USRE49243EActiveUtilityPatentIndex 63
Data processing device and data processing method
Est. expiryFeb 19, 2034(~7.6 yrs left)· nominal 20-yr term from priority
H03M 13/036H03M 13/271H03M 13/2792H03M 13/1102H03M 13/255H03M 13/6522H04L 27/2626H03M 13/1165H03M 13/2906H03M 13/2778H03M 13/1137H03M 13/152H03M 13/616
63
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Claims
Abstract
In group-wise interleaving, interleaving of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15 is performed in a unit of a bit group of 360 bits. In group-wise deinterleaving, an arrangement of the LDPC code that has undergone group-wise interleaving is returned to an original arrangement. The technology can be applied to a case of transmitting data using the LDPC code. The data processing device and data processing method can ensure excellent communication quality in data transmission using an LDPC code.
Claims
exact text as granted — not AI-modifiedThe invention claimed is:
1. A data processing method comprising:
an encoding step of performing LDPC encoding based on a parity check matrix of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15;
a group-wise interleaving step of performing group-wise interleaving of interleaving the LDPC codein 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 decided using a modulation method in a unit of 2 bits,
wherein, in the group-wise interleaving, setting an i+1-th bit group from a head of the LDPC code as a bit group i, arrangement of bit groups 0 to 179 of the LDPC code of 64800 bits is interleaved into arrangement of bit groups
39, 47, 96, 176, 33, 75, 165, 38, 27, 58, 90, 76, 17, 46, 10, 91, 133, 69, 171, 32, 117, 78, 13, 146, 101, 36, 0, 138, 25, 77, 122, 49, 14, 125, 140, 93, 130, 2, 104, 102, 128, 4, 111, 151, 84, 167, 35, 127, 156, 55, 82, 85, 66, 114, 8, 147, 115, 113, 5, 31, 100, 106, 48, 52, 67, 107, 18, 126, 112, 50, 9, 143, 28, 160, 71, 79, 43, 98, 86, 94, 64, 3, 166, 105, 103, 118, 63, 51, 139, 172, 141, 175, 56, 74, 95, 29, 45, 129, 120, 168, 92, 150, 7, 162, 153, 137, 108, 159, 157, 173, 23, 89, 132, 57, 37, 70, 134, 40, 21, 149, 80, 1, 121, 59, 110, 142, 152, 15, 154, 145, 12, 170, 54, 155, 99, 22, 123, 72, 177, 131, 116, 44, 158, 73, 11, 65, 164, 119, 174, 34, 83, 53, 24, 42, 60, 26, 161, 68, 178, 41, 148, 109, 87, 144, 135, 20, 62, 81, 169, 124, 6, 19, 30, 163, 61, 179, 136, 97, 16, and 88,
wherein the parity check matrix includes
an A matrix which is on an upper left of the parity check matrix having g rows and K columns represented with a predetermined value g and an information length K=N×r of the LDPC code,
a B matrix which has a staircase structure close to a right side of the A matrix having g rows and g columns,
a Z matrix which is a zero matrix close to a right side of the B matrix having g rows and N−K−g columns,
a C matrix which is close to a bottom side of the A matrix and the B matrix having N−K−g rows and K+g columns, and
a D matrix which is a unit matrix close to a right side of the C matrix having N−K−g rows and N—K—g columns,
wherein the predetermined value g is 1440,
wherein the A matrix and the C matrix are expressed using a parity check matrix initial value table, and
wherein the parity check matrix initial value table is a table representing positions of elements of 1 of the A matrix and the C matrix for every 360 columns, the table including
221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833
360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098
544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441
37 596 715 4134 8091 12106 24307 24658 34108 40591 42883
235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752
204 873 890 13550 16570 19774 34012 35249 37655 39885 42890
221 371 514 11984 14972 15690 28827 29069 30531 31018 43121
280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005
223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272
370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039
585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893
164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992
298 511 809 4620 7347 8873 19602 24162 29198 34304 41145
105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575
659 665 668 6458 22130 25972 30697 31074 32048 36078 37129
91 808 953 8015 8988 13492 13987 15979 28355 34509 39698
594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639
506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606
338 356 975 2022 3578 18689 18772 19826 22914 24733 27431
709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644
840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795
1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284
466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540
374 697 984 1654 5870 10883 11684 20294 28888 31612 34031
117 240 635 5093 8673 11323 12456 14145 21397 39619 42559
122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791
595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987
140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235
7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966
48 189 759 12438 14523 16388 23178 27315 28656 29111 29694
285 387 410 4294 4467 5949 25386 27898 34880 41169 42614
474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322
1075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151
161 396 427 5944 17281 22201 25218 30143 35566 38261 42513
233 247 694 1446 3180 3507 9069 20764 21940 33422 39358
271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924
8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863
1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684
391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593
55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241
110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630
360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663
535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759
526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552
336 785 875 7530 13062 13075 18925 27963 28703 33688 36502
36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783
214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479
1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048
26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649
127 294 437 4029 8585 9647 11904 24115 28514 36893 39722
748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949
96 638 743 9806 12101 17751 22732 24937 32007 32594 38504
649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173
401 518 984 7372 12438 12582 18704 35874 39420 39503 39790
10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955
405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838
50 584 851 9720 11919 22544 22545 25851 35567 41587 41876
911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671
441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952
510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479
4969 5223 17117 21950 22144 24043 27151 39809
11452 13622 18918 19670 23995 32647 37200 37399
6351 6426 13185 13973 16699 22524 31070 31916
4098 10617 14854 18004 28580 36158 37500 38552.
2. A data processing receiving method, the receiving method comprising:
receiving, in a receiving device, a digital television broadcast signal including a mapped group-wise interleaved low density parity check (LDPC) code word;
a group-wise deinterleaving step of returning an arrangement of the LDPC code that has undergone group-wise interleaving obtained from data transmitted from a transmitting device to an original arrangement, the transmitting device includingdemapping the mapped group-wise interleaved LDPC code word to obtain a group-wise interleaved LDPC code word, wherein each unit of 2 bits of the group-wise interleaved LDPC code word is mapped to one of 4 signal points of a modulation scheme; an encoding unit configured to perform LDPC encoding based ongroup-wise deinterleaving the group-wise interleaved LDPC code word in units of bit groups of 360 bits to obtain an LDPC code word, decoding the LDPC code word, and performing error correction using the decoded LDPC code word for presentation of the digital television broadcast signal, wherein input bits of data to be transmitted in the digital television broadcast signal by a transmitting device are LDPC encoded according to a parity check matrix initial value table of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15 to generate the LDPC code word, the LDPC code enabling error correction processing to correct errors generated in a transmission path of the digital television broadscast signal, a group-wise interleaving unit configured to perform group-wise interleaving of interleaving the LDPC code in a unit of a bit group of 360 bits, and a mapping unit configured to map the LDPC code to any one of four signal points decided using a modulation method in a unit of 2 bits, wherein, in the group-wise interleaving, setting an i+1-th bit group from a head of the LDPC code as a bit group i, arrangement of bit groups 0 to 179 of the LDPC code of 64800 bits is interleaved into arrangement of bit groups
39, 47, 96, 176, 33, 75, 165, 38, 27, 58, 90, 76, 17, 46, 10, 91, 133, 69, 171, 32, 117, 78, 13, 146, 101, 36, 0, 138, 25, 77, 122, 49, 14, 125, 140, 93, 130, 2, 104, 102, 128, 4, 111, 151, 84, 167, 35, 127, 156, 55, 82, 85, 66, 114, 8, 147, 115, 113, 5, 31, 100, 106, 48, 52, 67, 107, 18, 126, 112, 50, 9, 143, 28, 160, 71, 79, 43, 98, 86, 94, 64, 3, 166, 105, 103, 118, 63, 51, 139, 172, 141, 175, 56, 74, 95, 29, 45, 129, 120, 168, 92, 150, 7, 162, 153, 137, 108, 159, 157, 173, 23, 89, 132, 57, 37, 70, 134, 40, 21, 149, 80, 1, 121, 59, 110, 142, 152, 15, 154, 145, 12, 170, 54, 155, 99, 22, 123, 72, 177, 131, 116, 44, 158, 73, 11, 65, 164, 119, 174, 34, 83, 53, 24, 42, 60, 26, 161, 68, 178, 41, 148, 109, 87, 144, 135, 20, 62, 81, 169, 124, 6, 19, 30, 163, 61, 179, 136, 97, 16, and 88,
wherein the parity check matrix includes
an A matrix which is on an upper left of the parity check matrix having g rows and K columns represented with a predetermined value g and an information length K=N×r of the LDPC code,
a B matrix which has a staircase structure close to a right side of the A matrix having g rows and g columns,
a Z matrix which is a zero matrix close to a right side of the B matrix having g rows and N−K−g columns,
a C matrix which is close to a bottom side of the A matrix and the B matrix having N−K−g rows and K+g columns, and
a D matrix which is a unit matrix close to a right side of the C matrix having N−K−g rows and N−K−g columns,
wherein the predetermined value g is 1440,
wherein the A matrix and the C matrix are expressed using a parity check matrix initial value table, and
wherein the parity check matrix initial value table is a table representing positions of elements of 1 of the A matrix and the C matrix for every 360 columns, the table including
the LDPC code word includes information bits and parity bits, the parity bits being processed by the receiving device to recover information bits corrupted by transmission path errors,
the parity check matrix initial value table of the LDPC code according to which the input bits are LDPC encoded is as follows,
221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833
360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098
544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441
37 596 715 4134 8091 12106 24307 24658 34108 40591 42883
235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752
204 873 890 13550 16570 19774 34012 35249 37655 39885 42890
221 371 514 11984 14972 15690 28827 29069 30531 31018 43121
280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005
223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272
370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039
585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893
164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992
298 511 809 4620 7347 8873 19602 24162 29198 34304 41145
105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575
659 665 668 6458 22130 25972 30697 31074 32048 36078 37129
91 808 953 8015 8988 13492 13987 15979 28355 34509 39698
594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639
506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606
338 356 975 2022 3578 18689 18772 19826 22914 24733 27431
709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644
840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795
1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284
466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540
374 697 984 1654 5870 10883 11684 20294 28888 31612 34031
117 240 635 5093 8673 11323 12456 14145 21397 39619 42559
122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791
595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987
140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235
7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966
48 189 759 12438 14523 16388 23178 27315 28656 29111 29694
285 387 410 4294 4467 5949 25386 27898 34880 41169 42614
474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322
1075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151
161 396 427 5944 17281 22201 25218 30143 35566 38261 42513
233 247 694 1446 3180 3507 9069 20764 21940 33422 39358
271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924
8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863
1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684
391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593
55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241
110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630
360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663
535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759
526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552
336 785 875 7530 13062 13075 18925 27963 28703 33688 36502
36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783
214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479
1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048
26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649
127 294 437 4029 8585 9647 11904 24115 28514 36893 39722
748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949
96 638 743 9806 12101 17751 22732 24937 32007 32594 38504
649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173
401 518 984 7372 12438 12582 18704 35874 39420 39503 39790
10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955
405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838
50 584 851 9720 11919 22544 22545 25851 35567 41587 41876
911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671
441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952
510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479
4969 5223 17117 21950 22144 24043 27151 39809
11452 13622 18918 19670 23995 32647 37200 37399
6351 6426 13185 13973 16699 22524 31070 31916
4098 10617 14854 18004 28580 36158 37500 38552,
the LDPC code word is group-wise interleaved in units of bit groups of 360 bits to generate the group-wise interleaved LDPC code word such that
when an (i+1)-th bit group from a head of the generated LDPC code word is indicated by a bit group i, a sequence of bit groups 0 to 179 of the generated LDPC code word of 64800 bits is interleaved into a following sequence of bit groups
39, 47, 96, 176, 33, 75, 165, 38, 27, 58, 90, 76, 17, 46, 10, 91, 133, 69, 171, 32, 117, 78, 13, 146, 101, 36, 0, 138, 25, 77, 122, 49, 14, 125, 140, 93, 130, 2, 104, 102, 128, 4, 111, 151, 84, 167, 35, 127, 156, 55, 82, 85, 66, 114, 8, 147, 115, 113, 5, 31, 100, 106, 48, 52, 67, 107, 18, 126, 112, 50, 9, 143, 28, 160, 71, 79, 43, 98, 86, 94, 64, 3, 166, 105, 103, 118, 63, 51, 139, 172, 141, 175, 56, 74, 95, 29, 45, 129, 120, 168, 92, 150, 7, 162, 153, 137, 108, 159, 157, 173, 23, 89, 132, 57, 37, 70, 134, 40, 21, 149, 80, 1, 121, 59, 110, 142, 152, 15, 154, 145, 12, 170, 54, 155, 99, 22, 123, 72, 177, 131, 116, 44, 158, 73, 11, 65, 164, 119, 174, 34, 83, 53, 24, 42, 60, 26, 161, 68, 178, 41, 148, 109, 87, 144, 135, 20, 62, 81, 169, 124, 6, 19, 30, 163, 61, 179, 136, 97, 16, and 88; and
the group-wise interleaved LDPC code word is mapped to one of the 4 signal points in the modulation scheme in units of 2 bits.
3. A data processing method comprising:
an encoding step of performing LDPC encoding based on a parity check matrix of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15;
a group-wise interleaving step of performing group-wise interleaving of interleaving the LDPC codein a unit of a bit group of 360 bits; and
a mapping step of mapping the LDPC code to any one of 16 signal points decided using a modulation method in a unit of 4 bits,
wherein, in the group-wise interleaving, setting an i+1-th bit group from a head of the LDPC code as a bit group i, arrangement of bit groups 0 to 179 of the LDPC code of 64800 bits is interleaved into arrangement of bit groups
6, 14, 1, 127, 161, 177, 75, 123, 62, 103, 17, 18, 167, 88, 27, 34, 8, 110, 7, 78, 94, 44, 45, 166, 149, 61, 163, 145, 155, 157, 82, 130, 70, 92, 151, 139, 160, 133, 26, 2, 79, 15, 95, 122, 126, 178, 101, 24, 138, 146, 179, 30, 86, 58, 11, 121, 159, 49, 84, 132, 117, 119, 50, 52, 4, 51, 48, 74, 114, 59, 40, 131, 33, 89, 66, 136, 72, 16, 134, 37, 164, 77, 99, 173, 20, 158, 156, 90, 41, 176, 81, 42, 60, 109, 22, 150, 105, 120, 12, 64, 56, 68, 111, 21, 148, 53, 169, 97, 108, 35, 140, 91, 115, 152, 36, 106, 154, 0, 25, 54, 63, 172, 80, 168, 142, 118, 162, 135, 73, 83, 153, 141, 9, 28, 55, 31, 112, 107, 85, 100, 175, 23, 57, 47, 38, 170, 137, 76, 147, 93, 19, 98, 124, 39, 87, 174, 144, 46, 10, 129, 69, 71, 125, 96, 116, 171, 128, 65, 102, 5, 43, 143, 104, 13, 67, 29, 3, 113, 32, and 165,
wherein the parity check matrix includes
an A matrix which is on an upper left of the parity check matrix having g rows and K columns represented with a predetermined value g and an information length K=N×r of the LDPC code,
a B matrix which has a staircase structure close to a right side of the A matrix having g rows and g columns,
a Z matrix which is a zero matrix close to a right side of the B matrix having g rows and N−K−g columns,
a C matrix which is close to a bottom side of the A matrix and the B matrix having N−K−g rows and K+g columns, and
a D matrix which is a unit matrix close to a right side of the C matrix having N−K−g rows and N−K−g columns,
wherein the predetermined value g is 1440,
wherein the A matrix and the C matrix are expressed using a parity check matrix initial value table, and
wherein the parity check matrix initial value table is a table representing positions of elements of 1 of the A matrix and the C matrix for every 360 columns, the table including
221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833
360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098
544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441
37 596 715 4134 8091 12106 24307 24658 34108 40591 42883
235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752
204 873 890 13550 16570 19774 34012 35249 37655 39885 42890
221 371 514 11984 14972 15690 28827 29069 30531 31018 43121
280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005
223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272
370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039
585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893
164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992
298 511 809 4620 7347 8873 19602 24162 29198 34304 41145
105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575
659 665 668 6458 22130 25972 30697 31074 32048 36078 37129
91 808 953 8015 8988 13492 13987 15979 28355 34509 39698
594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639
506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606
338 356 975 2022 3578 18689 18772 19826 22914 24733 27431
709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644
840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795
1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284
466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540
374 697 984 1654 5870 10883 11684 20294 28888 31612 34031
117 240 635 5093 8673 11323 12456 14145 21397 39619 42559
122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791
595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987
140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235
7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966
48 189 759 12438 14523 16388 23178 27315 28656 29111 29694
285 387 410 4294 4467 5949 25386 27898 34880 41169 42614
474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322
1075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151
161 396 427 5944 17281 22201 25218 30143 35566 38261 42513
233 247 694 1446 3180 3507 9069 20764 21940 33422 39358
271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924
8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863
1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684
391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593
55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241
110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630
360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663
535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759
526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552
336 785 875 7530 13062 13075 18925 27963 28703 33688 36502
36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783
214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479
1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048
26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649
127 294 437 4029 8585 9647 11904 24115 28514 36893 39722
748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949
96 638 743 9806 12101 17751 22732 24937 32007 32594 38504
649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173
401 518 984 7372 12438 12582 18704 35874 39420 39503 39790
10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955
405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838
50 584 851 9720 11919 22544 22545 25851 35567 41587 41876
911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671
441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952
510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479
4969 5223 17117 21950 22144 24043 27151 39809
11452 13622 18918 19670 23995 32647 37200 37399
6351 6426 13185 13973 16699 22524 31070 31916
4098 10617 14854 18004 28580 36158 37500 38552.
4. A data processing method comprising:
a group-wise deinterleaving step of returning an arrangement of the LDPC code that has undergone group-wise interleaving obtained from data transmitted from a transmitting device to an original arrangement, the transmitting device including
an encoding unit configured to perform LDPC encoding based on a parity check matrix of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15,
a group-wise interleaving unit configured to perform group-wise interleaving of interleaving the LDPC codein a unit of a bit group of 360 bits, and
a mapping unit configured to map the LDPC code to any one of 16 signal points decided using a modulation method in a unit of 4 bits,
wherein, in the group-wise interleaving, setting an i+1-th bit group from a head of the LDPC code as a bit group i, arrangement of bit groups 0 to 179 of the LDPC code of 64800 bits is interleaved into arrangement of bit groups
6, 14, 1, 127, 161, 177, 75, 123, 62, 103, 17, 18, 167, 88, 27, 34, 8, 110, 7, 78, 94, 44, 45, 166, 149, 61, 163, 145, 155, 157, 82, 130, 70, 92, 151, 139, 160, 133, 26, 2, 79, 15, 95, 122, 126, 178, 101, 24, 138, 146, 179, 30, 86, 58, 11, 121, 159, 49, 84, 132, 117, 119, 50, 52, 4, 51, 48, 74, 114, 59, 40, 131, 33, 89, 66, 136, 72, 16, 134, 37, 164, 77, 99, 173, 20, 158, 156, 90, 41, 176, 81, 42, 60, 109, 22, 150, 105, 120, 12, 64, 56, 68, 111, 21, 148, 53, 169, 97, 108, 35, 140, 91, 115, 152, 36, 106, 154, 0, 25, 54, 63, 172, 80, 168, 142, 118, 162, 135, 73, 83, 153, 141, 9, 28, 55, 31, 112, 107, 85, 100, 175, 23, 57, 47, 38, 170, 137, 76, 147, 93, 19, 98, 124, 39, 87, 174, 144, 46, 10, 129, 69, 71, 125, 96, 116, 171, 128, 65, 102, 5, 43, 143, 104, 13, 67, 29, 3, 113, 32, and 165,
wherein the parity check matrix includes
an A matrix which is on an upper left of the parity check matrix having g rows and K columns represented with a predetermined value g and an information length K=N×r of the LDPC code,
a B matrix which has a staircase structure close to a right side of the A matrix having g rows and g columns,
a Z matrix which is a zero matrix close to a right side of the B matrix having g rows and N−K−g columns,
a C matrix which is close to a bottom side of the A matrix and the B matrix having N−K−g rows and K+g columns, and
a D matrix which is a unit matrix close to a right side of the C matrix having N−K−g rows and N−K−g columns,
wherein the predetermined value g is 1440,
wherein the A matrix and the C matrix are expressed using a parity check matrix initial value table, and
wherein the parity check matrix initial value table is a table representing positions of elements of 1 of the A matrix and the C matrix for every 360 columns, the table including
221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833
360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098
544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441
37 596 715 4134 8091 12106 24307 24658 34108 40591 42883
235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752
204 873 890 13550 16570 19774 34012 35249 37655 39885 42890
221 371 514 11984 14972 15690 28827 29069 30531 31018 43121
280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005
223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272
370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039
585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893
164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992
298 511 809 4620 7347 8873 19602 24162 29198 34304 41145
105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575
659 665 668 6458 22130 25972 30697 31074 32048 36078 37129
91 808 953 8015 8988 13492 13987 15979 28355 34509 39698
594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639
506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606
338 356 975 2022 3578 18689 18772 19826 22914 24733 27431
709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644
840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795
1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284
466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540
374 697 984 1654 5870 10883 11684 20294 28888 31612 34031
117 240 635 5093 8673 11323 12456 14145 21397 39619 42559
122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791
595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987
140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235
7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966
48 189 759 12438 14523 16388 23178 27315 28656 29111 29694
285 387 410 4294 4467 5949 25386 27898 34880 41169 42614
474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322
1075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151
161 396 427 5944 17281 22201 25218 30143 35566 38261 42513
233 247 694 1446 3180 3507 9069 20764 21940 33422 39358
271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924
8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863
1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684
391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593
55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241
110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630
360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663
535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759
526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552
336 785 875 7530 13062 13075 18925 27963 28703 33688 36502
36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783
214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479
1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048
26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649
127 294 437 4029 8585 9647 11904 24115 28514 36893 39722
748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949
96 638 743 9806 12101 17751 22732 24937 32007 32594 38504
649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173
401 518 984 7372 12438 12582 18704 35874 39420 39503 39790
10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955
405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838
50 584 851 9720 11919 22544 22545 25851 35567 41587 41876
911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671
441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952
510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479
4969 5223 17117 21950 22144 24043 27151 39809
11452 13622 18918 19670 23995 32647 37200 37399
6351 6426 13185 13973 16699 22524 31070 31916
4098 10617 14854 18004 28580 36158 37500 38552.
5. A data processing method comprising:
an encoding step of performing LDPC encoding based on a parity check matrix of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15;
a group-wise interleaving step of performing group-wise interleaving of interleaving the LDPC codein a unit of a bit group of 360 bits; and
a mapping step of mapping the LDPC code to any one of 64 signal points decided using a modulation method in a unit of 6 bits,
wherein, in the group-wise interleaving, setting an i+1-th bit group from a head of the LDPC code as a bit group i, arrangement of bit groups 0 to 179 of the LDPC code of 64800 bits is interleaved into arrangement of bit groups
103, 116, 158, 0, 27, 73, 140, 30, 148, 36, 153, 154, 10, 174, 122, 178, 6, 106, 162, 59, 142, 112, 7, 74, 11, 51, 49, 72, 31, 65, 156, 95, 171, 105, 173, 168, 1, 155, 125, 82, 86, 161, 57, 165, 54, 26, 121, 25, 157, 93, 22, 34, 33, 39, 19, 46, 150, 141, 12, 9, 79, 118, 24, 17, 85, 117, 67, 58, 129, 160, 89, 61, 146, 77, 130, 102, 101, 137, 94, 69, 14, 133, 60, 149, 136, 16, 108, 41, 90, 28, 144, 13, 175, 114, 2, 18, 63, 68, 21, 109, 53, 123, 75, 81, 143, 169, 42, 119, 138, 104, 4, 131, 145, 8, 5, 76, 15, 88, 177, 124, 45, 97, 64, 100, 37, 132, 38, 44, 107, 35, 43, 80, 50, 91, 152, 78, 166, 55, 115, 170, 159, 147, 167, 87, 83, 29, 96, 172, 48, 98, 62, 139, 70, 164, 84, 47, 151, 134, 126, 113, 179, 110, 111, 128, 32, 52, 66, 40, 135, 176, 99, 127, 163, 3, 120, 71, 56, 92, 23, and 20,
wherein the parity check matrix includes
an A matrix which is on an upper left of the parity check matrix having g rows and K columns represented with a predetermined value g and an information length K=N×r of the LDPC code,
a B matrix which has a staircase structure close to a right side of the A matrix having g rows and g columns,
a Z matrix which is a zero matrix close to a right side of the B matrix having g rows and N−K−g columns,
a C matrix which is close to a bottom side of the A matrix and the B matrix having N−K−g rows and K+g columns, and
a D matrix which is a unit matrix close to a right side of the C matrix having N−K−g rows and N−K−g columns,
wherein the predetermined value g is 1440,
wherein the A matrix and the C matrix are expressed using a parity check matrix initial value table, and
wherein the parity check matrix initial value table is a table representing positions of elements of 1 of the A matrix and the C matrix for every 360 columns, the table including
221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833
360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098
544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441
37 596 715 4134 8091 12106 24307 24658 34108 40591 42883
235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752
204 873 890 13550 16570 19774 34012 35249 37655 39885 42890
221 371 514 11984 14972 15690 28827 29069 30531 31018 43121
280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005
223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272
370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039
585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893
164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992
298 511 809 4620 7347 8873 19602 24162 29198 34304 41145
105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575
659 665 668 6458 22130 25972 30697 31074 32048 36078 37129
91 808 953 8015 8988 13492 13987 15979 28355 34509 39698
594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639
506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606
338 356 975 2022 3578 18689 18772 19826 22914 24733 27431
709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644
840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795
1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284
466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540
374 697 984 1654 5870 10883 11684 20294 28888 31612 34031
117 240 635 5093 8673 11323 12456 14145 21397 39619 42559
122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791
595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987
140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235
7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966
48 189 759 12438 14523 16388 23178 27315 28656 29111 29694
285 387 410 4294 4467 5949 25386 27898 34880 41169 42614
474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322
075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151
161 396 427 5944 17281 22201 25218 30143 35566 38261 42513
233 247 694 1446 3180 3507 9069 20764 21940 33422 39358
271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924
8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863
1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684
391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593
55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241
110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630
360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663
535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759
526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552
336 785 875 7530 13062 13075 18925 27963 28703 33688 36502
36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783
214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479
1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048
26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649
127 294 437 4029 8585 9647 11904 24115 28514 36893 39722
748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949
96 638 743 9806 12101 17751 22732 24937 32007 32594 38504
649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173
401 518 984 7372 12438 12582 18704 35874 39420 39503 39790
10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955
405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838
50 584 851 9720 11919 22544 22545 25851 35567 41587 41876
911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671
441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952
510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479
4969 5223 17117 21950 22144 24043 27151 39809
11452 13622 18918 19670 23995 32647 37200 37399
6351 6426 13185 13973 16699 22524 31070 31916
4098 10617 14854 18004 28580 36158 37500 38552.
6. A data processing method comprising:
a group-wise deinterleaving step of returning an arrangement of the LDPC code that has undergone group-wise interleaving obtained from data transmitted from a transmitting device to an original arrangement, the transmitting device including
an encoding unit configured to perform LDPC encoding based on a parity check matrix of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15,
a group-wise interleaving unit configured to perform group-wise interleaving of interleaving the LDPC codein a unit of a bit group of 360 bits, and
a mapping unit configured to map the LDPC code to any one of 64 signal points decided using a modulation method in a unit of 6 bits,
wherein, in the group-wise interleaving, setting an i+1-th bit group from a head of the LDPC code as a bit group i, arrangement of bit groups 0 to 179 of the LDPC code of 64800 bits is interleaved into arrangement of bit groups
103, 116, 158, 0, 27, 73, 140, 30, 148, 36, 153, 154, 10, 174, 122, 178, 6, 106, 162, 59, 142, 112, 7, 74, 11, 51, 49, 72, 31, 65, 156, 95, 171, 105, 173, 168, 1, 155, 125, 82, 86, 161, 57, 165, 54, 26, 121, 25, 157, 93, 22, 34, 33, 39, 19, 46, 150, 141, 12, 9, 79, 118, 24, 17, 85, 117, 67, 58, 129, 160, 89, 61, 146, 77, 130, 102, 101, 137, 94, 69, 14, 133, 60, 149, 136, 16, 108, 41, 90, 28, 144, 13, 175, 114, 2, 18, 63, 68, 21, 109, 53, 123, 75, 81, 143, 169, 42, 119, 138, 104, 4, 131, 145, 8, 5, 76, 15, 88, 177, 124, 45, 97, 64, 100, 37, 132, 38, 44, 107, 35, 43, 80, 50, 91, 152, 78, 166, 55, 115, 170, 159, 147, 167, 87, 83, 29, 96, 172, 48, 98, 62, 139, 70, 164, 84, 47, 151, 134, 126, 113, 179, 110, 111, 128, 32, 52, 66, 40, 135, 176, 99, 127, 163, 3, 120, 71, 56, 92, 23, and 20,
wherein the parity check matrix includes
an A matrix which is on an upper left of the parity check matrix having g rows and K columns represented with a predetermined value g and an information length K=N×r of the LDPC code,
a B matrix which has a staircase structure close to a right side of the A matrix having g rows and g columns,
a Z matrix which is a zero matrix close to a right side of the B matrix having g rows and N−K−g columns,
a C matrix which is close to a bottom side of the A matrix and the B matrix having N−K−g rows and K+g columns, and
a D matrix which is a unit matrix close to a right side of the C matrix having N−K−g rows and N−K−−g N−K−g columns,
wherein the predetermined value g is 1440,
wherein the A matrix and the C matrix are expressed using a parity check matrix initial value table, and
wherein the parity check matrix initial value table is a table representing positions of elements of 1 of the A matrix and the C matrix for every 360 columns, the table including
221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833
360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098
544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441
37 596 715 4134 8091 12106 24307 24658 34108 40591 42883
235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752
204 873 890 13550 16570 19774 34012 35249 37655 39885 42890
221 371 514 11984 14972 15690 28827 29069 30531 31018 43121
280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005
223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272
370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039
585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893
164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992
298 511 809 4620 7347 8873 19602 24162 29198 34304 41145
105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575
659 665 668 6458 22130 25972 30697 31074 32048 36078 37129
91 808 953 8015 8988 13492 13987 15979 28355 34509 39698
594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639
506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606
338 356 975 2022 3578 18689 18772 19826 22914 24733 27431
709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644
840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795
1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284
466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540
374 697 984 1654 5870 10883 11684 20294 28888 31612 34031
117 240 635 5093 8673 11323 12456 14145 21397 39619 42559
122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791
595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987
140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235
7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966
48 189 759 12438 14523 16388 23178 27315 28656 29111 29694
285 387 410 4294 4467 5949 25386 27898 34880 41169 42614
474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322
1075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151
161 396 427 5944 17281 22201 25218 30143 35566 38261 42513
233 247 694 1446 3180 3507 9069 20764 21940 33422 39358
271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924
8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863
1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684
391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593
55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241
110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630
360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663
535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759
526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552
336 785 875 7530 13062 13075 18925 27963 28703 33688 36502
36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783
214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479
1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048
26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649
127 294 437 4029 8585 9647 11904 24115 28514 36893 39722
748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949
96 638 743 9806 12101 17751 22732 24937 32007 32594 38504
649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173
401 518 984 7372 12438 12582 18704 35874 39420 39503 39790
10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955
405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838
50 584 851 9720 11919 22544 22545 25851 35567 41587 41876
911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671
441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952
510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479
4969 5223 17117 21950 22144 24043 27151 39809
11452 13622 18918 19670 23995 32647 37200 37399
6351 6426 13185 13973 16699 22524 31070 31916
4098 10617 14854 18004 28580 36158 37500 38552.
7. The receiving method according to claim 2, wherein the LDPC code word is encoded based on a parity check matrix of the LDPC code.
8. The receiving method according to claim 7, wherein
the parity check matrix includes a B matrix having a staircase structure and a D matrix being a unit matrix, the B matrix having g rows and g columns, the D matrix having N−K−g rows and N−K−g columns, wherein K=N×r, g=1440.
9. The receiving method according to claim 8, wherein the parity check matrix further comprises:
an A matrix, located at an upper left of the parity check matrix, having g rows and K columns, the B matrix located to a right side of the A matrix; and a C matrix, located to a bottom side of the A and B matrixes, having N−K−g rows and K+g columns, the D matrix located to a right side of the C matrix.
10. The receiving method according to claim 9, wherein the parity check matrix further comprises
a Z matrix, located to a right side of the B matrix and to a top side of the D matrix.
11. The receiving method according to claim 9, wherein
the A matrix and the C matrix corresponding to the information bits and the B matrix and the D matrix corresponding to the parity bits, the A matrix and the C matrix being represented by the parity check matrix initial value table, and each row of the parity check matrix initial value table indicates positions of elements “1” in corresponding 360 columns of the A matrix and the C matrix.
12. The receiving method according to claim 11, wherein
a row of the parity check matrix initial value table is represented by i and a length of the parity bits of the LDPC code word is represented by M, a 2+360×(i−1)-th column of the A matrix is obtained by a cyclic shift of a 1+360×(i−1)-th column of the A matrix indicating a position of an element 1 in the parity check matrix initial value table downward by q1=g/360 and a 2+360×(i−1)-th column of the C matrix is obtained by a cyclic shift of a 1+360×(i−1)-th column of the C matrix indicating a position of an element 1 in the parity check matrix initial value table downward by q2=(M−g)/360.
13. A receiving device, the receiving device comprising:
a receiver configured to receive, from a transmitting device, a digital television broadcast signal including a mapped group-wise interleaved low density parity check (LDPC) code word; and a Central Processing Unit (CPU) and a memory storing computer-executable instructions that, when executed by the CPU, cause the CPU to
demap the mapped group-wise interleaved LDPC code word to obtain a group-wise interleaved LDPC code word, wherein each unit of 2 bits of the group-wise interleaved LDPC code word is mapped to one of 4 signal points of a modulation scheme;
group-wise deinterleave the group-wise interleaved LDPC code word in units of bit groups of 360 bits to obtain an LDPC code word;
decode the LDPC code word; and
perform error correction using the decoded LDPC code word for presentation of the digital television broadcast signal, wherein
input bits of data to be transmitted in the digital television broadcast signal are LDPC encoded according to a parity check matrix initial value table of an LDPC code having a code length N of 64800 bits and an encoding rate r of 5/15 to generate the LDPC code word, the LDPC code enabling error correction processing to correct errors generated in a transmission path of the digital television broadcast signal, the LDPC code word includes information bits and parity bits, the parity bits being processed by the receiving device to recover information bits corrupted by transmission path errors, the parity check matrix initial value table of the LDPC code according to which the input bits are LDPC encoded is as follows, 221 1011 1218 4299 7143 8728 11072 15533 17356 33909 36833 360 1210 1375 2313 3493 16822 21373 23588 23656 26267 34098 544 1347 1433 2457 9186 10945 13583 14858 19195 34606 37441 37 596 715 4134 8091 12106 24307 24658 34108 40591 42883 235 398 1204 2075 6742 11670 13512 23231 24784 27915 34752 204 873 890 13550 16570 19774 34012 35249 37655 39885 42890 221 371 514 11984 14972 15690 28827 29069 30531 31018 43121 280 549 1435 1889 3310 10234 11575 15243 20748 30469 36005 223 666 1248 13304 14433 14732 18943 21248 23127 38529 39272 370 819 1065 9461 10319 25294 31958 33542 37458 39681 40039 585 870 1028 5087 5216 12228 16216 16381 16937 27132 27893 164 167 1210 7386 11151 20413 22713 23134 24188 36771 38992 298 511 809 4620 7347 8873 19602 24162 29198 34304 41145 105 830 1212 2415 14759 15440 16361 16748 22123 32684 42575 659 665 668 6458 22130 25972 30697 31074 32048 36078 37129 91 808 953 8015 8988 13492 13987 15979 28355 34509 39698 594 983 1265 3028 4029 9366 11069 11512 27066 40939 41639 506 740 1321 1484 10747 16376 17384 20285 31502 38925 42606 338 356 975 2022 3578 18689 18772 19826 22914 24733 27431 709 1264 1366 4617 8893 25226 27800 29080 30277 37781 39644 840 1179 1338 2973 3541 7043 12712 15005 17149 19910 36795 1009 1267 1380 4919 12679 22889 29638 30987 34637 36232 37284 466 913 1247 1646 3049 5924 9014 20539 34546 35029 36540 374 697 984 1654 5870 10883 11684 20294 28888 31612 34031 117 240 635 5093 8673 11323 12456 14145 21397 39619 42559 122 1265 1427 13528 14282 15241 16852 17227 34723 36836 39791 595 1180 1310 6952 17916 24725 24971 27243 29555 32138 35987 140 470 1017 13222 13253 18462 20806 21117 28673 31598 37235 7 710 1072 8014 10804 13303 14292 16690 26676 36443 41966 48 189 759 12438 14523 16388 23178 27315 28656 29111 29694 285 387 410 4294 4467 5949 25386 27898 34880 41169 42614 474 545 1320 10506 13186 18126 27110 31498 35353 36193 37322 1075 1130 1424 11390 13312 14161 16927 25071 25844 34287 38151 161 396 427 5944 17281 22201 25218 30143 35566 38261 42513 233 247 694 1446 3180 3507 9069 20764 21940 33422 39358 271 508 1013 6271 21760 21858 24887 29808 31099 35475 39924 8 674 1329 3135 5110 14460 28108 28388 31043 31137 31863 1035 1222 1409 8287 16083 24450 24888 29356 30329 37834 39684 391 1090 1128 1866 4095 10643 13121 14499 20056 22195 30593 55 161 1402 6289 6837 8791 17937 21425 26602 30461 37241 110 377 1228 6875 13253 17032 19008 23274 32285 33452 41630 360 638 1355 5933 12593 13533 23377 23881 24586 26040 41663 535 1240 1333 3354 10860 16032 32573 34908 34957 39255 40759 526 936 1321 7992 10260 18527 28248 29356 32636 34666 35552 336 785 875 7530 13062 13075 18925 27963 28703 33688 36502 36 591 1062 1518 3821 7048 11197 17781 19408 22731 24783 214 1145 1223 1546 9475 11170 16061 21273 38688 40051 42479 1136 1226 1423 20227 22573 24951 26462 29586 34915 42441 43048 26 276 1425 6048 7224 7917 8747 27559 28515 35002 37649 127 294 437 4029 8585 9647 11904 24115 28514 36893 39722 748 1093 1403 9536 19305 20468 31049 38667 40502 40720 41949 96 638 743 9806 12101 17751 22732 24937 32007 32594 38504 649 904 1079 2770 3337 9158 20125 24619 32921 33698 35173 401 518 984 7372 12438 12582 18704 35874 39420 39503 39790 10 451 1077 8078 16320 17409 25807 28814 30613 41261 42955 405 592 1178 15936 18418 19585 21966 24219 30637 34536 37838 50 584 851 9720 11919 22544 22545 25851 35567 41587 41876 911 1113 1176 1806 10058 10809 14220 19044 20748 29424 36671 441 550 1135 1956 11254 18699 30249 33099 34587 35243 39952 510 1016 1281 8621 13467 13780 15170 16289 20925 26426 34479 4969 5223 17117 21950 22144 24043 27151 39809 11452 13622 18918 19670 23995 32647 37200 37399 6351 6426 13185 13973 16699 22524 31070 31916 4098 10617 14854 18004 28580 36158 37500 38552, the LDPC code word is group-wise interleaved in units of bit groups of 360 bits to generate the group-wise interleaved LDPC code word such that when an (i+1)-th bit group from a head of the generated LDPC code word is indicated by a bit group i, a sequence of bit groups 0 to 179 of the generated LDPC code word of 64800 bits is interleaved into a following sequence of bit groups 39, 47, 96, 176, 33, 75, 165, 38, 27, 58, 90, 76, 17, 46, 10, 91, 133, 69, 171, 32, 117, 78, 13, 146, 101, 36, 0, 138, 25, 77, 122, 49, 14, 125, 140, 93, 130, 2, 104, 102, 128, 4, 111, 151, 84, 167, 35, 127, 156, 55, 82, 85, 66, 114, 8, 147, 115, 113, 5, 31, 100, 106, 48, 52, 67, 107, 18, 126, 112, 50, 9, 143, 28, 160, 71, 79, 43, 98, 86, 94, 64, 3, 166, 105, 103, 118, 63, 51, 139, 172, 141, 175, 56, 74, 95, 29, 45, 129, 120, 168, 92, 150, 7, 162, 153, 137, 108, 159, 157, 173, 23, 89, 132, 57, 37, 70, 134, 40, 21, 149, 80, 1, 121, 59, 110, 142, 152, 15, 154, 145, 12, 170, 54, 155, 99, 22, 123, 72, 177, 131, 116, 44, 158, 73, 11, 65, 164, 119, 174, 34, 83, 53, 24, 42, 60, 26, 161, 68, 178, 41, 148, 109, 87, 144, 135, 20, 62, 81, 169, 124, 6, 19, 30, 163, 61, 179, 136, 97, 16, and 88; and the group-wise interleaved LDPC code word is mapped to one of the 4 signal points in the modulation scheme in units of 2 bits.
14. The receiving device according to claim 13, wherein the LDPC code word is encoded based on a parity check matrix of the LDPC code.
15. The receiving device according to claim 14, wherein
the parity check matrix includes a B matrix having a staircase structure and a D matrix being a unit matrix, the B matrix having g rows and g columns, the D matrix having N−K−g rows and N−K−g columns, wherein K=N×r, g=1440.
16. The receiving device according to claim 15, wherein the parity check matrix further comprises:
an A matrix, located at an upper left of the parity check matrix, having g rows and K columns, the B matrix located to a right side of the A matrix; and a C matrix, located to a bottom side of the A and B matrixes, having N−K−g rows and K+g columns, the D matrix located to a right side of the C matrix.
17. The receiving device according to claim 16, wherein the parity check matrix further comprises
a Z matrix, located to a right side of the B matrix and to a top side of the D matrix.
18. The receiving device according to claim 16, wherein
the A matrix and the C matrix corresponding to the information bits and the B matrix and the D matrix corresponding to the parity bits, the A matrix and the C matrix being represented by the parity check matrix initial value table, and each row of the parity check matrix initial value table indicates positions of elements “1” in corresponding 360 columns of the A matrix and the C matrix.
19. The receiving device according to claim 18, wherein
a row of the parity check matrix initial value table is represented by i and a length of the parity bits of the LDPC code word is represented by M, a 2+360×(i−1)-th column of the A matrix is obtained by a cyclic shift of a 1+360×(i−1)-th column of the A matrix indicating a position of an element 1 in the parity check matrix initial value table downward by q1=g/360 and a 2+360×(i−1)-th column of the C matrix is obtained by a cyclic shift of a 1+360×(i−1)-th column of the C matrix indicating a position of an element 1 in the parity check matrix initial value table downward by q2=(M−g)/360.
20. The receiving device according to claim 13, wherein the receiving device includes a display and a speaker.Cited by (0)
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