5.3.3 Channel coding of small block lengths
38.2123GPPMultiplexing and channel codingNRRelease 17TS
The bit sequence input for a given code block to channel coding is denoted by 
, where 
is the number of bits to encode. After encoding the bits are denoted by 
.
5.3.3.1 Encoding of 1-bit information
For 
, the code block is encoded according to Table 5.3.3.1-1, where 
and 
is the modulation order for the code block.
Table 5.3.3.1-1: Encoding of 1-bit information
|
|
Encoded bits |
|
1 |
|
|
2 |
|
|
4 |
|
|
6 |
|
|
8 |
|
The "x" and "y" in Table 5.3.3.1-1 are placeholders for Clauses 6.3.1.1, 6.3.2.5.1, 6.3.2.6.1 of [4, TS 38.211] to scramble the information bits in a way that maximizes the Euclidean distance of the modulation symbols carrying the information bits.
5.3.3.2 Encoding of 2-bit information
For 
, the code block is encoded according to Table 5.3.3.2-1, where 
, 
, and 
is the modulation order for the code block.
Table 5.3.3.2-1: Encoding of 2-bit information
|
|
Encoded bits |
|
1 |
|
|
2 |
|
|
4 |
|
|
6 |
|
|
8 |
|
The "x" in Table 5.3.3.2-1 are placeholders for Clause 6.3.1.1 of [4, TS 38.211] to scramble the information bits in a way that maximizes the Euclidean distance of the modulation symbols carrying the information bits.
5.3.3.3 Encoding of other small block lengths
For 
, the code block is encoded by 
, where 
, 
, and 
represents the basis sequences as defined in Table 5.3.3.3-1.
Table 5.3.3.3-1: Basis sequences for (32, 
) code
|
i |
Mi,0 |
Mi,1 |
Mi,2 |
Mi,3 |
Mi,4 |
Mi,5 |
Mi,6 |
Mi,7 |
Mi,8 |
Mi,9 |
Mi,10 |
|
0 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
|
1 |
1 |
1 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
|
2 |
1 |
0 |
0 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
|
3 |
1 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
|
4 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
|
5 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
|
6 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
|
7 |
1 |
0 |
0 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
|
8 |
1 |
1 |
0 |
1 |
1 |
0 |
0 |
1 |
0 |
1 |
1 |
|
9 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
|
10 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
1 |
1 |
|
11 |
1 |
1 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
1 |
|
12 |
1 |
0 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
1 |
|
13 |
1 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 |
1 |
|
14 |
1 |
0 |
0 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
|
15 |
1 |
1 |
0 |
0 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
|
16 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
|
17 |
1 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
1 |
0 |
0 |
|
18 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
0 |
|
19 |
1 |
0 |
0 |
0 |
0 |
1 |
1 |
0 |
0 |
0 |
0 |
|
20 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
1 |
|
21 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
|
22 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
1 |
|
23 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
|
24 |
1 |
1 |
1 |
1 |
1 |
0 |
1 |
1 |
1 |
1 |
0 |
|
25 |
1 |
1 |
0 |
0 |
0 |
1 |
1 |
1 |
0 |
0 |
1 |
|
26 |
1 |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
1 |
0 |
|
27 |
1 |
1 |
1 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
|
28 |
1 |
0 |
1 |
0 |
1 |
1 |
1 |
0 |
1 |
0 |
0 |
|
29 |
1 |
0 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
0 |
0 |
|
30 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
1 |
|
31 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |