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In this paper, the authors consider retransmission strategies for centralized cyclic polling-based systems over wireless channels subject to external interference. The considered strategies differ in the time when retransmissions for one particular node are carried out, and in the number of retransmissions that can be carried out for one node. They show experimentally and by simulation that two related strategies introduced in this paper, called the queueing based strategies, significantly outperform the traditional strategy in which all admissible trials towards one node are carried out subsequently in terms of the average number of nodes that cannot be successfully served in a cycle.
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