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Chapter9 9 LDPC sum-product LDPC 9.1 ( ) 9.2 c 1, c 2, {0, 1, } SUM, PROD : {0, 1, } {0, 1, } SUM(c 1, c 2,, c n ) := { c1 + + c n (c n0 (1 n
2 (1) a = ( 2, 2), b = (1, 2), c = (4, 4) c = l a + k b l, k (2) a = (3, 5) (1) (4, 4) = l( 2, 2) + k(1, 2), (4, 4) = ( 2l + k, 2l 2k) 2l + k = 4, 2l
3 p(3) , 3 +, 2 + 2, 2 + +, p(4) , 6, 7, 8 p(5), p(6), p(7), p(8). p(5) 7, p(6), p(7) 5, p(8) , + +
( )/2 hara/lectures/lectures-j.html 2, {H} {T } S = {H, T } {(H, H), (H, T )} {(H, T ), (T, T )} {(H, H), (T, T )} {1
,,., (,, SiO 2, Si-N, ),,,,,.,.,,, (Schottky). [ ].,..,.,., 1 m µm 10., 10 5, [ ] (6N-103)..,.,. [ ] 1. (,, ) :,.,,.., (HF),.
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