|
0 |
1 |
d1 |
0 |
1 |
0 |
1 d2 |
0 |
1 |
0 |
1 |
0 |
|
1 |
0 |
1 d3 |
A |
B |
C |
D |
|
E |
F |
G |
H |
Рис. 4. 21 Прореживание созвездия 64-КАМ до восьми сигнальных созвездий A,B,C,D,E,F,G,H
|
|
A |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
57 |
29 |
61 |
25 |
43 |
15 |
47 |
11 |
000000 |
100000 |
010000 |
110000 |
001000 |
101000 |
011000 |
111000 |
|
|
Рис. 4.22 |
Прореживание сигнального созвездия A |
|
|
||
136
|
|
B |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
59 |
31 |
63 |
27 |
41 |
13 |
45 |
9 |
000100 |
100100 |
010100 |
110100 |
001100 |
101100 |
011100 |
111100 |
|
|
Рис. 4.23 |
Прореживание сигнального созвездия B |
|
|
||
|
|
C |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
52 |
24 |
56 |
20 |
50 |
22 |
54 |
18 |
000010 |
100010 |
010010 |
110010 |
001010 |
101010 |
011010 |
111010 |
Рис. 4.24 Прореживание сигнального созвездия C
137
|
|
D |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
36 |
8 |
40 |
4 |
34 |
6 |
38 |
2 |
000110 |
100110 |
010110 |
110110 |
001110 |
101110 |
011110 |
111110 |
Рис. 4.25 Прореживание сигнального созвездия D
|
|
E |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
44 |
16 |
48 |
12 |
58 |
30 |
62 |
26 |
000001 |
100001 |
010001 |
110001 |
001001 |
101001 |
011001 |
111001 |
|
|
Рис. 4.26 |
Прореживание сигнального созвездия E |
|
|
||
138
|
|
F |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
60 |
32 |
64 |
28 |
42 |
14 |
46 |
10 |
000101 |
100101 |
010101 |
110101 |
001101 |
101101 |
011101 |
111101 |
|
|
Рис. 4.27 |
Прореживание сигнального созвездия F |
|
|
||
|
|
G |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
35 |
7 |
39 |
3 |
49 |
21 |
53 |
17 |
000011 |
100011 |
010011 |
110011 |
001011 |
101011 |
011011 |
111011 |
|
|
Рис. 4.28 |
Прореживание сигнального созвездия G |
|
|
||
139
|
|
H |
|
|
0 |
1 |
d4 |
0 |
1 |
0 |
1 d5 |
0 |
1 |
0 |
1 |
0 |
1 |
0 |
1 d6 |
51 |
23 |
55 |
19 |
33 |
5 |
37 |
1 |
000111 |
100111 |
010111 |
110111 |
001111 |
101111 |
011111 |
111111 |
Рис. 4.29 Прореживание сигнального созвездия H
Таблица 4.9 Кодовая таблица размещения при 64-КАМ
|
|
Состояния потоков |
|
|
Состояния потоков |
|
Значения |
|||||||||||
Номер |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
уровней |
|
сигнальной |
d6 |
|
d5 |
d4 |
d3 |
d2 |
|
d1 |
i1 |
|
i2 |
i3 |
q1 |
q2 |
|
q3 |
I |
Q |
точки |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 |
1 |
|
1 |
1 |
1 |
1 |
|
1 |
0 |
|
0 |
0 |
0 |
0 |
|
0 |
+7 |
+7 |
2 |
1 |
|
1 |
1 |
1 |
1 |
|
0 |
0 |
|
0 |
0 |
0 |
0 |
|
1 |
+7 |
+5 |
3 |
1 |
|
1 |
0 |
0 |
1 |
|
1 |
0 |
|
0 |
0 |
0 |
1 |
|
0 |
+7 |
+3 |
4 |
1 |
|
1 |
0 |
1 |
1 |
|
0 |
0 |
|
0 |
0 |
0 |
1 |
|
1 |
+7 |
+1 |
5 |
1 |
|
0 |
1 |
1 |
1 |
|
1 |
0 |
|
0 |
0 |
1 |
0 |
|
0 |
+7 |
-1 |
6 |
1 |
|
0 |
1 |
1 |
1 |
|
0 |
0 |
|
0 |
0 |
1 |
0 |
|
1 |
+7 |
-3 |
7 |
1 |
|
0 |
0 |
0 |
1 |
|
1 |
0 |
|
0 |
0 |
1 |
1 |
|
0 |
+7 |
-5 |
8 |
1 |
|
0 |
0 |
1 |
1 |
|
0 |
0 |
|
0 |
0 |
1 |
1 |
|
1 |
+7 |
-7 |
9 |
1 |
|
1 |
1 |
1 |
0 |
|
0 |
0 |
|
0 |
1 |
0 |
0 |
|
0 |
+5 |
+7 |
10 |
1 |
|
1 |
1 |
1 |
0 |
|
1 |
0 |
|
0 |
1 |
0 |
0 |
|
1 |
+5 |
+5 |
11 |
1 |
|
1 |
1 |
0 |
0 |
|
0 |
0 |
|
0 |
1 |
0 |
1 |
|
0 |
+5 |
+3 |
12 |
1 |
|
1 |
0 |
0 |
0 |
|
1 |
0 |
|
0 |
1 |
0 |
1 |
|
1 |
+5 |
+1 |
13 |
1 |
|
0 |
1 |
1 |
0 |
|
0 |
0 |
|
0 |
1 |
1 |
0 |
|
0 |
+5 |
-1 |
14 |
1 |
|
0 |
1 |
1 |
0 |
|
1 |
0 |
|
0 |
1 |
1 |
0 |
|
1 |
+5 |
-3 |
15 |
1 |
|
0 |
1 |
0 |
0 |
|
0 |
0 |
|
0 |
1 |
1 |
1 |
|
0 |
+5 |
-5 |
16 |
1 |
|
0 |
0 |
0 |
0 |
|
1 |
0 |
|
0 |
1 |
1 |
1 |
|
1 |
+5 |
-7 |
17 |
1 |
|
1 |
1 |
0 |
1 |
|
1 |
0 |
|
1 |
0 |
0 |
0 |
|
0 |
+3 |
+7 |
18 |
1 |
|
1 |
1 |
0 |
1 |
|
0 |
0 |
|
1 |
0 |
0 |
0 |
|
1 |
+3 |
+5 |
19 |
1 |
|
1 |
0 |
1 |
1 |
|
1 |
0 |
|
1 |
0 |
0 |
1 |
|
0 |
+3 |
+3 |
|
|
|
|
|
|
|
|
140 |
|
|
|
|
|
|
|
|
|
|