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In this paper, we propose a novel cooperative node selection scheme in wireless sensor networks that operate in energy-constrained environment. This scheme can obtain higher energy efficiency than the traditional cooperative transmission, which only considers the residual energy of intra-cluster nodes or the channel condition. Our proposed scheme will combine the residual energy with the link quality...
For communication between the cluster head node (CHN) and the distant data fusion center (DFC) with the cooperation of intra-cluster nodes in wireless sensor networks (WSNs), reliable handling of packets by the cooperative node (CN) is difficult to ensure. In this paper, we propose a novel CN selection scheme based on trust for WSNs. This scheme can choose one of high trust nodes to assist in the...
Energy is the vital source for the UWB-Ad hoc system. For the characteristics of UWB-Ad hoc system, it has some particular requests to the MAC layer. Accordingly, it is necessary to find out the affection of MAC protocols to the performance of UWB-Ad hoc system. In this paper, kinds of MAC protocols that are all rate-controlled were studied. And performance curves were gotten. Also, a general model...
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