Patent ID: 7200796
Filing Date: 2007-04-03
Classification: G11B,H03M,H04L

Abstract:
1. A QCTC (Quasi-Complementary Turbo Code) generating apparatus comprising: a turbo encoder having a plurality of constituent encoders, for receiving information bits, generating a plurality of parity symbol sequences according to a given code rate by encoding the information bits, and outputting an information symbol sequence and the plurality of parity symbol sequences, each of the constituent encoders for generating at least one parity symbol sequence, the at least one parity symbol sequence from one constituent encoder corresponding to the at least one parity symbol sequence from another constituent encoder; a channel interleaver for individually interleaving the information symbol sequence and the parity symbol sequences, alternately arranging the interleaved symbols of the corresponding parity symbol sequences, and serially concatenating the interleaved information symbol sequence and the arranged interleaved parity symbol sequences; and a QCTC generator for generating a sub-code of a QCTC by repeating the serially concatenated symbol sequence and selecting a predetermined number of symbols from the repeated symbol sequence according to code rate and selection information.