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- W745710100 abstract "In cognitive radio systems, the sparse assigned frequency bands are opened to secondary users. We consider the sensing of the frequency spectrum for cognitive radios, based on energy detection. It has been shown that the sensing reliability can be improved by using several cooperating cognitive radios that exchange their individual sensing information to a coordinator node. The coordinator node combines the received information in order to make a decision about the primary network presence. In this paper, we propose a decentralized Q-learning algorithm to share the sensing time among the cognitive radios in a way that maximizes the throughputs of the radios. Numerical results show that the algorithm converges faster to the same throughputs as those obtained with a reference algorithm." @default.
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- W745710100 date "2012-03-01" @default.
- W745710100 modified "2023-09-26" @default.
- W745710100 title "Distributed allocation of the spectrum sensing durations for cooperative cognitive radios" @default.
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