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To solve the problem that the localization accuracy of centroid algorithm depends heavily on the anchor density, an improved centroid algorithm based on possible position set is proposed. Firstly, the unknown node uses centroid algorithm to obtain a square region and then searches its possible position set in the square region. Finally, the centroid of all possible positions is the estimated coordinate...
The inherent characteristics of Wireless Sensor Network (WSN) make node localization become a major challenge. A high-precision weighted Bounding Box (HPWB) algorithm is proposed to improve the localization accuracy of original Bounding Box algorithm. In HPWB algorithm, unknown nodes are divided into three categories according to the number of neighbor anchors. As for nodes in category one, a weighted...
As increasing research effort has been made, pervasive computing is on the step closer to realization. Recent technologies have allowed smaller-scale computational devices with characteristics such as low-cost production, low energy consumption and wireless communication to capture and manage information. The technologies of Wireless Sensor Networks (WSN) and Radio Frequency Identification (RFID)...
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