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二.卷积码--有记忆的码有记忆编码电路 1000( m1) c= c0,2) 00000=(101,000,001,000,000,) c0,3) 10100. c(2.1) 00000.. m(2 c(2)= c(2,2) 10000 =(011,001,000,000,000,,) c2,3) 11000 10000 0 00 m=m(1)+m2)→c=c0+c2)=00 1 11 0 10 0 100 01100 =(101,000,001,000,000,.)+(011,001,000,000,0002.) =(110,001,001,000,000,,…)二. 卷积码-----有记忆的码-----有记忆编码电路 (011,001,000,000,000,...,) 1 1 0 0 0 ...... 1 0 0 0 0 ...... 0 0 0 0 0 ...... (2,3) (2,2) (2,1) (2) =           =           = c c c m(2) c (101,000,001,000,000,...,) 1 0 1 0 0 ...... 0 0 0 0 0 ...... 1 0 0 0 0 ...... (1,3) (1,2) (1,1) (1) =           =           = c c c m(1) c m= m(1)+m(2) (110,001,001,000,000,...,...) 101 000 001 000 000,...,... 011 001 000 000 000,...,... 0 1 1 0 0 ...... 1 0 0 0 0 ...... 1 0 0 0 0 ...... 1 1 0 0 0 ...... 1 0 0 0 0 ...... 0 0 0 0 0 ...... 1 0 1 0 0 ...... 0 0 0 0 0 ...... 1 0 0 0 0 ...... (1) (2) = = +           =           +           = + = ( , , , , )( , , , , ) c c c
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