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Clustering Algorithm Research on Mixed Received Signal Strength Sequences #br# of Multiple Nodes on Wireless Sensor Network

  

  1. College of Internet of Things Engineering, Jiangnan University, Wuxi 214122, China
  • Received:2015-11-26 Online:2016-05-24 Published:2016-05-25

Abstract:

It confirms number of unknown nodes without identification by dealing with mixed received signal strength sequences achieved by mobile anchor node, the clustering
results of the mixed received signal strength directly determines the positioning accuracy of unknown nodes on the wireless sensor network. EM algorithm is sensitive to the
initial values. To overcome the drawback above, this paper proposes a three stage iterative processing method, adding front and rear channel to EM algorithm. Kmeans algorithm
is used as front processing channel to improve the selection of initial values on EM algorithm. Bayesian information criterion is employed as the rear processing channel to
improve the accuracy of the clustering. Finally, the simulation result shows that the proposed algorithm can successfully estimate the number of unknown nodes, and achieve
precise received signal strength.

Key words:  , received signal strength; EM algorithm; Kmeans; Bayesian information criterion

CLC Number: