码3的映射关系: aB faM+Bm) afM)+BfM) 00f(00)=0000 0=00000 01fM) 八(M) 0 f(M) f(M) f(M+M) f(M)+f(M) f(00+00)= f(00)+f(00)= f00.=0000100000 f(00+01)= f(00)+f(01) f01)=10110001010=1010 f(00+10 f(00)+f(10)= J10)=1011(000010=10110 11f(00+1) f(00)+f(11) f11)=01101(0000(010)=0101 f(01+10) f(01)+f(10)= f1)=010(10110+(101)=0101 f(01+11) f(01)+f(11)= 10)=101(1010+(0101)=1011 f(10+11)= f(10)+f(11)= f(01)=10110(1101)+(01101)=10110码 3 的映射关系： αβ f(αM+βM’) αf(M)+βf(M’) 0 0 f(00)=00000 0 = 00000  0 1 f(M’) f(M’) 1 0 f(M) f(M) 1 1 f(M+M’) f(M)+f(M’) f(00+00)= f(00)=00000 f(00)+ f(00)= (00000)+(00000)=00000 f(00+01)= f(01)=10110 f(00)+ f(01)= (00000)+(10110)=10110 f(00+10)= f(10)=11011 f(00)+ f(10)= (00000)+(11011)=10110 f(00+11)= f(11)=01101 f(00)+ f(11)= (00000)+(01101)=01101 f(01+10)= f(11)=01101 f(01)+ f(10)= (10110)+(11011)=01101 f(01+11)= f(10)=11011 f(01)+ f(11)= (10110)+(01101)=11011 f(10+11)= f(01)=10110 f(10)+ f(11)= (11011)+( 01101)=10110