20.500.12556/DKUM-46811 MERITVE KAKOVOSTI SIGNALA DVB-T QUALITY MEASUREMENTS OF DVB-T SIGNAL V svetu najbolj razširjen standard za sprejem prizemnih televizijskih programov je DVB-T. V diplomskem delu je DVB-T predstavljen od nastanka do lastnosti in posebnosti. Predstavljeni so tudi sorodni standardi in opisane lastnosti DVB-T omrežij za vzpostavitev učinkovitega prizemnega oddajnega omrežja. Diplomsko delo se osredotoča na meritve kakovosti signala DVB-T oddajnikov, zato so opisane komponente oddajniškega sistema, ki s svojimi lastnostmi vplivajo na izhodni signal oz. signal, ki ga merimo. Predstavitev merilnih parametrov, z namenom meritve posameznega parametra, je kot uvod v peto poglavje, kjer je podrobnejša analiza in teoretična razlaga vseh parametrov, katerih meritve so bile izvajane. Opis meritev z merilnimi rezultati ter opis postopka za doseganje želenih merilnih rezultatov je podan v šestem poglavju. V nadaljevanju sledi še predstavitev predkorektorja, ki je integrirano orodje, kjer s pomočjo grafičnega uporabniškega vmesnika lahko spreminjamo lastnosti signala, ter tako dosegamo želeno obliko izhodnega signala. Ob merilnih rezultatih je v želji po znižanju obratovalnih stroškov oddajnega sistema zelo pomembna tudi učinkovitost oddajnikov, ki je v povezavi z nekaterimi merilnimi parametri in ji je zato namenjeno osmo poglavje. DVB-T is the world most spread standard for reception of ternrestrial television programmes. In my thesis DVB-T is explained from its start of existence to its characteristics and specialities. Similar standards are also presented together with requirements of DVB-T networks for establishment of efficient terrestrial transmission network. Thesis is focusing on the quality measurement of the DVB-T signal from transmitters. That is why components of the transmission system are described, which are with their characteristics influencing on the output signal or signal that is measured. Presentation of the measurement parameters with purpose of measurement of each single parameter is representing the intro to the fifth chapter, where detailed analysis and theoretical explanation of the parameters which were measured is presented. Description of the measurement together with results and description of the measuring process to achieve the desired measurement results is presented in the sixth chapter. In following chapter you are able to find presentation of the pre-corrector, which is an integrated tool, where you can change the characteristics of the output signal with help of the graphical user interface in order to gain the desired form of the output signal. To reduce the operational costs of the transmission system it is important to take care of the efficiency of the transmitter, not only the measurements of the signal, as efficiency is dependent on the measurement parameters everything surrounding this topic is presented in the eight chapter. DVB-T enofrekvenčno omrežje razmerje mofulacijske napake ramensko slabljenje razmerje napake bitov DVB-T Single Frequency Network-SFN Modulation Error Ratio-MER Shoulder Attenuation Bit Error Ratio-BER true true false [S. Žibrat] Slovenski jezik Angleški jezik Diplomsko delo 2014-11-11 14:19:47 2015-02-26 10:41:24 2022-05-19 03:06:09 2021-05-03 03:35:42 2014 0 Maribor 0 0000-00-00 NiDoloceno NiDoloceno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 004.383.3:621.391(043.2) 18561302 URN:SI:UM:DK:Z8DIXFAF VS_Zibrat_Simon_2014.pdf VS_Zibrat_Simon_2014.pdf 1 F900A49AE238548CCD00C1F717BFCCC4 1f0ce4cb964a16711e1139c2ceb949b82d2f89ac4c424f5de6046e82b833c7b5 6b957476-7c0b-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=68789 Fakulteta za elektrotehniko, računalništvo in informatiko 0 0 0