Transmission of digital television according to DVB-T specification and simulation on MATLAB v.2023

Abstract

This Msc Thesis presents the DVB-T (Digital Video Broadcasting Terrestrial) system, which is the European standard of the DVB consortium (standardized by ETSI) for the broadcast transmission of digital terrestrial television. Additionally, a developed code for simulated transmission according to the DVB-T specification is presented, using the programming language MATLAB v.2023. The bit error rate (BER) is examined before and after Viterbi decoding, as well as after all error corrections during simulated transmissions. This illuminates the purpose of functional blocks and the influence of settings on the resulting errors in the transmission. Simulations are carried out on the impact of the modulation technique used (QPSK, 16-QAM, and 64-QAM - all non-hierarchical), the effect of the convolutional encoder's code rate, the simulation of hierarchical modulation, and the influence of the transmission channel. The results are presented with diagrams for the BER and conclusions for each simulation. Finally, general conclusions are presented for the simulation of the DVBT system.