Patent ID: 11949433
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 3:
4. A transmitting method comprising:
encoding input bits to generate a codeword based on a low density parity check (LDPC) code, a code rate of the LDPC code being 5/15 and a code length of the LDPC code being 16200 bits;
splitting the codeword into a plurality of bit groups;
interleaving the plurality of bit groups;
interleaving bits of the interleaved plurality of bit groups;
mapping the interleaved bits to constellation points for 64-quadrature amplitude modulation (QAM); and
transmitting a signal which is generated based on the constellation points,
wherein the plurality of bit groups are interleaved as follows:, Y
      j
    
    =
    
      
        X
        
          π
          ⁡
          
            (
            j
            )
          
        
      
      ⁢
      
        
      
      ⁢
      for
      ⁢
      
        
      
      ⁢
      
        (
        
          0
          ≤
          j
          <
          
            N
            
              g
              ⁢
              roup
            
          
        
        )
      
    
  
  ,

where Xj is a j-th bit group among the plurality of bit groups, Yj is a j-th bit group among the interleaved plurality of bit groups, Ngroup is a number of the plurality of bit groups and π(j) denotes an interleaving order for the interleaving, and
wherein the π(j) is represented as follows:, The Interleaving Order

π(j) (0 ≤j <45)

j
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22

23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44

π(j)
25
44
8
39
37
2
11
7
0
12
4
31
33
38
43
21
26
13
28
29
1
27
18

17
34
3
42
10
19
20
32
36
40
9
41
5
35
30
22
15
16
6
24
23
14.