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2021-12-02 - Travail avec promoteur/Doctorat - Anglais - 311 page(s)

Honfoga Anne-Carole , "Study of advanced signal processing techniques for extended Digital Video Broadcasting-Terrestrial Second Generation", Moeyaert Véronique (p) , Dossou M., soutenue le 2021-12-02

  • Codes CREF : Technologie des télécommunications [transmission] (DI2556)
  • Jury : Gosselin Bernard (p) , Louveaux Jérôme, Horlin François, Abdel Nour Charbel, Kahoun Philippe, Wuilpart Marc , Mégret Patrice
  • Unités de recherche UMONS : Electromagnétisme et Télécommunications (F108)
  • Instituts UMONS : Institut de Recherche en Technologies de l’Information et Sciences de l’Informatique (InforTech)
  • Centres UMONS : Centre de Recherche en Technologie de l’Information (CRTI)

Abstract(s) :

(Anglais) In the present days, the increase of sytem requirements in high-apacity and limited frequency resources also affects the Digital Terrestrail Television (DTT) market as the continuous increase of image quality and screen size corresponds to an increase of bit rate to transmit. DVB-T2 (Digital Video Broadcasting-Terrestrial second generation) is the second generation of European terrestrial broadcasting standard published in 209 and mainly adopted or deployed in many European and African countries due to its higher performance tha the first-generation DVB-T. In this thesis, the focus is mainly on DVB-T2 performance improvements by substituting Orthogonal Frequency Division Multiplexing by proposed 5G waveforms (e.g. Filtered bank Multicarrier (FBMC) or Universal Filtered Multicarrier (UFMC)). Classical uniform QAM are also subtituted by advanced Non-Uniform constellations (NUCs) shaping technique previously proposed in ATSC 3.0 (only worldwide DTT standardcloser to the Shannon limit). The focus is also set on low complexity demapper algorithms proposed for rotated constellation. As these techniques distinctly improved DVB-T2 system capactiy, UFMC and NUCs have mutually been used to substitute OFDM and QAM in DVB-T2. It is noticeable that the UFMC NUCs association is a primer in the literature, whatever the envisaged system. Besides the maximum reachable gain, the complexity, the spectral efficiency and the additional network coverage induced by these techniques (FBMC and UFMC) have also been studied to provide a compliant detail about these advanced signal processing techniques employed int DVB-T2. Furthermore, as the channel is the relevant element during the signal transmission whose characteristics are unpredicatable, this ork studies the impact of uncertainty error that appear during channel measurement. Different applications have been considered in this work; Single Frequency Network (SFN) and urban environment, either with a generic or a measured channel.