sur un CD
canal binaire symétrique / canal binaire à effacement
code naïf (3,1,3)
Si p = 10-3, 
.
code de parité
Si p = 10-3, .
|
a |
0 |
1 |
1 |
0 |
1 |
0 |
0 |
1 |
|
b |
0 |
0 |
1 |
0 |
1 |
1 |
0 |
1 |
|
a-b |
0 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
d(a,b) = poids de a-b = 2
G = 
P =
H =
|
1 |
2 |
3 |
4 |
5 |
16 |
17 |
18 |
19 |
20 |
... |
|
|
|
* |
6 |
7 |
8 |
9 |
10 |
21 |
22 |
23 |
24 |
25 |
... |
|
|
* |
* |
11 |
12 |
13 |
14 |
15 |
26 |
27 |
28 |
29 |
30 |
... |