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Heterogeneous wireless sensor networks are more similar to the reality. An improved scheme of SEP(stable election protocol) is proposed in this paper. Similarly, the node with more energy will have more probability in the phase of electing cluster head firstly. Then, virtual cluster head is designed after cluster formation phase based on SEP. During the data transmission phase, virtual cluster head...
Based on the heterogeneous wireless sensor networks, MIMO_SEP scheme is proposed in this paper. When the node runs for cluster-head, the node with different energy would have different probability. At the same time cooperating nodes were designed which form virtual Multiple input multiple output with cluster head to transmit data. MIMO_SEP not only could better handle the heterogeneous energy capacities,...
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