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Measurement of the DVB-T2-based MISO Signal influenced by I/Q-errors in the OFDM Modulator
 Buchta, Simon ; Polák, Ladislav
The Second Generation Digital Video Broadcasting Terrestrial (DVB-T2) system stands out as the most advanced system among the second generation DVB standards. Among others, it supports the multiple-input single-output (MISO) transmission technique to enhance terrestrial TV broadcasting. This paper focuses on a performance study of the DVB-T2 system utilizing the MISO technique for various fixed transmission scenarios, which are modeled by different transmission channel models. Additionally, it considers imperfections of the transmitter, due to errors in the Orthogonal Frequency-Division Multiplexing (OFDM) modulator. To facilitate this study, a laboratory measurement workstation with an appropriate measurement methodology is established. The proposed concept enables the interchangeability of measurement equipment and set-top-boxes (STBs).
Úplný záznam
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.
Úplný záznam

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