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Daljinski nadzor sinhronizacije DVB-T omrežja
KOŠČAK, JANEZ (Author), Burnik, Urban (Mentor) More about this mentor... This link opens in a new window

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Abstract
Diplomska naloga obravnava sinhronizacijo v enofrekvenčnih omrežjih s poudarkom na sinhronizaciji omrežja digitalne prizemne televizije (ang. Digital Video Broadcasting – Terrestrial – DVB-T). Namen naloge je predstaviti možnosti učinkovitega daljinskega nadzora oddajniške mreže javnega zavoda RTV Slovenija. Najprej so podane splošne teoretične osnove, ki so potrebne za razumevanje delovanja sistema. Opisano je običajno večfrekvenčno omrežje (ang. Multi-frequency Network – MFN) in običajno enofrekvenčno omrežje (ang. Single-frequency Network – SFN). Prikazana je primerjava obeh omenjenih načinov delovanja, predvsem z vidika potratnosti frekvenčnega spektra. Sledi predstavitev modulacije na principu ortogonalnega frekvenčnega multipleksiranja (ang. Orthogonal Frequency Division Multiplexing – OFDM) in predstavitev delovanja digitalne prizemne televizije. V nadaljevanju je podrobnejši opis delovanja SFN omrežja. Na podlagi analize omrežja RTV Slovenija je predstavljen koncept daljinskega nadzora sinhronizacije in opis implementacije tega nadzora v enoten nadzorni sistem RTV mreže. Po testiranju realiziranega nadzornega sistema so prikazane prednosti daljinskega nadzora SFN oddajniškega omrežja. Opisane so merilne metode in merilna oprema, ki se uporablja pri samem nadzoru. V zaključku sledi kritična ocena delovanja sistema, podane pa so tudi možne izboljšave za učinkovitejši nadzor.

Language:Slovenian
Keywords:SFN, MFN, sinhronizacija, DVB-T, omrežje, nadzor.
Work type:Undergraduate thesis (m5)
Organization:FE - Faculty of Electrical Engineering
Year:2016
Views:390
Downloads:216
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Secondary language

Language:English
Title:Remote control of DVB-T network synchronization
Abstract:
The thesis deals with synchronisation in single-frequency networks with a stress on Digital Video Broadcasting – Terrestrial (DVB-T) network synchronisation. The main aim of the thesis is to present the possibilities of an effective remote control of the public institute RTV Slovenija broadcasting network. The introductory part focuses on theoretical basics, necessary to understand the system’s functioning. Multi-frequency network (MFN) and single-frequency network (SFN) are described. A comparison of both mentioned modes of operation is given, especially in terms of wastefulness of the frequency spectrum. It is followed by a presentation of Orthogonal Frequency Division Multiplexing (OFDM) modulation and a presentation of digital terrestrial television functioning. The following contains a more detailed description of SFN network functioning. Based on the analysis of RTV Slovenija network, the thesis presents a concept of a synchronisation remote control and offers a description of implementing this control into a single control system of the RTV network. After testing the realised control system, advantages of remote control of SFN broadcasting network are presented. Measuring methods and measuring equipment used in controlling are described. The conclusion includes a critical assessment of system functioning as well as possible improvements for more effective control.

Keywords:SFN, MFN, synchronisation, DVB-t, network, control.

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