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第六章差错编码.pdf

发布：2017-06-17约3万字共50页下载文档
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/ 2004 Spring HuangDept.6USTC 1 E /n b 0 E /n b 0 —Shannon 2004 Spring HuangDept.6USTC 2 ··· 011010010011110010010 ··· ··· 010101100100011101010 ··· 1111110111101111 10 b ARQ FEC FEC+ARQ 2004 Spring HuangDept.6USTC 3 / (Hamming)d n−1 d (C C C ⊕C i j ∑ ik jk k 0 1001111010d=2 dmin xdmin x+1 ydmin 2y+1 xydmin x+y+1 yx 2004 Spring HuangDept.6USTC 4 code rateR =k/n c kn=k+rr 2004 Spring HuangDept.6USTC 5 (Parity) “1” (Parity bit) c0 c ⊕c ⊕c ⊕⊕c ⊕c 0 n −1 n −2 n −3 1 0 dmin =2 2004 Spring HuangDept.6USTC 6
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