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The node localization process of the traditional DV-Hop scheme is sensitive to the heterogeneity of network topology, and the robustness of the scheme is poor while the network topology is diversiform due to random node deployment. Aiming at such a problem, an improvement strategy is put forward, and different treatment algorithms are introduced in the distance estimation step and the position calculation...
DV-Hop is one of the most widely-used node localization schemes for WSNs. Some improvement is taken over the original DV-Hop scheme to enhance its localization accuracy in this work. The modified DV-Hop scheme uses a combination of Min-max and Steepest Descend method as the node position derivation algorithm to replace Lateration which is used in the original scheme. Simulation shows that the modified...
A node position derivation algorithm called IR for WSNs is developed in this paper. IR is an iterative algorithm based on node-beacon distance information. It is assumed that each sensor node can connect with several beacons by one-hop or multihop and estimate the node-beacon distances, and then, the algorithm is executed in a distributed mode. Simulation is provided to compare our proposed algorithm...
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