10位并行解扰码算法推导.docVIP

10位并行解扰码算法推导 扰码多项式: 输入数据:D0..D9(先D0，最后D9) 初始状态:R1..R9=X1..X9,R0=X0 推导过程如下： 1.按串行解扰码，第一次打入数据(D0)后: R1=D0 -----@表示“异或” R2=X1 R3=X2 R4=X3 R5=X4 R6=X5 R7=X6 R8=X7 R9=X8 R0=X9 @ D0 @ X5 2.第二次打入数据(D1)后: R1 =D1 R2 =D0 R3 =X1 R4 =X2 R5 =X3 R6 =X4 R7 =X5 R8 =X6 R9 =X7 R0 =X8 @ D1 @ X4 r1 =X9 @ D0 @ X5 r2 =X0 r3 =X1 r4 =X2 r5 =X3 r6 =X4 r7 =X5 r8 =X6 r9 =X7 3.第三次打入数据(D2)后: R1 =D2 R2 =D1 R3 =D0 R4 =X1 R5 =X2 R6 =X3 R7 =X4 R8 =X5 R9 =X6 R0 =X7 @ D2 @ X3 r1 =X8 @ D1 @ X4 r2 =X9 @ D0 @ X5 r3 =X0 r4 =X1 r5 =X2 r6 =X3 r7 =X4 r8 =X5 r9 =X6 4.第四次打入数据(D3)后: R1 =D3 R2 =D2 R3 =D1 R4 =D0 R5 =X1 R6 =X2 R7 =X3 R8 =X4 R9 =X5 R0 =X6 @ D3 @ X2 r1 =X7 @ D2 @ X3 r2 =X8 @ D1 @ X4 r3 =X9 @ D0 @ X5 r4 =X0 r5 =X1 r6 =X2 r7 =X3 r8 =X4 r9 =X5 5.第五次打入数据(D4)后: R1 =D4 R2 =D3 R3 =D2 R4 =D1 R5 =D0 R6 =X1 R7 =X2 R8 =X3 R9 =X4 R0 =X5 @ D4 @ X1 r1 =X6 @ D3 @ X2 r2 =X7 @ D2 @ X3 r3 =X8 @ D1 @ X4 r4 =X9 @ D0 @ X5 r5 =X0 r6 =X1 r7 =X2 r8 =X3 r9 =X4 6.第六次打入数据(D5)后: R1 =D5 R2 =D4 R3 =D3 R4 =D2 R5 =D1 R6 =D0 R7 =X1 R8 =X2 R9 =X3 R0 =X4 @ D5 @ D0 r1 =X5 @ D4 @ X1 r2 =X6 @ D3 @ X2 r3 =X7 @ D2 @ X3 r4 =X8 @ D1 @ X4 r5 =X9 @ D0 @ X5 r6 =X0 r7 =X1 r8 =X2 r9 =X3 7.第七次打入数据(D6)后: R1 =D6 R2 =D5 R3 =D4 R4 =D3 R5 =D2 R6 =D1 R7 =D0 R8 =X1 R9 =X2 R0 =X3 @ D6 @ D1 r1 =X4 @ D5 @ D0 r2 =X5 @ D4 @ X1 r3 =X6 @ D3 @ X2 r4 =X7 @ D2 @ X3 r5 =X8 @ D1 @ X4 r6 =X9 @ D0 @ X5 r7 =X0 r8 =X1 r9 =X2 8.第八次打入数据(D7)后: R1 =D7 R2 =D6 R3 =D5 R4 =D4 R5 =D3 R6 =D2 R7 =D1 R8 =D0 R9 =X1 R0 =X2 @ D7 @ D2 r1 =X3 @ D6 @ D1 r2 =X4 @ D5 @ D0 r3 =X5 @ D4 @ X1 r4 =X6 @ D3 @ X2 r5 =X7 @ D2 @ X3 r6 =X8 @ D1 @ X4 r7 =X9 @ D0 @ X5 r8 =X0 r9 =X1 9.第九次打入数据(D8)后: R1 =D8 R2 =D7 R3 =D6 R4 =D5 R5 =D4 R6 =D3 R7 =D2 R8 =D1 R9 =D0 R0 =X1 @ D8 @ D3 r1 =X2 @ D7 @ D2 r2 =X3 @ D6 @ D1 r3 =X4 @ D5 @ D0 r4 =X5 @ D4 @ X1 r5 =X6 @ D3 @ X2 r6 =X7 @ D2 @ X3 r7 =X8 @ D1 @ X4 r8 =X9 @ D0 @ X5 r9 =X0 10.第十次打入数据(D9)后: R1 =D9 R2 =D8 R3 =D7 R4 =D6 R5 =D5 R6 =D4 R7 =D3 R8 =D2 R9 =D1 R0 =D0 @ D9 @ D4 r1 =X1 @ D8 @ D3 r2 =X2 @ D7 @ D2 r3 =X3 @ D6 @ D1 r4 =X4 @ D5 @