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Multiple-Access and Broadcast Channels
Many senders into one receiver, and one sender to many receivers: capacity regions rather than a single number.
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Gaussian superposition coding with
P
=
10
P=10
P
=
10
and
α
=
0.5
\alpha = 0.5
α
=
0.5
,
where
X
=
U
+
V
X = U+V
X
=
U
+
V
and
U
U
U
carries the coarse layer. Give the power
α
P
\alpha P
α
P
of the cloud centres.
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x
n
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AC
7
8
9
+
4
5
6
−
1
2
3
×
0
.
a
b
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