Multiple transmission power localization algorithms in wireless sensor networks based on support vector machines

Abstract

Localization in wireless sensor networks is the problem of estimating the geographical locations of wireless sensor nodes. We propose a framework to utilizing multiple data sources for localization scheme based on Support Vector Machines. The framework can be used with both classification and regression formulation of Support Vector Machines. The proposed method uses only connectivity information, i.e. hop count data. Multiple hop count data sources can be generated by adjusting the transmission power of wireless sensor nodes to change the communication ranges. The optimal choice of communication ranges can be determined by evaluating mutual information between hop count data and nodes’ location. We consider two methods for integrating multiple data sources together; unif method and align method. The improved localization accuracy of the proposed framework is verified by simulation study.