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US 12,526,071 B2Granted
Communication method and communication device
AssigneePanasonic Holdings Corporation
InventorsPeter Klenner, Frank Herrmann, Tomohiro Kimura
Life of this patent
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Abstract
A communication method includes executing a cyclic block permutation for a codeword generated based on a quasi-cyclic parity-check code including a repeat-accumulate quasi-cyclic low-density parity-check code, where the cyclic block permutation is permutation of cyclic blocks within the codeword, and mapping each bit of the codeword for which the cyclic block permutation is executed to any one of constellation point of a non-uniform constellation.
Claims5
A transmission method performed by a transmitter, the transmission method comprising:
- generating, by a coding circuit of the transmitter, a codeword according to quasi-cyclic low-density parity-check coding such that the codeword consists of N cyclic blocks, the N cyclic blocks each consist of Q bits, each of N and Q is a positive integer, and a code rate of the codeword is 7/15;
- reordering, by an interleaving circuit of the transmitter, the N cyclic blocks;
- mapping, by a mapping circuit of the transmitter, bits in the codeword onto constellation points of a non-uniform 4096 QAM scheme to generate mapped bits after the N cyclic blocks are reordered;
- and
- generating, by a signaling circuit of the transmitter, a transmission signal by performing orthogonal frequency-division multiplexing (OFDM) modulation on the mapped bits, wherein
- the N cyclic blocks are reordered according to Table 1 which is associated with the code rate, and
- in the Table 1, the j-th block of Group-wise Interleaver Output indicates the index of the cyclic block after the N cyclic blocks are reordered, and the π(j)-th block of Group-wise Interleaver Input indicates the index of the cyclic block before the N cyclic blocks are reordered
- TABLE 1
- j−th
- π (j)−th
- block of
- block of
- Group−wise
- Group−wise
- Interleaver
- Interleaver
- output
- input
- 0
- 59
- 1
- 122
- 2
- 161
- 3
- 93
- 4
- 37
- 5
- 112
- 6
- 111
- 7
- 62
- 8
- 42
- 9
- 102
- 10
- 119
- 11
- 72
- 12
- 60
- 13
- 144
- 14
- 34
- 15
- 120
- 16
- 46
- 17
- 31
- 18
- 129
- 19
- 172
- 20
- 149
- 21
- 94
- 22
- 65
- 23
- 9
- 24
- 0
- 25
- 76
- 26
- 13
- 27
- 61
- 28
- 3
- 29
- 70
- 30
- 40
- 31
- 78
- 32
- 127
- 33
- 35
- 34
- 145
- 35
- 28
- 36
- 48
- 37
- 162
- 38
- 92
- 39
- 73
- 40
- 6
- 41
- 134
- 42
- 66
- 43
- 160
- 44
- 133
- 45
- 101
- 46
- 4
- 47
- 5
- 48
- 87
- 49
- 106
- 50
- 79
- 51
- 104
- 52
- 168
- 53
- 163
- 54
- 170
- 55
- 57
- 56
- 83
- 57
- 44
- 58
- 54
- 59
- 110
- 60
- 30
- 61
- 50
- 62
- 82
- 63
- 10
- 64
- 148
- 65
- 98
- 66
- 41
- 67
- 22
- 68
- 96
- 69
- 49
- 70
- 90
- 71
- 100
- 72
- 29
- 73
- 39
- 74
- 175
- 75
- 38
- 76
- 109
- 77
- 91
- 78
- 74
- 79
- 159
- 80
- 139
- 81
- 177
- 82
- 71
- 83
- 47
- 84
- 146
- 85
- 63
- 86
- 86
- 87
- 45
- 88
- 123
- 89
- 33
- 90
- 138
- 91
- 51
- 92
- 89
- 93
- 88
- 94
- 167
- 95
- 80
- 96
- 142
- 97
- 108
- 98
- 69
- 99
- 7
- 100
- 103
- 101
- 115
- 102
- 99
- 103
- 135
- 104
- 36
- 105
- 11
- 106
- 166
- 107
- 169
- 108
- 8
- 109
- 165
- 110
- 68
- 111
- 173
- 112
- 140
- 113
- 95
- 114
- 179
- 115
- 2
- 116
- 125
- 117
- 105
- 118
- 1
- 119
- 116
- 120
- 150
- 121
- 174
- 122
- 15
- 123
- 75
- 124
- 64
- 125
- 176
- 126
- 81
- 127
- 55
- 128
- 130
- 129
- 151
- 130
- 156
- 131
- 53
- 132
- 171
- 133
- 16
- 134
- 113
- 135
- 24
- 136
- 117
- 137
- 154
- 138
- 157
- 139
- 164
- 140
- 143
- 141
- 12
- 142
- 56
- 143
- 152
- 144
- 20
- 145
- 85
- 146
- 84
- 147
- 77
- 148
- 158
- 149
- 107
- 150
- 32
- 151
- 153
- 152
- 147
- 153
- 132
- 154
- 124
- 155
- 52
- 156
- 121
- 157
- 58
- 158
- 118
- 159
- 137
- 160
- 114
- 161
- 97
- 162
- 19
- 163
- 155
- 164
- 67
- 165
- 25
- 166
- 17
- 167
- 126
- 168
- 23
- 169
- 43
- 170
- 27
- 171
- 21
- 172
- 136
- 173
- 131
- 174
- 26
- 175
- 14
- 176
- 18
- 177
- 128
- 178
- 141
- 179
- 178.
375 more elements
Dependencies are inferred from the claim text.