Transmitting/receiving system and method of processing broadcast signal in transmitting/receiving system

摘要

An apparatus and method for transmitting digital broadcast signal are provided. The apparatus includes a group formatter to format a data group including mobile service data, where the group formatter further maps the mobile service data into a data group of interleaved format, adds N training sequences into a corresponding location of the data group of interleaved format, adds signaling data into the data group of interleaved format, inserts place holder bytes for MPEG header and non-systematic Reed-Solomon (RS) parity into the data group of interleaved format, and deinterleaves the mobile service data in the data group of interleaved format, a non-systematic RS encoder to non-systematic RS encode the mobile service data in the formatted data group and insert non-systematic RS parity obtained from the non-systematic RS encoding into the formatted data group.

主权项

1. A method for processing a digital broadcast signal at a transmitter, the method comprising:
formatting thea data group including mobile service data, wherein formatting the data group comprises:
mapping the mobile service data into athe data group;adding training sequences into corresponding locations of the data group, wherein at least 5 of the training sequences are spaced M segments apart in the data group, wherein at least 1 of the training sequences is inserted between a first training sequence and a second training sequence of the at least 5 training sequences, and wherein M is an integer;adding signaling data into the data group, wherein the signaling data are added betweenfollowing the first training sequence of the at least 5 training sequences and the at least 1 of the training sequences;inserting place holder bytes for MPEG header and non-systematic Reed-Solomon (RS) parity into the data group; anddeinterleaving data in the data group; non-systematic RS encoding the mobile service data in the formatted data group to insert the non-systematic RS parity into locations where the place holder bytes for the non-systematic RS parity were inserted in the formatted data group; and transmitting athe digital broadcast signal including the non-systematic RS-encoded mobile service data.