A channel coding architecture adopted in the Digital Television Terrestrial Broadcasting

Digital television terrestrial broadcasting (DTTB) has been developing rapidly in recent years. In this paper the channel characters of the DTTB are described. Then a channel coding architecture adopted in the DMB-T (terrestrial digital multimedia/television broadcasting) protocol is presented. This scheme introduces turbo code and turbo-TCM code into DTTB. Simulation results of C/N threshold and bit-error-rate (BER) curves with QPSK and 64QAM modulation have also been shown for this architecture. Compared with other schemes in existing international standards, a conclusion can be drawn that the channel coding scheme presented in this paper has better performance.