Transmission method and reception device

Abstract

The present invention pertains to a transmission method and a reception device which make it possible to ensure excellent communication quality in data transfer using LDPC codes. In group-wise interleaving, an LDPC code having a code length N of

Description

[Technical Field] This technology relates to methods for transmitting and receiving signals, and in particular to methods and devices for transmitting and receiving signals that can ensure good communication quality, for example, in data transmission using LDPC codes. [Previous Technology] LDPC (Low Density Parity Check) code has a high error correction capability and has been widely used in recent years in digital broadcasting transmission methods such as DVB (Digital Video Broadcasting)-S.2, DVB-T.2, DVB-C.2 in Europe and ATSC (Advanced Television Systems Committee) 3.0 in the United States (see Non-Patent Literature 1). According to recent research, LDPC codes, like turbine codes, have shown that their performance approaches the Schrödinger limit with increasing code length. Furthermore, LDPC codes possess the property that the minimum distance is proportional to the code length, resulting in excellent block error probability characteristics and almost eliminating the so-called error flattening phenomenon observed in the decoding characteristics of turbine codes. This is also one of their advantages. [Previous Art Documents] [Non-Patent Documents] [Non-Patent Document 1] ATSC Standard: Physical Layer Protocol (A / 322), 7 September 2016 [Summary of the Invention] [The problem that the invention aims to solve] In data transmission that uses LDPC codes, for example, LDPC codes are treated as symbols (symbolized) of quadrature modulation (digital modulation) such as QPSK (Quadrature Phase Shift Keying), and these symbols are mapped to the signal points of the quadrature modulation and transmitted. As data transmission using LDPC codes, as described above, has gradually expanded worldwide, there is a growing demand to ensure good communication (transmission) quality. This technology was developed in view of this situation, with the aim of ensuring good communication quality in data transmission using LDPC codes. [Means used to solve the problem] The first transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 2 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of the Constellation; in the pre-recorded group interleaving, the (i+1)th bit group starting from the beginning of the pre-recorded LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the pre-recorded 69120-bit LDPC code is interleaved into a bit group arrangement; the pre-recorded check matrix contains: an M1-row, K-column A matrix at the top left of the pre-recorded check matrix, represented by the defined value M1 and the information length K=N×r of the pre-recorded LDPC code; and an M1-row, M1-column ladder structure adjacent to the right of the pre-recorded A matrix. The structure consists of matrix B; matrix Z, which is the zero matrix adjacent to the right of the previously mentioned matrix B in rows M1 (NK-M1); matrix C, which is the previously mentioned matrix A in rows K+M1 (NK-M1) and adjacent to the previously mentioned matrix B below; and matrix D, which is the identity matrix adjacent to the right of the previously mentioned matrix C in rows NK-M1 (NK-M1); the previously mentioned value M1 is 1800; matrices A and C are represented by checking the matrix initial value table; the previously mentioned matrix initial value table is a table that represents the position of the 1 elements of matrices A and C every 360 columns, and is as follows: The first receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 2 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit group units; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of the Constellation; in the pre-recorded group interleaving, the (i+1)th bit group starting from the beginning of the pre-recorded LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the pre-recorded 69120-bit LDPC code is interleaved into a bit group arrangement; the pre-recorded check matrix contains: an M1-row, K-column A matrix at the top left of the pre-recorded check matrix, represented by the defined value M1 and the information length K=N×r of the pre-recorded LDPC code; and an M1-row, M1-column ladder structure adjacent to the right of the pre-recorded A matrix. The structure consists of matrix B; matrix Z, which is the zero matrix adjacent to the right of the previously mentioned matrix B in rows M1 (NK-M1); matrix C, which is the previously mentioned matrix A in rows K+M1 (NK-M1) and adjacent to the previously mentioned matrix B below; and matrix D, which is the identity matrix adjacent to the right of the previously mentioned matrix C in rows NK-M1 (NK-M1); the previously mentioned value M1 is 1800; matrices A and C are represented by checking the matrix initial value table; the previously mentioned matrix initial value table is a table that represents the position of the 1 elements of matrices A and C every 360 columns, and is as follows: The second transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 4 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of the Constellation; in the pre-recorded group interleaving, the (i+1)th bit group starting from the beginning of the pre-recorded LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the pre-recorded 69120-bit LDPC code is interleaved into a bit group arrangement; the pre-recorded check matrix contains: an M1-row, K-column A matrix at the top left of the pre-recorded check matrix, represented by the defined value M1 and the information length K=N×r of the pre-recorded LDPC code; and an M1-row, M1-column ladder structure adjacent to the right of the pre-recorded A matrix. The structure consists of matrix B; matrix Z, which is the zero matrix adjacent to the right of the previously mentioned matrix B in rows M1 (NK-M1); matrix C, which is the previously mentioned matrix A in rows K+M1 (NK-M1) and adjacent to the previously mentioned matrix B below; and matrix D, which is the identity matrix adjacent to the right of the previously mentioned matrix C in rows NK-M1 (NK-M1); the previously mentioned value M1 is 1800; matrices A and C are represented by checking the matrix initial value table; the previously mentioned matrix initial value table is a table that represents the position of the 1 elements of matrices A and C every 360 columns, and is as follows: The second receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from the data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 4 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit groups; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of the Constellation; in the pre-recorded group interleaving, the (i+1)th bit group starting from the beginning of the pre-recorded LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the pre-recorded 69120-bit LDPC code is interleaved into a bit group arrangement; the pre-recorded check matrix contains: an M1-row, K-column A matrix at the top left of the pre-recorded check matrix, represented by the defined value M1 and the information length K=N×r of the pre-recorded LDPC code; and an M1-row, M1-column ladder structure adjacent to the right of the pre-recorded A matrix. The structure consists of matrix B; matrix Z, which is the zero matrix adjacent to the right of the previously mentioned matrix B in rows M1 (NK-M1); matrix C, which is the previously mentioned matrix A in rows K+M1 (NK-M1) and adjacent to the previously mentioned matrix B below; and matrix D, which is the identity matrix adjacent to the right of the previously mentioned matrix C in rows NK-M1 (NK-M1); the previously mentioned value M1 is 1800; matrices A and C are represented by checking the matrix initial value table; the previously mentioned matrix initial value table is a table that represents the position of the 1 elements of matrices A and C every 360 columns, and is as follows: The third transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 6 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of the Constellation; in the pre-recorded group interleaving, the (i+1)th bit group starting from the beginning of the pre-recorded LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the pre-recorded 69120-bit LDPC code is interleaved into a bit group arrangement; the pre-recorded check matrix contains: an M1-row, K-column A matrix at the top left of the pre-recorded check matrix, represented by the defined value M1 and the information length K=N×r of the pre-recorded LDPC code; and an M1-row, M1-column ladder structure adjacent to the right of the pre-recorded A matrix. The structure consists of matrix B; matrix Z, which is the zero matrix adjacent to the right of the previously mentioned matrix B in rows M1 (NK-M1); matrix C, which is the previously mentioned matrix A in rows K+M1 (NK-M1) and adjacent to the previously mentioned matrix B below; and matrix D, which is the identity matrix adjacent to the right of the previously mentioned matrix C in rows NK-M1 (NK-M1); the previously mentioned value M1 is 1800; matrices A and C are represented by checking the matrix initial value table; the previously mentioned matrix initial value table is a table that represents the position of the 1 elements of matrices A and C every 360 columns, and is as follows: The third receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from the data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 6 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit groups; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of the Constellation; in the pre-recorded group interleaving, the (i+1)th bit group starting from the beginning of the pre-recorded LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the pre-recorded 69120-bit LDPC code is interleaved into a bit group arrangement; the pre-recorded check matrix contains: an M1-row, K-column A matrix at the top left of the pre-recorded check matrix, represented by the defined value M1 and the information length K=N×r of the pre-recorded LDPC code; and an M1-row, M1-column ladder structure adjacent to the right of the pre-recorded A matrix. The structure consists of matrix B; matrix Z, which is the zero matrix adjacent to the right of the previously mentioned matrix B in rows M1 (NK-M1); matrix C, which is the previously mentioned matrix A in rows K+M1 (NK-M1) and adjacent to the previously mentioned matrix B below; and matrix D, which is the identity matrix adjacent to the right of the previously mentioned matrix C in rows NK-M1 (NK-M1); the previously mentioned value M1 is 1800; matrices A and C are represented by checking the matrix initial value table; the previously mentioned matrix initial value table is a table that represents the position of the 1 elements of matrices A and C every 360 columns, and is as follows: The fourth transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 8 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The fourth receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from the data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 8 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit group units; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The fifth transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 10 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The fifth receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 10 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit group units; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The sixth transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 12 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The sixth receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 12 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit group units; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The seventh transmission method of this technology is a transmission method comprising: an encoding step, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 14 / 16; a group interleaving step, which performs group interleaving by interleaving the preceding LDPC code in 360-bit bit groups; and a mapping step, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: The seventh receiving device of this technology is a receiving device comprising: a group-type deinterleaving unit, which restores the original arrangement of the group-interleaved preceding LDPC code derived from data transmitted by the transmitting device; wherein the preceding transmitting device comprises: an encoding unit, which performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 14 / 16; a group-type interleaving unit, which performs group-type interleaving of the preceding LDPC code in 360-bit bit groups; and a mapping unit, which maps the preceding LDPC code to a 4096QAM 1D-NUC (Non-Uniform) in 12-bit units. Any one of the 4096 signal points of Constellation; in the preceding group interleaving, the (i+1)th bit group starting from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement; the preceding LDPC code contains information bits and corresponding bits; the preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by the check matrix initial value table; the preceding check matrix initial value table is a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows: In the first transmission method of this technology, LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 2 / 16. The preceding LDPC code is then interleaved in a group-based interleaving manner, with each group consisting of 360-bit units. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) in 12-bit units. In the preceding group-based interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a sequence of bit groups. The initial value table of the preceding check matrix is ​​defined as described above. In the first receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the first transmitting method will be restored to the original arrangement. In the second transmission method of this technology, LDPC encoding is performed based on the check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 4 / 16. The preceding LDPC code is then interleaved in a group-based interleaving manner, with each group consisting of 360-bit units. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM, in 12-bit units. In the preceding group-based interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a sequence of bit groups. The initial value table of the preceding check matrix is ​​defined as described above. In the second receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the second transmitting method will be restored to the original arrangement. In the third transmission method of this technology, LDPC encoding is performed based on the check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 6 / 16. The preceding LDPC code is then interleaved in a group-based interleaving manner, with each group consisting of 360-bit units. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM, in 12-bit units. In the preceding group-based interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a sequence of bit groups. The initial value table of the preceding check matrix is ​​defined as described above. In the third receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the third transmitting method will be restored to the original arrangement. In the fourth transmission method of this technology, LDPC encoding is performed based on the check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 8 / 16. Group interleaving, where the preceding LDPC code is interleaved in 360-bit bit groups, is then performed. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation), in 12-bit units. In the preceding group interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement. The initial value table of the preceding check matrix is ​​defined as described above. In the fourth receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the fourth transmitting method will be restored to the original arrangement. In the fifth transmission method of this technology, LDPC encoding is performed based on the check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 10 / 16. The preceding LDPC code is then interleaved in a group-based interleaving manner, with each group consisting of 360-bit bits. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units. In the preceding group-based interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a set of bit groups. The initial value table of the preceding check matrix is ​​defined as described above. In the fifth receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the fifth transmitting method will be restored to the original arrangement. In the sixth transmission method of this technology, LDPC encoding is performed based on the check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 12 / 16. Group interleaving, where the preceding LDPC code is interleaved in 360-bit bit groups, is then performed. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation), in 12-bit units. In the preceding group interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a bit group arrangement. The initial value table of the preceding check matrix is ​​defined as described above. In the sixth receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the sixth transmitting method will be restored to the original arrangement. In the seventh transmission method of this technology, LDPC encoding is performed based on the check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 14 / 16. The preceding LDPC code is then interleaved in a group-based interleaving manner, with each group consisting of 360-bit units. The preceding LDPC code is then mapped to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units. In the preceding group-based interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is considered bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into a sequence of bit groups. The initial value table of the preceding check matrix is ​​defined as described above. In the seventh receiving device of this technology, the arrangement of the group-interleaved prefix LDPC codes obtained from the data sent by the transmitting device implementing the seventh transmitting method will be restored to the original arrangement. Furthermore, the receiving device can be a standalone device or an internal module constituting a single device. [Effects of the Invention] If this technology is used, good communication quality can be ensured in data transmission using LDPC codes. Furthermore, it is not necessarily limited to the effects described herein, but may also be any of the effects described in this disclosure.

Implementation Method

Claims

1. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 2 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a preceding LDPC code in 360-bit bit groups; and a mapping step, wherein the preceding LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; wherein in the preceding group interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into an arrangement of bit groups; the preceding check matrix contains: The matrix M1, k columns long, represents the top-left A matrix of the previously mentioned check matrix; the B matrix, k rows long, M1 columns long, adjacent to the right of the previously mentioned A matrix; the Z matrix, k-k columns long, M1 rows long, adjacent to the right of the previously mentioned B matrix, which is a zero matrix; the C matrix, k-k+k columns long, NK-k+k columns long, adjacent below the previously mentioned A and B matrices; and the D matrix, k-k columns long, NK-k+k+k columns long, adjacent to the right of the previously mentioned C matrix, which is an identity matrix. The previously mentioned value M1 is 1800. The previously mentioned A and C matrices are represented using an initial value table for the check matrix. The initial value table for the check matrix is ​​a table that represents the positions of the 1 elements of the previously mentioned A and C matrices every 360 columns.

2. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted by a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 2 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned check matrix contains: The matrix M1, k columns long, represents the top-left A matrix of the previously mentioned check matrix; the B matrix, k rows long, M1 columns long, adjacent to the right of the previously mentioned A matrix; the Z matrix, k-k columns long, M1 rows long, adjacent to the right of the previously mentioned B matrix, which is a zero matrix; the C matrix, k-k+k columns long, NK-k+k columns long, adjacent below the previously mentioned A and B matrices; and the D matrix, k-k columns long, NK-k+k+k columns long, adjacent to the right of the previously mentioned C matrix, which is an identity matrix. The previously mentioned value M1 is 1800. The previously mentioned A and C matrices are represented using an initial value table for the check matrix. The initial value table for the check matrix is ​​a table that represents the positions of the 1 elements of the previously mentioned A and C matrices every 360 columns.

3. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 4 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a preceding LDPC code in 360-bit bit groups; and a mapping step, wherein the preceding LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; in the preceding group interleaving, the (i+1)th bit group from the beginning of the preceding LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the preceding 69120-bit LDPC code is interleaved into an arrangement of bit groups; the preceding check matrix contains: The matrix M1, k columns long, represents the top-left A matrix of the previously mentioned check matrix; the B matrix, k rows long, M1 columns long, adjacent to the right of the previously mentioned A matrix; the Z matrix, k-k columns long, M1 rows long, adjacent to the right of the previously mentioned B matrix, which is a zero matrix; the C matrix, k-k+k columns long, NK-k+k columns long, adjacent below the previously mentioned A and B matrices; and the D matrix, k-k columns long, NK-k+k+k columns long, adjacent to the right of the previously mentioned C matrix, which is an identity matrix. The previously mentioned value M1 is 1800. The previously mentioned A and C matrices are represented using an initial value table for the check matrix. The initial value table for the check matrix is ​​a table that represents the positions of the 1 elements of the previously mentioned A and C matrices every 360 columns.

4. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted from a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 4 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned check matrix contains: The matrix M1, k columns long, represents the top-left A matrix of the previously mentioned check matrix; the B matrix, k rows long, M1 columns long, adjacent to the right of the previously mentioned A matrix; the Z matrix, k-k columns long, M1 rows long, adjacent to the right of the previously mentioned B matrix, which is a zero matrix; the C matrix, k-k+k columns long, NK-k+k columns long, adjacent below the previously mentioned A and B matrices; and the D matrix, k-k columns long, NK-k+k+k columns long, adjacent to the right of the previously mentioned C matrix, which is an identity matrix. The previously mentioned value M1 is 1800. The previously mentioned A and C matrices are represented using an initial value table for the check matrix. The initial value table for the check matrix is ​​a table that represents the positions of the 1 elements of the previously mentioned A and C matrices every 360 columns.

5. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 6 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a prior LDPC code in 360-bit bit groups; and a mapping step, wherein the prior LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; in the prior group interleaving, the (i+1)th bit group starting from the beginning of the prior LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the prior 69120-bit LDPC code is interleaved into an arrangement of bit groups; the prior check matrix contains: The matrix M1, k columns long, represents the top-left A matrix of the previously mentioned check matrix; the B matrix, k rows long, M1 columns long, adjacent to the right of the previously mentioned A matrix; the Z matrix, k-k columns long, M1 rows long, adjacent to the right of the previously mentioned B matrix, which is a zero matrix; the C matrix, k-k+k columns long, NK-k+k columns long, adjacent below the previously mentioned A and B matrices; and the D matrix, k-k columns long, NK-k+k+k columns long, adjacent to the right of the previously mentioned C matrix, which is an identity matrix. The previously mentioned value M1 is 1800. The previously mentioned A and C matrices are represented using an initial value table for the check matrix. The initial value table for the check matrix is ​​a table that represents the positions of the 1 elements of the previously mentioned A and C matrices every 360 columns.

6. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted by a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 6 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned check matrix contains: The matrix M1, k columns long, represents the top-left A matrix of the previously mentioned check matrix; the B matrix, k rows long, M1 columns long, adjacent to the right of the previously mentioned A matrix; the Z matrix, k-k columns long, M1 rows long, adjacent to the right of the previously mentioned B matrix, which is a zero matrix; the C matrix, k-k+k columns long, NK-k+k columns long, adjacent below the previously mentioned A and B matrices; and the D matrix, k-k columns long, NK-k+k+k columns long, adjacent to the right of the previously mentioned C matrix, which is an identity matrix. The previously mentioned value M1 is 1800. The previously mentioned A and C matrices are represented using an initial value table for the check matrix. The initial value table for the check matrix is ​​a table that represents the positions of the 1 elements of the previously mentioned A and C matrices every 360 columns.

7. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 8 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a prior LDPC code in 360-bit bit groups; and a mapping step, wherein the prior LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; wherein in the prior group interleaving, the (i+1)th bit group starting from the beginning of the prior LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the prior 69120-bit LDPC code is interleaved into an arrangement of bit groups; the prior LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

8. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted by a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 8 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

9. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 10 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a prior LDPC code in 360-bit bit groups; and a mapping step, wherein the prior LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; wherein in the prior group interleaving, the (i+1)th bit group starting from the beginning of the prior LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the prior 69120-bit LDPC code is interleaved into an arrangement of bit groups; the prior LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

10. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted by a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 10 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

11. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 12 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a prior LDPC code in 360-bit bit groups; and a mapping step, wherein the prior LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; wherein in the prior group interleaving, the (i+1)th bit group starting from the beginning of the prior LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the prior 69120-bit LDPC code is interleaved into an arrangement of bit groups; the prior LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

12. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted from a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 12 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

13. A signal transmission method comprising: an encoding step, wherein LDPC encoding is performed based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 14 / 16; and a group interleaving step, wherein a group interleaving is performed by interleaving a prior LDPC code in 360-bit bit groups; and a mapping step, wherein the prior LDPC code is mapped in 12-bit units to any one of the 4096 signal points of a 1D-NUC (Non-Uniform Constellation) of 4096QAM; wherein in the prior group interleaving, the (i+1)th bit group starting from the beginning of the prior LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the prior 69120-bit LDPC code is interleaved into an arrangement of bit groups; the prior LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

14. A receiving device comprising: a group-type deinterleaving unit, which restores the arrangement of group-interleaved prefix LDPC codes derived from data transmitted by a transmitting device to the original arrangement; wherein, The aforementioned transmission device comprises: an encoding unit that performs LDPC encoding based on a check matrix of an LDPC code with a code length N of 69120 bits and a coding rate r of 14 / 16; a group-type interleaving unit that performs group-type interleaving by interleaving the aforementioned LDPC code in 360-bit bit groups; and a mapping unit that maps the aforementioned LDPC code to any one of the 4096 signal points of a 4096QAM 1D-NUC (Non-Uniform Constellation) in 12-bit units; In the aforementioned group-type interleaving, the (i+1)th bit group starting from the beginning of the aforementioned LDPC code is regarded as bit group i, and the arrangement of bit groups 0 to 191 of the aforementioned 69120-bit LDPC code is interleaved into a bit group arrangement; The aforementioned LDPC code contains information bits and corresponding bits; The preceding check matrix contains: an information matrix part corresponding to the preceding information bits and a corresponding matrix part corresponding to the preceding corresponding bits; the preceding information matrix part is represented by an initial value table of the check matrix; the initial value table of the preceding check matrix is ​​a table that represents the position of the 1 element of the preceding information matrix part every 360 columns, and is as follows:

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