hat
Tan se senkronizasyon nan tout pake yo transmèt nan kouran an transpò nan done yo multiplex final asire pa siyal la tan 1 p (batman kè pou chak dezyèm), ki se akeri soti nan sistèm nan GPS. Siyal sa a kontwole tan enklizyon ensifonize nan pake espesyal MIP a (Megaframe Inisyalizasyon Pake) nan kouran an transpò nan kòmansman chak mega-ankadreman. Transpò kouran MPEG2, ki te pwodwi pou egzanp nan sant lan playout (estidyo televizyon), yo ka pote nan transmètè endividyèl yo pa divès la. rezo distribisyon (via satelit, liy mikwo ond, fib optik, rezo ATM) avèk reta tan diferan. Se poutèt sa, tan an senkronizasyon pa siyal la GPS fèt ankò nan chak nan transmeteur. Yon rezilta operasyon sa a se eta a, kote tout transmetè DVB-T emèt senbòl OFDM idantik nan egzakteman menm tan an.
eng
Time synchronization of the all transmitted packets in the transport stream of the final data multiplex is ensured by the time signal 1 pps (pulse per second), which is acquired from the GPS system. This signal controls time synchronous insertion of the special packet MIP (Megaframe Initialization Packet) into the transport stream at the beginning of every mega-frame. Transport stream MPEG2, generated for example in the playout center (TV studio), can be carried to the individual transmitters by the diverse distribution networks (via satellite, microwave line, optical fibre, ATM networks) with different time delays. Therefore the time synchronization by the GPS signal is performed again in each of transmitters. A result of this operation is the state, whereat every DVB-T transmitter broadcasts identical OFDM symbols at exactly the same time.