Patent ID: 8837618
Filing Date: 2014-09-16
Classification: H03M,H04L

Abstract:
1. A transmission processing method comprising: an encoding step of encoding information bits into a codeword according to a low density parity check code with code rate 7/15 and a codeword length of 16200, the low density parity check code shown in Table 1: a bit-interleaving step of conducting parity interleaving and column-row interleaving on bits of the codeword obtained in the encoding step, the column-row interleaving being conducted with or without twist; a bit-to-cell demultiplexing step of demultiplexing a sequence of bits interleaved in the bit-interleaving step into 8 sequences of bits and permuting the 8 sequences of bits according to a predetermined permutation rule; a mapping step of mapping each of 8-bit cell words obtained in the bit-to-cell demultiplexing step, according to a 256QAM (Quadrature Amplitude Modulation) constellation, wherein letting v letting b the predetermined permutation rule is: v