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 LDPC+QAM256, Создание QC-LDPC-BC пров.матриц под модуляцию QAM256 |
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 Dec 7 2010, 11:55
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Добрый день коллеги!
Возможно учесть вид модуляции(QAM256) при создании матриц LDPC? Сейчас использую алгоритм PEG.
P.S. Сорри за тупой вопрос, кодированием занимаюсь недавно.
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Ох не лёгкая это работа попасть в группу "свой"....
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Ответов
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Dec 10 2010, 11:39
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Цитата(Serg76 @ Dec 10 2010, 17:28)  2 brig01
А можно для лучшего восприятия привести словесный алгоритм расщепителя или математические выражения? Честно говоря не знаю что сдесь не ясно, код вроде элементарный. Логи выполнения: Код # In = 0000 InM = -16 OutM = -64 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 7
# In = 0000 InM = -15 OutM = -63 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 6
# In = 0000 InM = -15 OutM = -62 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 5
# In = 0000 InM = -15 OutM = -61 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 4
# In = 0000 InM = -15 OutM = -60 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 3
# In = 0000 InM = -14 OutM = -59 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 2
# In = 0000 InM = -14 OutM = -58 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 1
# In = 0000 InM = -14 OutM = -57 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = 0
# In = 0001 InM = -14 OutM = -56 M[3] = 7 M[2] = 7 M[1] = 7 M[0] = -1
# In = 0001 InM = -13 OutM = -55 M[3] = 7 M[2] = 7 M[1] = 6 M[0] = -2
# In = 0001 InM = -13 OutM = -54 M[3] = 7 M[2] = 7 M[1] = 5 M[0] = -3
# In = 0001 InM = -13 OutM = -53 M[3] = 7 M[2] = 7 M[1] = 4 M[0] = -4
# In = 0001 InM = -13 OutM = -52 M[3] = 7 M[2] = 7 M[1] = 3 M[0] = -5
# In = 0001 InM = -12 OutM = -51 M[3] = 7 M[2] = 7 M[1] = 2 M[0] = -6
# In = 0001 InM = -12 OutM = -50 M[3] = 7 M[2] = 7 M[1] = 1 M[0] = -7
# In = 0001 InM = -12 OutM = -49 M[3] = 7 M[2] = 7 M[1] = 0 M[0] = -8
# In = 0011 InM = -12 OutM = -48 M[3] = 7 M[2] = 7 M[1] = -1 M[0] = -8
# In = 0011 InM = -11 OutM = -47 M[3] = 7 M[2] = 7 M[1] = -2 M[0] = -7
# In = 0011 InM = -11 OutM = -46 M[3] = 7 M[2] = 7 M[1] = -3 M[0] = -6
# In = 0011 InM = -11 OutM = -45 M[3] = 7 M[2] = 7 M[1] = -4 M[0] = -5
# In = 0011 InM = -11 OutM = -44 M[3] = 7 M[2] = 7 M[1] = -5 M[0] = -4
# In = 0011 InM = -10 OutM = -43 M[3] = 7 M[2] = 7 M[1] = -6 M[0] = -3
# In = 0011 InM = -10 OutM = -42 M[3] = 7 M[2] = 7 M[1] = -7 M[0] = -2
# In = 0011 InM = -10 OutM = -41 M[3] = 7 M[2] = 7 M[1] = -8 M[0] = -1
# In = 0010 InM = -10 OutM = -40 M[3] = 7 M[2] = 7 M[1] = -8 M[0] = 0
# In = 0010 InM = -9 OutM = -39 M[3] = 7 M[2] = 6 M[1] = -8 M[0] = 1
# In = 0010 InM = -9 OutM = -38 M[3] = 7 M[2] = 5 M[1] = -8 M[0] = 2
# In = 0010 InM = -9 OutM = -37 M[3] = 7 M[2] = 4 M[1] = -8 M[0] = 3
# In = 0010 InM = -9 OutM = -36 M[3] = 7 M[2] = 3 M[1] = -8 M[0] = 4
# In = 0010 InM = -8 OutM = -35 M[3] = 7 M[2] = 2 M[1] = -8 M[0] = 5
# In = 0010 InM = -8 OutM = -34 M[3] = 7 M[2] = 1 M[1] = -8 M[0] = 6
# In = 0010 InM = -8 OutM = -33 M[3] = 7 M[2] = 0 M[1] = -8 M[0] = 7
# In = 0110 InM = -8 OutM = -32 M[3] = 7 M[2] = -1 M[1] = -8 M[0] = 7
# In = 0110 InM = -7 OutM = -31 M[3] = 7 M[2] = -2 M[1] = -8 M[0] = 6
# In = 0110 InM = -7 OutM = -30 M[3] = 7 M[2] = -3 M[1] = -8 M[0] = 5
# In = 0110 InM = -7 OutM = -29 M[3] = 7 M[2] = -4 M[1] = -8 M[0] = 4
# In = 0110 InM = -7 OutM = -28 M[3] = 7 M[2] = -5 M[1] = -8 M[0] = 3
# In = 0110 InM = -6 OutM = -27 M[3] = 7 M[2] = -6 M[1] = -8 M[0] = 2
# In = 0110 InM = -6 OutM = -26 M[3] = 7 M[2] = -7 M[1] = -8 M[0] = 1
# In = 0110 InM = -6 OutM = -25 M[3] = 7 M[2] = -8 M[1] = -8 M[0] = 0
# In = 0111 InM = -6 OutM = -24 M[3] = 7 M[2] = -8 M[1] = -8 M[0] = -1
# In = 0111 InM = -5 OutM = -23 M[3] = 7 M[2] = -8 M[1] = -7 M[0] = -2
# In = 0111 InM = -5 OutM = -22 M[3] = 7 M[2] = -8 M[1] = -6 M[0] = -3
# In = 0111 InM = -5 OutM = -21 M[3] = 7 M[2] = -8 M[1] = -5 M[0] = -4
# In = 0111 InM = -5 OutM = -20 M[3] = 7 M[2] = -8 M[1] = -4 M[0] = -5
# In = 0111 InM = -4 OutM = -19 M[3] = 7 M[2] = -8 M[1] = -3 M[0] = -6
# In = 0111 InM = -4 OutM = -18 M[3] = 7 M[2] = -8 M[1] = -2 M[0] = -7
# In = 0111 InM = -4 OutM = -17 M[3] = 7 M[2] = -8 M[1] = -1 M[0] = -8
# In = 0101 InM = -4 OutM = -16 M[3] = 7 M[2] = -8 M[1] = 0 M[0] = -8
# In = 0101 InM = -3 OutM = -15 M[3] = 7 M[2] = -8 M[1] = 1 M[0] = -7
# In = 0101 InM = -3 OutM = -14 M[3] = 7 M[2] = -8 M[1] = 2 M[0] = -6
# In = 0101 InM = -3 OutM = -13 M[3] = 7 M[2] = -8 M[1] = 3 M[0] = -5
# In = 0101 InM = -3 OutM = -12 M[3] = 7 M[2] = -8 M[1] = 4 M[0] = -4
# In = 0101 InM = -2 OutM = -11 M[3] = 7 M[2] = -8 M[1] = 5 M[0] = -3
# In = 0101 InM = -2 OutM = -10 M[3] = 7 M[2] = -8 M[1] = 6 M[0] = -2
# In = 0101 InM = -2 OutM = -9 M[3] = 7 M[2] = -8 M[1] = 7 M[0] = -1
# In = 0100 InM = -2 OutM = -8 M[3] = 7 M[2] = -8 M[1] = 7 M[0] = 0
# In = 0100 InM = -1 OutM = -7 M[3] = 6 M[2] = -8 M[1] = 7 M[0] = 1
# In = 0100 InM = -1 OutM = -6 M[3] = 5 M[2] = -8 M[1] = 7 M[0] = 2
# In = 0100 InM = -1 OutM = -5 M[3] = 4 M[2] = -8 M[1] = 7 M[0] = 3
# In = 0100 InM = -1 OutM = -4 M[3] = 3 M[2] = -8 M[1] = 7 M[0] = 4
# In = 0100 InM = 0 OutM = -3 M[3] = 2 M[2] = -8 M[1] = 7 M[0] = 5
# In = 0100 InM = 0 OutM = -2 M[3] = 1 M[2] = -8 M[1] = 7 M[0] = 6
# In = 0100 InM = 0 OutM = -1 M[3] = 0 M[2] = -8 M[1] = 7 M[0] = 7
# In = 1100 InM = 0 OutM = 0 M[3] = -1 M[2] = -8 M[1] = 7 M[0] = 7
# In = 1100 InM = 0 OutM = 1 M[3] = -2 M[2] = -8 M[1] = 7 M[0] = 6
# In = 1100 InM = 0 OutM = 2 M[3] = -3 M[2] = -8 M[1] = 7 M[0] = 5
# In = 1100 InM = 0 OutM = 3 M[3] = -4 M[2] = -8 M[1] = 7 M[0] = 4
# In = 1100 InM = 1 OutM = 4 M[3] = -5 M[2] = -8 M[1] = 7 M[0] = 3
# In = 1100 InM = 1 OutM = 5 M[3] = -6 M[2] = -8 M[1] = 7 M[0] = 2
# In = 1100 InM = 1 OutM = 6 M[3] = -7 M[2] = -8 M[1] = 7 M[0] = 1
# In = 1100 InM = 1 OutM = 7 M[3] = -8 M[2] = -8 M[1] = 7 M[0] = 0
# In = 1101 InM = 2 OutM = 8 M[3] = -8 M[2] = -8 M[1] = 7 M[0] = -1
# In = 1101 InM = 2 OutM = 9 M[3] = -8 M[2] = -8 M[1] = 6 M[0] = -2
# In = 1101 InM = 2 OutM = 10 M[3] = -8 M[2] = -8 M[1] = 5 M[0] = -3
# In = 1101 InM = 2 OutM = 11 M[3] = -8 M[2] = -8 M[1] = 4 M[0] = -4
# In = 1101 InM = 3 OutM = 12 M[3] = -8 M[2] = -8 M[1] = 3 M[0] = -5
# In = 1101 InM = 3 OutM = 13 M[3] = -8 M[2] = -8 M[1] = 2 M[0] = -6
# In = 1101 InM = 3 OutM = 14 M[3] = -8 M[2] = -8 M[1] = 1 M[0] = -7
# In = 1101 InM = 3 OutM = 15 M[3] = -8 M[2] = -8 M[1] = 0 M[0] = -8
# In = 1111 InM = 4 OutM = 16 M[3] = -8 M[2] = -8 M[1] = -1 M[0] = -8
# In = 1111 InM = 4 OutM = 17 M[3] = -8 M[2] = -8 M[1] = -2 M[0] = -7
# In = 1111 InM = 4 OutM = 18 M[3] = -8 M[2] = -8 M[1] = -3 M[0] = -6
# In = 1111 InM = 4 OutM = 19 M[3] = -8 M[2] = -8 M[1] = -4 M[0] = -5
# In = 1111 InM = 5 OutM = 20 M[3] = -8 M[2] = -8 M[1] = -5 M[0] = -4
# In = 1111 InM = 5 OutM = 21 M[3] = -8 M[2] = -8 M[1] = -6 M[0] = -3
# In = 1111 InM = 5 OutM = 22 M[3] = -8 M[2] = -8 M[1] = -7 M[0] = -2
# In = 1111 InM = 5 OutM = 23 M[3] = -8 M[2] = -8 M[1] = -8 M[0] = -1
# In = 1110 InM = 6 OutM = 24 M[3] = -8 M[2] = -8 M[1] = -8 M[0] = 0
# In = 1110 InM = 6 OutM = 25 M[3] = -8 M[2] = -7 M[1] = -8 M[0] = 1
# In = 1110 InM = 6 OutM = 26 M[3] = -8 M[2] = -6 M[1] = -8 M[0] = 2
# In = 1110 InM = 6 OutM = 27 M[3] = -8 M[2] = -5 M[1] = -8 M[0] = 3
# In = 1110 InM = 7 OutM = 28 M[3] = -8 M[2] = -4 M[1] = -8 M[0] = 4
# In = 1110 InM = 7 OutM = 29 M[3] = -8 M[2] = -3 M[1] = -8 M[0] = 5
# In = 1110 InM = 7 OutM = 30 M[3] = -8 M[2] = -2 M[1] = -8 M[0] = 6
# In = 1110 InM = 7 OutM = 31 M[3] = -8 M[2] = -1 M[1] = -8 M[0] = 7
# In = 1010 InM = 8 OutM = 32 M[3] = -8 M[2] = 0 M[1] = -8 M[0] = 7
# In = 1010 InM = 8 OutM = 33 M[3] = -8 M[2] = 1 M[1] = -8 M[0] = 6
# In = 1010 InM = 8 OutM = 34 M[3] = -8 M[2] = 2 M[1] = -8 M[0] = 5
# In = 1010 InM = 8 OutM = 35 M[3] = -8 M[2] = 3 M[1] = -8 M[0] = 4
# In = 1010 InM = 9 OutM = 36 M[3] = -8 M[2] = 4 M[1] = -8 M[0] = 3
# In = 1010 InM = 9 OutM = 37 M[3] = -8 M[2] = 5 M[1] = -8 M[0] = 2
# In = 1010 InM = 9 OutM = 38 M[3] = -8 M[2] = 6 M[1] = -8 M[0] = 1
# In = 1010 InM = 9 OutM = 39 M[3] = -8 M[2] = 7 M[1] = -8 M[0] = 0
# In = 1011 InM = 10 OutM = 40 M[3] = -8 M[2] = 7 M[1] = -8 M[0] = -1
# In = 1011 InM = 10 OutM = 41 M[3] = -8 M[2] = 7 M[1] = -7 M[0] = -2
# In = 1011 InM = 10 OutM = 42 M[3] = -8 M[2] = 7 M[1] = -6 M[0] = -3
# In = 1011 InM = 10 OutM = 43 M[3] = -8 M[2] = 7 M[1] = -5 M[0] = -4
# In = 1011 InM = 11 OutM = 44 M[3] = -8 M[2] = 7 M[1] = -4 M[0] = -5
# In = 1011 InM = 11 OutM = 45 M[3] = -8 M[2] = 7 M[1] = -3 M[0] = -6
# In = 1011 InM = 11 OutM = 46 M[3] = -8 M[2] = 7 M[1] = -2 M[0] = -7
# In = 1011 InM = 11 OutM = 47 M[3] = -8 M[2] = 7 M[1] = -1 M[0] = -8
# In = 1001 InM = 12 OutM = 48 M[3] = -8 M[2] = 7 M[1] = 0 M[0] = -8
# In = 1001 InM = 12 OutM = 49 M[3] = -8 M[2] = 7 M[1] = 1 M[0] = -7
# In = 1001 InM = 12 OutM = 50 M[3] = -8 M[2] = 7 M[1] = 2 M[0] = -6
# In = 1001 InM = 12 OutM = 51 M[3] = -8 M[2] = 7 M[1] = 3 M[0] = -5
# In = 1001 InM = 13 OutM = 52 M[3] = -8 M[2] = 7 M[1] = 4 M[0] = -4
# In = 1001 InM = 13 OutM = 53 M[3] = -8 M[2] = 7 M[1] = 5 M[0] = -3
# In = 1001 InM = 13 OutM = 54 M[3] = -8 M[2] = 7 M[1] = 6 M[0] = -2
# In = 1001 InM = 13 OutM = 55 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = -1
# In = 1000 InM = 14 OutM = 56 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 0
# In = 1000 InM = 14 OutM = 57 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 1
# In = 1000 InM = 14 OutM = 58 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 2
# In = 1000 InM = 14 OutM = 59 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 3
# In = 1000 InM = 15 OutM = 60 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 4
# In = 1000 InM = 15 OutM = 61 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 5
# In = 1000 InM = 15 OutM = 62 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 6
# In = 1000 InM = 15 OutM = 63 M[3] = -8 M[2] = 7 M[1] = 7 M[0] = 7 In - входые биты до грея InM - это Жёсткое решение 4 бита OutM OutM - на выходе модема M[3..0] - метрики
Сообщение отредактировал brig01 - Dec 10 2010, 11:41
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Ох не лёгкая это работа попасть в группу "свой"....
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Цитата(des00 ... Jan 25 2011, 17:23 thermit Цитатаdes00:
в приведенном мной численном примере,... Jan 25 2011, 20:53 des00 Цитата(vadimuzzz @ Jan 25 2011, 10:48) по... Jan 26 2011, 05:37 vadimuzzz нативное созвездие явно не оптимально. например, с... Jan 26 2011, 05:57 des00 Цитата(vadimuzzz @ Jan 25 2011, 23:57) на... Jan 26 2011, 06:05 vadimuzzz Цитата(des00 @ Jan 26 2011, 12:05) все та... Jan 26 2011, 06:58 des00 либо я объяснять не умею, либо туплю. Зайду с друг... Jan 26 2011, 11:10 petrov Цитата(des00 @ Jan 26 2011, 14:10) 3. Есл... Jan 26 2011, 11:35 des00 Цитата(petrov @ Jan 26 2011, 05:35) Эквив... Jan 26 2011, 12:00 Serg76 Ну вот теперь вроде как все окончательно прояснило... Jan 26 2011, 11:44 thermit Цитатаdes00:
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