The digital broadcasting system and a data processing method

The digital broadcast system and a data processing method is disclosed. Reception of the digital broadcasting system, the system may include a reception unit, a demodulator, an equalizer, a decoder block, and the RS frame decoder. The reception unit receives a broadcast signal including a mobile service data and the main service data. The mobile service data may configure the RS frame, the RS frame is at least one data packet, said at least one of the base generated by the data packet RS parity and the at least one data packet for the mobile service data and It comprises a CRC checksum generated based on the RS parity. The demodulator converts the data in the broadcast signal received by the receiving unit into a baseband-frame RS RS frame data. Group is the equalization and channel equalization for the data demodulated by the demodulator. The block decoder performs the symbol decoding block-by-block basis for the equalized data from the equalizer. The RS frame decoder corrects an error occurs within the mobile service data, the RS frame by performing the CRC decoding and RS decoding in the RS frame unit for the decoded service data to the mobile. SMT, SG, matching, and signaling information