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Channel Capacity and the Coding Theorem
How much a noisy channel can carry, the proof that the rate is achievable, and why feedback does not raise it.
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A packet fails with probability
q
=
0.2
q = 0.2
q
=
0.2
on each attempt, independently. What is the expected number of transmissions under stop-and-wait ARQ?
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q
( )
x
n
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AC
7
8
9
+
4
5
6
−
1
2
3
×
0
.
a
b
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