Data processing device and data processing method

Abstract

The present technology relates to a data processing device and a data processing method which can ensure high communication quality in data transmission using LDPC codes. In group-wise interleaving, an LDPC code having a code length N of 64800 bits and a coding rate r of 9/15 is interleaved in a unit of a bit group of 360 bits. In group-wise deinterleaving, a sequence of bit groups of the LDPC code which has been subjected to the group-wise interleaving is returned to an original sequence. The present technology can be applied to, for example, a case in which data transmission is performed using LDPC codes.

1 . (canceled) 
     
     
         2 . A data processing method comprising:
 a coding step of performing LDPC coding on the basis of a parity check matrix of an LDPC code having a code length N of 64800 bits and a coding rater of 9/15;   a group-wise interleaving step of performing group-wise interleaving which interleaves the LDPC code in a unit of a bit group of 360 bits; and   a mapping step of mapping the LDPC code to any one of four signal points which are determined by a modulation method in a unit of 2 bits,   wherein, in the group-wise interleaving, an (i+1)-th bit group from a head of the LDPC code is set as a bit group i and a sequence of bit groups 0 to 179 of the 64800-bit LDPC code is interleaved into a sequence of the following bit groups,   0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179   the LDPC code includes information bits and parity bits,   the parity check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits,   the information matrix portion is represented by a parity check matrix initial value table, and   the parity check matrix initial value table indicates positions of elements “1” in the information matrix portion for every 360 columns and includes the following,   113 1557 3316 5680 6241 10407 13404 13947 14040 14353 15522 15698 16079 17363 19374 19543 20530 22833 24339   271 1361 6236 7006 7307 7333 12768 15441 15568 17923 18341 20321 21502 22023 23938 25351 25590 25876 25910   73 605 872 4008 6279 7653 10346 10799 12482 12935 13604 15909 16526 19782 20506 22804 23629 24859 25600   1445 1690 4304 4851 8919 9176 9252 13783 16076 16675 17274 18806 18882 20819 21958 22451 23869 23999 24177   1290 2337 5661 6371 8996 10102 10941 11360 12242 14918 16808 20571 23374 24046 25045 25060 25662 25783 25913   28 42 1926 3421 3503 8558 9453 10168 15820 17473 19571 19685 22790 23336 23367 23890 24061 25657 25680   0 1709 4041 4932 5968 7123 8430 9564 10596 11026 14761 19484 20762 20858 23803 24016 24795 25853 25863   29 1625 6500 6609 16831 18517 18568 18738 19387 20159 20544 21603 21941 24137 24269 24416 24803 25154 25395   55 66 871 3700 11426 13221 15001 16367 17601 18380 22796 23488 23938 25476 25635 25678 25807 25857 25872   1 19 5958 8548 8860 11489 16845 18450 18469 19496 20190 23173 25262 25566 25668 25679 25858 25888 25915   7520 7690 8855 9183 14654 16695 17121 17854 18083 18428 19633 20470 20736 21720 22335 23273 25083 25293 25403   48 58 410 1299 3786 10668 18523 18963 20864 22106 22308 23033 23107 23128 23990 24286 24409 24595 25802   12 51 3894 6539 8276 10885 11644 12777 13427 14039 15954 17078 19053 20537 22863 24521 25087 25463 25838   3509 8748 9581 11509 15884 16230 17583 19264 20900 21001 21310 22547 22756 22959 24768 24814 25594 25626 25880   21 29 69 1448 2386 4601 6626 6667 10242 13141 13852 14137 18640 19951 22449 23454 24431 25512 25814   18 53 7890 9934 10063 16728 19040 19809 20825 21522 21800 23582 24556 25031 25547 25562 25733 25789 25906   4096 4582 5766 5894 6517 10027 12182 13247 15207 17041 18958 20133 20503 22228 24332 24613 25689 25855 25883   0 25 819 5539 7076 7536 7695 9532 13668 15051 17683 19665 20253 21996 24136 24890 25758 25784 25807   34 40 44 4215 6076 7427 7965 8777 11017 15593 19542 22202 22973 23397 23423 24418 24873 25107 25644   1595 6216 22850 25439   1562 15172 19517 22362   7508 12879 24324 24496   6298 15819 16757 18721   11173 15175 19966 21195   59 13505 16941 23793   2267 4830 12023 20587   8827 9278 13072 16664   14419 17463 23398 25348   6112 16534 20423 22698   493 8914 21103 24799   6896 12761 13206 25873   2 1380 12322 21701   11600 21306 25753 25790   8421 13076 14271 15401   9630 14112 19017 20955   212 13932 21781 25824   5961 9110 16654 19636   58 5434 9936 12770   6575 11433 19798   2731 7338 20926   14253 18463 25404   21791 24805 25869   2 11646 15850   6075 8586 23819   18435 22093 24852   2103 2368 11704   10925 17402 18232   9062 25061 25674   18497 20853 23404   18606 19364 19551   7 1022 25543   6744 15481 25868   9081 17305 25164   8 23701 25883   9680 19955 22848   56 4564 19121   5595 15086 25892   3174 17127 23183   19397 19817 20275   12561 24571 25825   7111 9889 25865   19104 20189 21851   549 9686 25548   6586 20325 25906   3224 20710 21637   641 15215 25754   13484 23729 25818   2043 7493 24246   16860 25230 25768   22047 24200 24902   9391 18040 19499   7855 24336 25069   23834 25570 25852   1977 8800 25756   6671 21772 25859   3279 6710 24444   24099 25117 25820   5553 12306 25915   48 11107 23907   10832 11974 25773   2223 17905 25484   16782 17135 20446   475 2861 3457   16218 22449 24362   11716 22200 25897   8315 15009 22633   13 20480 25852   12352 18658 25687   3681 14794 23703   30 24531 25846   4103 22077 24107   23837 25622 25812   3627 13387 25839   908 5367 19388   0 6894 25795   20322 23546 25181   8178 25260 25437   2449 13244 22565   31 18928 22741   1312 5134 14838   6085 13937 24220   66 14633 25670   47 22512 25472   8867 24704 25279   6742 21623 22745   147 9948 24178   8522 24261 24307   19202 22406 24609.   
     
     
         3 . A data processing device comprising:
 a group-wise deinterleaving unit that returns a sequence of an LDPC code, which has been subjected to group-wise interleaving and is obtained from data transmitted from a transmitting device, to an original sequence,   wherein the transmitting device includes:   a coding unit that performs LDPC coding on the basis of a parity check matrix of the LDPC code having a code length N of 64800 bits and a coding rate r of 9/15;   a group-wise interleaving unit that performs the group-wise interleaving which interleaves the LDPC code in a unit of a bit group of 360 bits; and   a mapping unit that maps the LDPC code to any one of four signal points which are determined by a modulation method in a unit of 2 bits,   in the group-wise interleaving, an (i+1)-th bit group from a head of the LDPC code is set as a bit group i and a sequence of bit groups 0 to 179 of the 64800-bit LDPC code is interleaved into a sequence of the following bit groups,   0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179   the LDPC code includes information bits and parity bits,   the parity check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits, the information matrix portion is represented by a parity check matrix initial value table, and   the parity check matrix initial value table indicates positions of elements “1” in the information matrix portion for every 360 columns and includes the following,   113 1557 3316 5680 6241 10407 13404 13947 14040 14353 15522 15698 16079 17363 19374 19543 20530 22833 24339   271 1361 6236 7006 7307 7333 12768 15441 15568 17923 18341 20321 21502 22023 23938 25351 25590 25876 25910   73 605 872 4008 6279 7653 10346 10799 12482 12935 13604 15909 16526 19782 20506 22804 23629 24859 25600   1445 1690 4304 4851 8919 9176 9252 13783 16076 16675 17274 18806 18882 20819 21958 22451 23869 23999 24177   1290 2337 5661 6371 8996 10102 10941 11360 12242 14918 16808 20571 23374 24046 25045 25060 25662 25783 25913   28 42 1926 3421 3503 8558 9453 10168 15820 17473 19571 19685 22790 23336 23367 23890 24061 25657 25680   0 1709 4041 4932 5968 7123 8430 9564 10596 11026 14761 19484 20762 20858 23803 24016 24795 25853 25863   29 1625 6500 6609 16831 18517 18568 18738 19387 20159 20544 21603 21941 24137 24269 24416 24803 25154 25395   55 66 871 3700 11426 13221 15001 16367 17601 18380 22796 23488 23938 25476 25635 25678 25807 25857 25872   1 19 5958 8548 8860 11489 16845 18450 18469 19496 20190 23173 25262 25566 25668 25679 25858 25888 25915   7520 7690 8855 9183 14654 16695 17121 17854 18083 18428 19633 20470 20736 21720 22335 23273 25083 25293 25403   48 58 410 1299 3786 10668 18523 18963 20864 22106 22308 23033 23107 23128 23990 24286 24409 24595 25802   12 51 3894 6539 8276 10885 11644 12777 13427 14039 15954 17078 19053 20537 22863 24521 25087 25463 25838   3509 8748 9581 11509 15884 16230 17583 19264 20900 21001 21310 22547 22756 22959 24768 24814 25594 25626 25880   21 29 69 1448 2386 4601 6626 6667 10242 13141 13852 14137 18640 19951 22449 23454 24431 25512 25814   18 53 7890 9934 10063 16728 19040 19809 20825 21522 21800 23582 24556 25031 25547 25562 25733 25789 25906   4096 4582 5766 5894 6517 10027 12182 13247 15207 17041 18958 20133 20503 22228 24332 24613 25689 25855 25883   0 25 819 5539 7076 7536 7695 9532 13668 15051 17683 19665 20253 21996 24136 24890 25758 25784 25807   34 40 44 4215 6076 7427 7965 8777 11017 15593 19542 22202 22973 23397 23423 24418 24873 25107 25644   1595 6216 22850 25439   1562 15172 19517 22362   7508 12879 24324 24496   6298 15819 16757 18721   11173 15175 19966 21195   59 13505 16941 23793   2267 4830 12023 20587   8827 9278 13072 16664   14419 17463 23398 25348   6112 16534 20423 22698   493 8914 21103 24799   6896 12761 13206 25873   2 1380 12322 21701   11600 21306 25753 25790   8421 13076 14271 15401   9630 14112 19017 20955   212 13932 21781 25824   5961 9110 16654 19636   58 5434 9936 12770   6575 11433 19798   2731 7338 20926   14253 18463 25404   21791 24805 25869   2 11646 15850   6075 8586 23819   18435 22093 24852   2103 2368 11704   10925 17402 18232   9062 25061 25674   18497 20853 23404   18606 19364 19551   7 1022 25543   6744 15481 25868   9081 17305 25164   8 23701 25883   9680 19955 22848   56 4564 19121   5595 15086 25892   3174 17127 23183   19397 19817 20275   12561 24571 25825   7111 9889 25865   19104 20189 21851   549 9686 25548   6586 20325 25906   3224 20710 21637   641 15215 25754   13484 23729 25818   2043 7493 24246   16860 25230 25768   22047 24200 24902   9391 18040 19499   7855 24336 25069   23834 25570 25852   1977 8800 25756   6671 21772 25859   3279 6710 24444   24099 25117 25820   5553 12306 25915   48 11107 23907   10832 11974 25773   2223 17905 25484   16782 17135 20446   475 2861 3457   16218 22449 24362   11716 22200 25897   8315 15009 22633   13 20480 25852   12352 18658 25687   3681 14794 23703   30 24531 25846   4103 22077 24107   23837 25622 25812   3627 13387 25839   908 5367 19388   0 6894 25795   20322 23546 25181   8178 25260 25437   2449 13244 22565   31 18928 22741   1312 5134 14838   6085 13937 24220   66 14633 25670   47 22512 25472   8867 24704 25279   6742 21623 22745   147 9948 24178   8522 24261 24307   19202 22406 24609.   
     
     
         4 . A data processing method comprising:
 a group-wise deinterleaving step of returning a sequence of an LDPC code, which has been subjected to group-wise interleaving and is obtained from data transmitted from a transmitting device, to an original sequence,   wherein the transmitting device includes:   a coding unit that performs LDPC coding on the basis of a parity check matrix of the LDPC code having a code length N of 64800 bits and a coding rate r of 9/15;   a group-wise interleaving unit that performs the group-wise interleaving which interleaves the LDPC code in a unit of a bit group of 360 bits; and   a mapping unit that maps the LDPC code to any one of four signal points which are determined by a modulation method in a unit of 2 bits,   in the group-wise interleaving, an (i+1)-th bit group from a head of the LDPC code is set as a bit group i and a sequence of bit groups 0 to 179 of the 64800-bit LDPC code is interleaved into a sequence of the following bit groups,   0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 42, 44, 46, 48, 50, 52, 54, 56, 58, 60, 62, 64, 66, 68, 70, 72, 74, 76, 78, 80, 82, 84, 86, 88, 90, 92, 94, 96, 98, 100, 102, 104, 106, 108, 110, 112, 114, 116, 118, 120, 122, 124, 126, 128, 130, 132, 134, 136, 138, 140, 142, 144, 146, 148, 150, 152, 154, 156, 158, 160, 162, 164, 166, 168, 170, 172, 174, 176, 178, 1, 3, 5, 7, 9, 11, 13, 15, 17, 19, 21, 23, 25, 27, 29, 31, 33, 35, 37, 39, 41, 43, 45, 47, 49, 51, 53, 55, 57, 59, 61, 63, 65, 67, 69, 71, 73, 75, 77, 79, 81, 83, 85, 87, 89, 91, 93, 95, 97, 99, 101, 103, 105, 107, 109, 111, 113, 115, 117, 119, 121, 123, 125, 127, 129, 131, 133, 135, 137, 139, 141, 143, 145, 147, 149, 151, 153, 155, 157, 159, 161, 163, 165, 167, 169, 171, 173, 175, 177, 179   the LDPC code includes information bits and parity bits,   the parity check matrix includes an information matrix portion corresponding to the information bits and a parity matrix portion corresponding to the parity bits,   the information matrix portion is represented by a parity check matrix initial value table, and   the parity check matrix initial value table indicates positions of elements “1” in the information matrix portion for every 360 columns and includes the following,   113 1557 3316 5680 6241 10407 13404 13947 14040 14353 15522 15698 16079 17363 19374 19543 20530 22833 24339   271 1361 6236 7006 7307 7333 12768 15441 15568 17923 18341 20321 21502 22023 23938 25351 25590 25876 25910   73 605 872 4008 6279 7653 10346 10799 12482 12935 13604 15909 16526 19782 20506 22804 23629 24859 25600   1445 1690 4304 4851 8919 9176 9252 13783 16076 16675 17274 18806 18882 20819 21958 22451 23869 23999 24177   1290 2337 5661 6371 8996 10102 10941 11360 12242 14918 16808 20571 23374 24046 25045 25060 25662 25783 25913   28 42 1926 3421 3503 8558 9453 10168 15820 17473 19571 19685 22790 23336 23367 23890 24061 25657 25680   0 1709 4041 4932 5968 7123 8430 9564 10596 11026 14761 19484 20762 20858 23803 24016 24795 25853 25863   29 1625 6500 6609 16831 18517 18568 18738 19387 20159 20544 21603 21941 24137 24269 24416 24803 25154 25395   55 66 871 3700 11426 13221 15001 16367 17601 18380 22796 23488 23938 25476 25635 25678 25807 25857 25872   1 19 5958 8548 8860 11489 16845 18450 18469 19496 20190 23173 25262 25566 25668 25679 25858 25888 25915   7520 7690 8855 9183 14654 16695 17121 17854 18083 18428 19633 20470 20736 21720 22335 23273 25083 25293 25403   48 58 410 1299 3786 10668 18523 18963 20864 22106 22308 23033 23107 23128 23990 24286 24409 24595 25802   12 51 3894 6539 8276 10885 11644 12777 13427 14039 15954 17078 19053 20537 22863 24521 25087 25463 25838   3509 8748 9581 11509 15884 16230 17583 19264 20900 21001 21310 22547 22756 22959 24768 24814 25594 25626 25880   21 29 69 1448 2386 4601 6626 6667 10242 13141 13852 14137 18640 19951 22449 23454 24431 25512 25814   18 53 7890 9934 10063 16728 19040 19809 20825 21522 21800 23582 24556 25031 25547 25562 25733 25789 25906   4096 4582 5766 5894 6517 10027 12182 13247 15207 17041 18958 20133 20503 22228 24332 24613 25689 25855 25883   0 25 819 5539 7076 7536 7695 9532 13668 15051 17683 19665 20253 21996 24136 24890 25758 25784 25807   34 40 44 4215 6076 7427 7965 8777 11017 15593 19542 22202 22973 23397 23423 24418 24873 25107 25644   1595 6216 22850 25439   1562 15172 19517 22362   7508 12879 24324 24496   6298 15819 16757 18721   11173 15175 19966 21195   59 13505 16941 23793   2267 4830 12023 20587   8827 9278 13072 16664   14419 17463 23398 25348   6112 16534 20423 22698   493 8914 21103 24799   6896 12761 13206 25873   2 1380 12322 21701   11600 21306 25753 25790   8421 13076 14271 15401   9630 14112 19017 20955   212 13932 21781 25824   5961 9110 16654 19636   58 5434 9936 12770   6575 11433 19798   2731 7338 20926   14253 18463 25404   21791 24805 25869   2 11646 15850   6075 8586 23819   18435 22093 24852   2103 2368 11704   10925 17402 18232   9062 25061 25674   18497 20853 23404   18606 19364 19551   7 1022 25543   6744 15481 25868   9081 17305 25164   8 23701 25883   9680 19955 22848   56 4564 19121   5595 15086 25892   3174 17127 23183   193 97 19817 20275   12561 24571 25825   7111 9889 25865   19104 20189 21851   549 9686 25548   6586 20325 25906   3224 20710 21637   641 15215 25754   13484 23729 25818   2043 7493 24246   16860 25230 25768   22047 24200 24902   9391 18040 19499   7855 24336 25069   23834 25570 25852   1977 8800 25756   6671 21772 25859   3279 6710 24444   24099 25117 25820   5553 12306 25915   48 11107 23907   10832 11974 25773   2223 17905 25484   16782 17135 20446   475 2861 3457   16218 22449 24362   11716 22200 25897   8315 15009 22633   13 20480 25852   12352 18658 25687   3681 14794 23703   30 24531 25846   4103 22077 24107   23837 25622 25812   3627 13387 25839   908 5367 19388   0 6894 25795   20322 23546 25181   8178 25260 25437   2449 13244 22565   31 18928 22741   1312 5134 14838   6085 13937 24220   66 14633 25670   47 22512 25472   8867 24704 25279   6742 21623 22745   147 9948 24178   8522 24261 24307   19202 22406 24609.   
     
     
         5 - 12 . (canceled)