Národní úložiště šedé literatury Nalezeno 1 záznamů.  Hledání trvalo 0.01 vteřin. 
Measurement of the SISO/MISO Signal in the DVB-T2 System
Buchta, Šimon ; Kratochvíl, Tomáš (oponent) ; Polák, Ladislav (vedoucí práce)
This thesis deals with a measurement-based study of the second-generation Digital Terrestrial Video broadcasting system (DVB-T2), examining various transmission techniques and imperfections within the orthogonal frequency division multiplexing (OFDM) modulator. For this study, a universal measurement setup was proposed and implemented. The first part of this work focuses on the measurement and evaluation of a real singleinput single-output (SISO) DVB-T2 signal broadcasted in the Czech Republic. The second part examines different DVB-T2 signal configurations, considering multiple-input single-output (MISO) transmission and imperfections in the OFDM modulator with combination of power imbalance between transmitters and in various channels for fixed and mobile reception. The results are evaluated using conventional objective metrics, such as bit and modualtion error ratio (BER and MER), as well as from the perspective of the measurement equipment and receivers (set-top boxes – STBs) used.

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