Patent ID: 9537509
Date: 2017-01-03
CPC Classifications: H03M,H04L

Claim:
1. A transmitting apparatus comprising: a Low Density Parity Check (LDPC) encoder configured to encode input bits to generate parity bits according to a code rate of 6/15 and a code length of 64800; an interleaver configured to interleave an LDPC codeword comprising the input bits and the parity bits; and a mapper configured to modulate the interleaved LDPC codeword using 1024-QAM, wherein the interleaver comprises: a parity interleaver configured to interleave the parity bits; and a group-wise interleaver configured to split an LDPC codeword including the interleaved parity bits into a plurality of bit groups, and interleave the plurality of bit groups using the following equation: where X wherein the π(j) is defined as the table below: