DATA PROCESSING DEVICE AND DATA PROCESSING METHOD

• US 20160197625A1
• Filed: 09/12/2014
• Published: 07/07/2016
• Est. Priority Date: 09/26/2013
• Status: Abandoned Application

• Current Assignee: Saturn Licensing LLC (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: SHINOHARA, Yuji, YAMAMOTO, Makiko
• Application Number:
  US14/916,505
• Publication Number:
  US 20160197625A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H03M 13/1102 Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
• CPC Class Codes: H03M 13/1165 QC-LDPC codes as defined for the digital video broadcasting [DVB] specifications, e.g. DVB-Satellite [DVB-S2]
• CPC Class Codes: H03M 13/152 Bose-Chaudhuri-Hocquenghem [BCH] codes
• CPC Class Codes: H03M 13/255 with Low Density Parity Check [LDPC] codes
• CPC Class Codes: H03M 13/271 Row-column interleaver with permutations, e.g. block interleaving with inter-row, inter-column, intra-row or intra-column permutations
• CPC Class Codes: H03M 13/2778 Interleaver using block-wise interleaving, e.g. the interleaving matrix is sub-divided into sub-matrices and the permutation is performed in blocks of sub-matrices
• CPC Class Codes: H03M 13/2792 Interleaver wherein interleaving is performed jointly with another technique such as puncturing, multiplexing or routing
• CPC Class Codes: H03M 13/2906 using block codes H03M13/2957 takes precedence
• CPC Class Codes: H03M 13/616 Matrix operations, especially for generator matrices or check matrices, e.g. column or row permutations
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint

Abstract

The present technology relates to a data processing device and a data processing method that make it possible to ensure good communication quality in a data transmission using LDPC codes. In group-wise interleave, an LDPC code whose code length is 16200 bits and code rate is 10/15, 11/15, 12/15, or 13/15 is interleaved in a 360-bit group unit. In group-wise deinterleave, a sequence of the LDPC code after group-wise interleave obtained from data transmitted from a transmitting device to the original sequence. The present technology can be applied, for example, to data transmission or the like using the LDPC codes.

Claims

1. A data processing device, comprising:

a group-wise interleave unit of performing group-wise interleave of interleaving in a 360-bit group unit an LDPC code whose code length is 16200 bits and code rate is 10/15, 11/15, 12/15 or 13/15,

the (i+1)th bit group from the beginning of the LDPC code of the 16200 bits being as a bit group i, and in the group-wise interleave, a sequence of bit group 0 to 44 of the 16200 bits of the LDPC code being interleaved into the following sequence of the bit group;

6, 14, 24, 36, 30, 12, 33, 16, 37, 20, 21, 3, 11, 26, 34, 5, 7, 0, 1, 18, 2, 22, 19, 9, 32, 28, 27, 23, 42, 15, 13, 17, 35, 25, 8, 29, 38, 40, 10, 44, 31, 4, 43, 39, 41.

2. The data processing device according to claim 1, further comprising:

a mapping unit of mapping the LDPC code onto any of 64 signal points defined by a modulation scheme in a 6 bits unit.

3. The data processing device, according to claim 1, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 10/15,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

4. The data processing device, according to claim 1, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 11/15,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

5. The data processing device, according to claim 1, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 1215,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

6. The data processing device, according to claim 1, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 13/15,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

7. A data processing method, comprising:

a step of group-wise interleaving, which group-wise interleaves an LDPC code whose code length is 16200 bits and code rate is 10/15, 11/15, 12/15 or 13/15 in a 360-bit group unit,

the (i+1)th bit group from the beginning of the LDPC code of the 16200 bits being as a bit group i, and in the group-wise interleave, a sequence of bit group 0 to 44 of the 16200 bits of the LDPC code being interleaved into the following sequence of the bit group;

6, 14, 24, 36, 30, 12, 33, 16, 37, 20, 21, 3, 11, 26, 34, 5, 7, 0, 1, 18, 2, 22, 19, 9, 32, 28, 27, 23, 42, 15, 13, 17, 35, 25, 8, 29, 38, 40, 10, 44, 31, 4, 43, 39, 41.

8. A data processing device, comprising:

a group-wise interleave unit of performing group-wise interleave of interleaving in a 360-bit group unit an LDPC code whose code length is 16200 bits and code rate is 10/15, 11/15, 12/15 or 13/15, and

of returning a sequence of the LDPC code after the group-wise interleave obtained from data transmitted from a transmitting device to the original sequence,

the (i+1)th bit group from the beginning of the LDPC code of the 16200 bits being as a bit group i, and

in the group-wise interleave, a sequence of bit group 0 to 44 of the 16200 bits of the LDPC code being interleaved into the following sequence of the bit group;

6, 14, 24, 36, 30, 12, 33, 16, 37, 20, 21, 3, 11, 26, 34, 5, 7, 0, 1, 18, 2, 22, 19, 9, 32, 28, 27, 23, 42, 15, 13, 17, 35, 25, 8, 29, 38, 40, 10, 44, 31, 4, 43, 39, 41.

9. The data processing device according to claim 8, further comprising:

a demapping unit of demapping the mapped data obtained from the data transmitted from the transmitting device further comprising a mapping unit of mapping the LDPC code onto any of 64 signal points defined by a modulation scheme in a 6 bits unit.

10. The data processing device, according to claim 8, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 10/15, and

a decoder, which decodes the LDPC code provided from the data transmitted from the transmitting device,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

11. The data processing device, according to claim 8, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 11/15, and

a decoder, which decodes the LDPC code provided from the data transmitted from the transmitting device,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

12. The data processing device, according to claim 8, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 12/15, and

a decoder, which decodes the LDPC code provided from the data transmitted from the transmitting device,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

13. The data processing device, according to claim 8, further comprising:

an encoder, which performs LDPC encoding based on a parity check matrix of an LDPC code whose code length is 16200 bits and code rate is 13/15, and

a decoder, which decodes the LDPC code provided from the data transmitted from the transmitting device,

the LDPC code including information bits and parity bits,

the parity check matrix including an information matrix part corresponding to the information bits and a parity matrix part corresponding to the parity bits,

the information matrix part being represented by a parity check matrix initial value table, and

the parity check matrix initial value table being a table indicating a position of an element 1 of the information matrix part for each 360 columns as

14. A data processing method, comprising:

a step of group-wise deinterleaving of returning a sequence of the LDPC code after group-wise interleave obtained from data transmitted from a transmitting device to the original sequence, the transmitting device comprising;

a group-wise interleave unit of performing group-wise interleave of interleaving in a 360-bit group unit an LDPC code whose code length is 16200 bits and code rate is 10/15, 11/15, 12/15 or 13/15,

the (i+1)th bit group from the beginning of the LDPC code of the 16200 bits being as a bit group i, and in the group-wise interleave, a sequence of bit group 0 to 44 of the 16200 bits of the LDPC code being interleaved into the following sequence of the bit group;

6, 14, 24, 36, 30, 12, 33, 16, 37, 20, 21, 3, 11, 26, 34, 5, 7, 0, 1, 18, 2, 22, 19, 9, 32, 28, 27, 23, 42, 15, 13, 17, 35, 25, 8, 29, 38, 40, 10, 44, 31, 4, 43, 39, 41.