Patent ID: 9735809
Date: 2017-08-15
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; an interleaver configured to interleave an LDPC codeword comprising the input bits and the parity bits; constellation mapper configured to map the interleaved LDPC codeword onto constellation points; and a transmitter configured to transmit at least one of the mapped constellation points, wherein the interleaver comprises: a group-wise interleaver configured to split the LDPC codeword into a plurality of bit groups and interleave the plurality of bit groups; and a block interleaver configured to interleave the interleaved plurality of bit groups using a plurality of containers, each of the plurality of containers comprising a first part and a second part, wherein a number of bits to be written in the first part is determined based on a number of the plurality of containers and a number of bits of each of the plurality of bit groups, and wherein a number of bits to be written in the second part is determined based on the number of the plurality of containers and the number of bits of each of the plurality of bit groups.