IEEE Communications Letters, vol. 9, no. 10, pp. 948-950, October 2005.
This paper proposes a random access based feedback
protocol for achieving multiuser diversity with a fixed
number of feedback slots. Active users send a feedback message
with some probability if their channel power is above a threshold.
The threshold and random access probability are jointly designed
to maximize the average sum rate of all users.
Feedback, multiuser channels, diversity methods, protocols, opportunistic.
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