Patent ID: 8385383

Claim:
A receiving system, comprising: a signal receiving unit for receiving a broadcast signal that comprises a data group, the data group including mobile service data, a plurality of known data sequences, and signaling data; a demodulator for demodulating the received broadcast signal; an equalizer for channel-equalizing data in the data group of the demodulated broadcast signal by using at least one of the plurality of known data sequences; a turbo decoder for turbo-decoding the signaling data in the data group upon which channel-equalizing was performed; a demultiplexer for distinguishing transmission parameter channel (TPC) data and fast information channel (FIC) data from the turbo-decoded signaling data; a first error corrector for correcting an error in the distinguished TPC data; a block deinterleaver for block-deinterleaving the distinguished FIC data; and a second error corrector for correcting an error in the block-deinterleaved FIC data, wherein the turbo decoder comprises: a first decoder for performing a first decoding process to generate first-decoded signaling data by receiving the channel-equalized signaling data and deinterleaved signaling data, wherein the first decoder comprises N1-way trellis decoders and N1 component decoders respectively connected to the N1-way trellis decoders; an interleaver for interleaving the first-decoded signaling data; a second decoder for performing a second decoding process to generate second-decoded signaling data by receiving the channel-equalized signaling data and the interleaved signaling data, wherein the second decoder comprises N2-way trellis decoders and N2 component decoders respectively connected to the N2-way trellis decoders; and a deinterleaver for deinterleaving the second-decoded signaling data and feeding-back the deinterleaved signaling data to the first decoder, and wherein the first decoder repeatedly performs the first decoding process and the second decoder repeatedly performs the second decoding process a predetermined number of times.