Digital broadcasting system and method of processing data in digital broadcasting system

A method of processing broadcast data in a broadcast transmitter, the method comprising:

• forming data groups, wherein each of the data groups is composed of data blocks and includes a portion of mobile service data in a Reed-Solomon (RS) frame, signaling data and known data sequences, wherein a third data block of the data blocks includes a first known data sequence of the known data sequences, wherein a fourth data block of the data blocks includes a second known data sequence and a third known data sequence of the known data sequences and the signaling data, wherein a fifth data block of the data blocks includes a fourth known data sequence of the known data sequences, wherein a sixth data block of the data blocks includes a fifth known data sequence of the known data sequences, and wherein a seventh data block of the data blocks includes a sixth known data sequence of the known data sequences;
• and
• transmitting a transmission frame including data of the data groups, the transmission frame being composed of a plurality of sub-frames,
• wherein the RS frame belonging to an ensemble is built by performing RS-CRC (Cyclic Redundancy Check) encoding on the mobile service data, the ensemble comprising a service map table (SMT) that includes access information of the mobile service data,
• wherein the signaling data include transmission parameter channel (TPC) data that include information for indicating a current sub-frame number within the transmission frame, and
• wherein the SMT further includes profile information, audio sampling rate information and language information for the mobile service data.