APPARATUS AND METHOD FOR CONSTRUCTING LOW-DENSITY PARITY-CHECK CODES

摘要

PURPOSE: An apparatus and method for generating low-density parity-check codes are provided to improve the performance of an LDPC(Low-Density Parity-Check Code) having a long girth and a longer maximal code length. CONSTITUTION: An LDPC code generation unit includes a plurality of encoders(100-1, . , 100-i, . , 100-M). An ith encoder(100-i) includes an interleaver(110-1) and an MPC encoder(120-i). The Interleaver interleaves by using a shift value at an ith row of an exponent matrix E of H. The Interleaver has a length of ri. The encoder performs parity check by using a predetermined parity-check matrix H.