循环冗余检验的原理说明.pdf
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M
1101010110 Q
P 110101 101000110100000 2rM
110101
111011
G(X) 110101 X r M(X)
111010
110101
111110
110101
101100
110101
110010
110101
01110 R R(X)
G(X )
1 G(X )X+1)
2 G(X ) X1
r+1 2−(r −1)
r+1 2−r
3 G(X ) X
0L X L +1
CRC
r =16
16
99.997%17
99.998%18
G(X )
CRC _ 12 X 12 +X 11 +X 3 +X 2 +X +1
CRC _ 16 X 16 +X 15 +X 2 +1
CRC _ CCITT X 16 +X 12 +X 5 +1
FCS
FCS
(Frame Check Sequence)
CRC FCS
CRC FCS
FCS CRC CRC
FCS
CRC
(accep
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