In this paper, we develop a novel optimal anchors placement strategy tailored for anisotropic WSNs. By resorting to the well-known particle swarm optimization (PSO), we derive the optimal anchors' positions that minimize the average location estimation error (LEE). We show that our placement strategy provides substantial accuracy gains if used instead of the conventional ones and that it is able to reduce not only the average LEE but also the LEE itself and, hence, guarantees high accuracy for any WSN configuration.
['Ahmad El Assaf', 'Slim Zaidi', 'Sofiene Affes', 'Nahi Kandil']
Optimal anchors placement strategy for super accurate nodes localization in anisotropic wireless sensor networks