Patent ID: 8559564
Filing Date: 2013-10-15
Classification: H03M,H04L

Abstract:
1. A receiving system comprising: a tuner configured to receive a passband broadcast signal including a data group that comprises mobile service data, signaling data, and a plurality of known data sequences, wherein one of the plurality of known data sequences includes a first M symbol sequence and a second M symbol sequence each having a first data pattern and the remaining known data sequences include N symbol sequences each having a second data pattern that is different from the first data pattern; a known sequence detector configured to: a carrier recovery unit configured to perform carrier recovery based on the estimated initial frequency offset and position information of the at least one known data sequence; a baseband converter configured to perform complex multiplication between the passband broadcast signal and an output of the carrier recovery unit in order to convert the passband broadcast signal to a baseband broadcast signal; a channel equalizer configured to estimate a channel impulse response (CIR) based on the position information of the at least one known data sequence and compensate for a channel distortion in the baseband broadcast signal; and a turbo decoder configured to perform Parallel Concatenated Convolutional Code (PCCC) decoding on the signaling data in the channel-distortion-compensated baseband broadcast signal, wherein the turbo decoder comprises: