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In wireless broadcasting systems, multiple retransmissions are commonly employed to guarantee the correct reception of each packet. The traditional hybrid automatic retransmission request protocol retransmits one packet per slot. Hence, a large amount of retransmissions is required to correctly receive all the packets, which leads to low spectrum efficiency. In this paper, we propose an Opportunistic...
As energy constrained networks, wireless sensor networks (WSNs) are composed of sensor nodes typically powered by batteries, for which replacement or recharging for these batteries is very difficult. So it is important to make the best use of the batteries to prolong the lifetime of the networks. With this objective in mind, a cooperative automatic retransmission request (CARQ) protocol is introduced...
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