A transmission device comprising: an encoding unit configured to perform LDPC coding on the basis of a parity check matrix of an LDPC code with a code length N of 17280 bits and a code rate r of 11/16, wherein an LDPC code word of the LDPC code includes K information bits and M = N-K parity bits, the parity check matrix includes an MxK information matrix portion corresponding to the information bits and a MxM parity matrix portion corresponding to the parity bits, the parity matrix portion is a lower bidiagonal matrix in which elements of "1" are arranged in a step-like manner, wherein the row weight of the parity matrix portion is 1 in the 1st row and 2 in all the remaining rows and the column weight is 1 in the last column and 2 in all the remaining columns, the information matrix portion is represented by a parity check matrix initial value table, and the parity check matrix initial value table is a table showing in its i-th row, 1 ≤ i ≤ 33, the positions of elements "1" in the 1+360x(i-1)-th column of the information matrix portion, and wherein based on each 1+360x(i-1)-th column, 1 ≤ i ≤ 33, columns 2+360x(i-1) through 360xi of the information matrix portion are determined by cyclically shifting downward the respective preceding column by M/360, and is given by 91 382 494 654 681 695 1643 2171 2576 3027 3115 3390 3633 3644 3812 3883 4474 4607 4674 384 396 982 988 1053 1867 2215 2345 2472 3323 3503 3573 3883 4159 4576 4917 5104 5130 456 580 1590 1715 1786 1843 1934 2251 2261 2466 2525 2958 3467 4334 4530 4779 4885 5021 227 381 394 502 1059 1108 1480 1508 1523 1620 1840 1996 2436 2989 3716 3957 4072 4243 4482 4517 4717 4910 5105 5220 5238 5279 376 957 1706 2028 2228 2439 2552 4249 5234 89 676 1098 1103 1127 1449 1605 2362 4640 66 613 1692 1901 2247 3025 3244 4864 5050 1628 2015 2596 521 802 3804 3178 4080 5057 344 3486 3948 595 2538 2964 300 1355 3476 1292 2761 4819 462 773 3996 133 3494 4342 37 3698 4382 345 3624 4745 124 4197 4978 873 2686 4266 989 2966 4180 1468 1932 4913 1140 4164 5060 3361 4952 5287 2584 4646 5260 809 2481 4893 1201 1532 3877 128 2430 4279 621 4810 5249 200 717 5066 2283 2998 4164 704 2587 4736 106 2080 3279. an encoding unit configured to perform LDPC coding on the basis of a parity check matrix of an LDPC code with a code length N of 17280 bits and a code rate r of 11/16, wherein an LDPC code word of the LDPC code includes K information bits and M = N-K parity bits, the parity check matrix includes an MxK information matrix portion corresponding to the information bits and a MxM parity matrix portion corresponding to the parity bits, the parity matrix portion is a lower bidiagonal matrix in which elements of "1" are arranged in a step-like manner, wherein the row weight of the parity matrix portion is 1 in the 1st row and 2 in all the remaining rows and the column weight is 1 in the last column and 2 in all the remaining columns, the information matrix portion is represented by a parity check matrix initial value table, and the parity check matrix initial value table is a table showing in its i-th row, 1 ≤ i ≤ 33, the positions of elements "1" in the 1+360x(i-1)-th column of the information matrix portion, and wherein based on each 1+360x(i-1)-th column, 1 ≤ i ≤ 33, columns 2+360x(i-1) through 360xi of the information matrix portion are determined by cyclically shifting downward the respective preceding column by M/360, and is given by 91 382 494 654 681 695 1643 2171 2576 3027 3115 3390 3633 3644 3812 3883 4474 4607 4674 384 396 982 988 1053 1867 2215 2345 2472 3323 3503 3573 3883 4159 4576 4917 5104 5130 456 580 1590 1715 1786 1843 1934 2251 2261 2466 2525 2958 3467 4334 4530 4779 4885 5021 227 381 394 502 1059 1108 1480 1508 1523 1620 1840 1996 2436 2989 3716 3957 4072 4243 4482 4517 4717 4910 5105 5220 5238 5279 376 957 1706 2028 2228 2439 2552 4249 5234 89 676 1098 1103 1127 1449 1605 2362 4640 66 613 1692 1901 2247 3025 3244 4864 5050 1628 2015 2596 521 802 3804 3178 4080 5057 344 3486 3948 595 2538 2964 300 1355 3476 1292 2761 4819 462 773 3996 133 3494 4342 37 3698 4382 345 3624 4745 124 4197 4978 873 2686 4266 989 2966 4180 1468 1932 4913 1140 4164 5060 3361 4952 5287 2584 4646 5260 809 2481 4893 1201 1532 3877 128 2430 4279 621 4810 5249 200 717 5066 2283 2998 4164 704 2587 4736 106 2080 3279. 91 382 494 654 681 695 1643 2171 2576 3027 3115 3390 3633 3644 3812 3883 4474 4607 4674 384 396 982 988 1053 1867 2215 2345 2472 3323 3503 3573 3883 4159 4576 4917 5104 5130 456 580 1590 1715 1786 1843 1934 2251 2261 2466 2525 2958 3467 4334 4530 4779 4885 5021 227 381 394 502 1059 1108 1480 1508 1523 1620 1840 1996 2436 2989 3716 3957 4072 4243 4482 4517 4717 4910 5105 5220 5238 5279 376 957 1706 2028 2228 2439 2552 4249 5234 89 676 1098 1103 1127 1449 1605 2362 4640 66 613 1692 1901 2247 3025 3244 4864 5050 1628 2015 2596 521 802 3804 3178 4080 5057 344 3486 3948 595 2538 2964 300 1355 3476 1292 2761 4819 462 773 3996 133 3494 4342 37 3698 4382 345 3624 4745 124 4197 4978 873 2686 4266 989 2966 4180 1468 1932 4913 1140 4164 5060 3361 4952 5287 2584 4646 5260 809 2481 4893 1201 1532 3877 128 2430 4279 621 4810 5249 200 717 5066 2283 2998 4164 704 2587 4736 106 2080 3279.