Patent ID: 8331500

Claim:
A receiving system comprising: a tuner for receiving a broadcast signal including a data group, wherein the data group comprises mobile service data, a plurality of known data sequences, and signaling data, wherein the signaling data comprises fast information channel (FIC) data and transmission parameter channel (TPC) data, wherein the FIC data include information for rapid mobile service acquisition, and wherein the TPC data include version information of the FIC data; a known sequence detector for estimating an initial frequency offset and detecting position information of each known data sequence based on one of the plurality of known data sequences, which comprises a first M symbol sequence and a second M symbol sequence each having a first data pattern; a carrier recovery unit for acquiring an initial frequency synchronization and performing carrier recovery from the broadcast signal based on the initial frequency offset estimated by the known sequence detector; and a channel equalizer for performing channel equalization on the broadcast signal based upon the position information of each known data sequence detected by the known sequence detector.