulation of standards of digital video broadcasting DVB-C and DVB-C2. There is described mainly the transmission system, channel coding, type of modulation and OFDM symbols generation. Furthermore, channel models, used for the exploring of their performances are described too. There was created an application with a graphical interface in MATLAB, which simulates transmission in DVB-C2. Based on simulations there are compared influences of each settings on bit error rate of data transmission for both standards. Finally, obtained simulation results are compared with theoretical values.
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Digital television broadcasting according to standard DVB-H
Pospíchal, Martin ; Prokopec, Jan (referee) ; Kratochvíl, Tomáš (advisor)
The bachelor work deals with problems of digital broadcast based on the standard DVB-H. It contains of the theoretic part and than there is the experimental part. The theoretic part compares the standard DVB-T with DVB-H in the introduction. Then comes after the theoretic explanatinon of the source coding of the picture and the standard for the coding the sound, channel coding and the modulation of the signal. Then it describes a scheme for metering the norm of DVB-H composed of a laboratory qauqing apparatuses and its brief describtion. Then comes after the description of the several metered and biased parameters and its impression on the quality and level of the recieved signal. The experimental part deals with the metering of the several parameters, that contains the description of the laid metering constellation diagrams, tables of the measured values, graphics dependences and evaluation of the concrete metering. The metering deals with the influence of the amplitude of the screened signal, phasic error, suppression carrier, amplitude imbalance, convolution code, guard interval and with the using the several modulations on a bit error rate BER, modulation error rate MER (S/N), the quality and the level of the received signal for the several TV channels.
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LTE system models
Navrátil, Petr ; Masopust, Jiří (referee) ; Hanus, Stanislav (advisor)
Master’s thesis is focused on part of mobile network named LTE. Project is analyzes the LTE physical layer, which is divided into four basic parts: Physical channels and modulation, Multiplexing and channel coding, Physical layer procedures, Physical layer measurements. Every part is described by actual 3GPP standard [1]. To understand the problem is expected a reader basic knowledge of OFDM systems, which the LTE system uses. The next part of this master’s thesis is dedicated to mathematic model physical layer of system LTE, created by program Matlab. This model is designed to measure errors in data transmission.
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Transmission analysis and measurements in digital television DVB-S/S2
Kaller, Ondřej ; Ulovec,, Karel (referee) ; Kratochvíl, Tomáš (advisor)
This master’s theses consists of theoretical introduction which includes basic search of referenced literature about digital television systems and picture quality classification. The results of signal character measurement of selected TV channels from satellites ASTRA 1E (DVB-S) and ASTRA 1L (DVB-S2) are provided. The energy budget calculation of downlink and results of 24-hour TS error rate measurement is included as well. The video quality by DVQL metric for each particular program of CS link stream was measured during full 24 hours.
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Simulation of the DVB-C and DVB-C2 transmission and their comparison
Cibulka, Tomáš ; Hüttl, Ondřej (referee) ; Polák, Ladislav (advisor)
This Master thesis deals with description, analysis and simulation of standards of digital video broadcasting DVB-C and DVB-C2. There is described mainly the transmission system, channel coding, type of modulation and OFDM symbols generation. Furthermore, channel models, used for the exploring of their performances are described too. There was created an application with a graphical interface in MATLAB, which simulates transmission in DVB-C2. Based on simulations there are compared influences of each settings on bit error rate of data transmission for both standards. Finally, obtained simulation results are compared with theoretical values.
|
|
|
LTE system models
Navrátil, Petr ; Masopust, Jiří (referee) ; Hanus, Stanislav (advisor)
Master’s thesis is focused on part of mobile network named LTE. Project is analyzes the LTE physical layer, which is divided into four basic parts: Physical channels and modulation, Multiplexing and channel coding, Physical layer procedures, Physical layer measurements. Every part is described by actual 3GPP standard [1]. To understand the problem is expected a reader basic knowledge of OFDM systems, which the LTE system uses. The next part of this master’s thesis is dedicated to mathematic model physical layer of system LTE, created by program Matlab. This model is designed to measure errors in data transmission.
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Transmission analysis and measurements in digital television DVB-S/S2
Kaller, Ondřej ; Ulovec,, Karel (referee) ; Kratochvíl, Tomáš (advisor)
This master’s theses consists of theoretical introduction which includes basic search of referenced literature about digital television systems and picture quality classification. The results of signal character measurement of selected TV channels from satellites ASTRA 1E (DVB-S) and ASTRA 1L (DVB-S2) are provided. The energy budget calculation of downlink and results of 24-hour TS error rate measurement is included as well. The video quality by DVQL metric for each particular program of CS link stream was measured during full 24 hours.
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|
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Digital television broadcasting according to standard DVB-H
Pospíchal, Martin ; Prokopec, Jan (referee) ; Kratochvíl, Tomáš (advisor)
The bachelor work deals with problems of digital broadcast based on the standard DVB-H. It contains of the theoretic part and than there is the experimental part. The theoretic part compares the standard DVB-T with DVB-H in the introduction. Then comes after the theoretic explanatinon of the source coding of the picture and the standard for the coding the sound, channel coding and the modulation of the signal. Then it describes a scheme for metering the norm of DVB-H composed of a laboratory qauqing apparatuses and its brief describtion. Then comes after the description of the several metered and biased parameters and its impression on the quality and level of the recieved signal. The experimental part deals with the metering of the several parameters, that contains the description of the laid metering constellation diagrams, tables of the measured values, graphics dependences and evaluation of the concrete metering. The metering deals with the influence of the amplitude of the screened signal, phasic error, suppression carrier, amplitude imbalance, convolution code, guard interval and with the using the several modulations on a bit error rate BER, modulation error rate MER (S/N), the quality and the level of the received signal for the several TV channels.
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