Patent ID: 11909419
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 5:
6. A transmitting apparatus comprising:
a group interleaver configured to split a codeword into a plurality of bit groups, and interleave the plurality of bit groups;
a block interleaver configured to write some bits among the interleaved plurality of bit groups in a first part of columns, write remaining bits among the interleaved plurality of bit groups in a second part of the columns in a writing direction, read the bits written in the first part, and read the remaining bits written in the second part in a reading direction which is different from the writing direction;
a constellation mapper configured to map the some bits read from the first part and the remaining bits read from the second part to constellation points based on a modulation method; and
a transmitter configured to transmit a signal which is generated based on the constellation points to a receiver,
wherein the modulation method is one of quadrature phase shift keying (QPSK), 16-quadrature amplitude modulation (QAM), 64-QAM and 256-QAM,
wherein the first part comprises a part of each of the columns and the second part comprises a remaining part of the each of the columns,
wherein a number of the bits written in the first part is determined based on the modulation method and a number of the plurality of bit groups,
wherein a number of the remaining bits is determined based on a length of the codeword and the number of the bits written in the first part, and
wherein the remaining bits are written from a first column of the second part after the bits are written to a last column of the first part.