Open AccessImproving the synchronization of OFDM signals in the system DVB-T2
Author(s) -
S. M. Al-Merahi
Publication year - 2020
Publication title -
synchroinfo journal
Language(s) - English
Resource type - Journals
eISSN - 2664-0678
pISSN - 2664-066X
DOI - 10.36724/2664-066x-2020-6-2-2-6
Subject(s) - guard interval , cyclic prefix , orthogonal frequency division multiplexing , digital video broadcasting , computer science , synchronization (alternating current) , real time computing , digital television , sequence (biology) , interference (communication) , process (computing) , interval (graph theory) , channel (broadcasting) , broadcasting (networking) , electronic engineering , telecommunications , computer network , mathematics , engineering , combinatorics , biology , genetics , operating system
Describe the principles of synchronization in systems of digital television broadcasting DVB-T2 and TDS-OFDM (DTTB), which provide all forms of synchronization with the signal analysis in time and frequency domains. In the system TDS-OFDM guard interval to obtain the pseudo-random sequence – m-sequence, which is used for synchronization and estimation of channel state. It allows to provide high interference immunity of the system and the acceleration of the synchronization process. It is proposed to use m-sequence in the system of DVB-T2 with placing it in the protective interval. The results of the modeling process correlation of m-sequence, transmitted together with the information of the cyclic prefix.