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0(000)
1(001)
2(010)
3(011)
4(100)
5(101)
6(110)
7(111)
0(000)
1(001)
2(010)
3(011)
4(100)
5(101)
6(110)
7(111)
0
0
1
1
1
0
1
0
input bit = 0
input bit = 1
1
0
1
0
0
1
0
1
Convolutional coding: trellis example
8 states
K=4, k/n=1/2
t = 0
t = 1
t = 2
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