First-Generation DTTB Standards

Currently, four first-generation DTTB standards are officially approved by the ITU: Advanced Television Systems Committee (ATSC), Digital Video Broadcasting-Terrestrial (DVB-T), Terrestrial Integrated Service Digital Broadcasting (ISDB-T), and Digital Terrestrial/Television Multimedia Broadcasting (DTMB). This chapter describes the operating principle of the 8-VSB mode within 6 MHz bandwidth where the schematic of channel coding and the transmission system is illustrated. Transmission and multiplexing configuration control (TMCC) information provides control signals for each module. These parts are described in detail here. The key for DTMB lies in the well-designed frame header and body structure, good error correction capability, flexible signal processing in time and frequency domains, etc. The forward error correction coding of the DTMB system is formed by cascading the outer code (BCH code) and inner code (LDPC code).