Naslov
Architecture of exciter for digital radio and video transmitters

Autori
Grubeša, Tomislav ; Grubeša, Sanja ; Domitrović, Hrvoje

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
ICECom 2005 / - , 2005

Skup
ICECom 2005 18th International Conference on Applied Electromagnetics and Communications

Mjesto i datum
Dubrovnik, Hrvatska, 12.08.2005. - 14.08.2005

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
radio-communications; broadcasting; exciter units of transmitters

Sažetak
Modern radio-communications have begun the transition process from analog to digital radio-communications and broadcasting. During this transition process, main changes are required in exciter units of transmitters. The architecture of transmitters themselves is the same for both digital and analog broadcasting, but the exciters used for digital broadcasting have to create analog RF exciting signals for the transmitters from the digital data stream. The most common modulation procedure used in digital broadcasting systems is OFDM with QPSK or some kind of QAM keying of sub carriers. Apart from RF signal generation, the exciters are often responsible for control of the whole system, because control data is often included in the digital stream distributed from the broadcast center to the transmitters.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA