The Open Electrical & Electronic Engineering Journal

2016, 10 : 80-87
Published online 2016 August 31. DOI: 10.2174/1874129001610010080
Publisher ID: TOEEJ-10-80

RESEARCH ARTICLE
 A Non-Parametric Propagation Condition Identification Method and Non-Line of Sight Mitigation Algorithm for Wireless Sensor Network

Hao Chu, * and Cheng-dong Wu

* Address correspondence to this author at the School of Information Science and Engineering, Northeastern University, Wenhua Street, Shenyang, Liaoning, 110819, China; Tel: 086-13940409466; E-mail: chuhao_neu@163.com

ABSTRACT

The wireless sensor network (WSN) has received increasing attention since it has many potential applications such as the internet of things and smart city. The localization technology is critical for the application of the WSN. The obstacles induce the larger non-line of sight (NLOS) error and it may decrease the localization accuracy. In this paper, we mainly investigate the non-line of sight localization problem for WSN. Firstly, the Pearson's chi-squared testing is employed to identify the propagation condition. Secondly, the particle swarm optimization based localization method is proposed to estimate the position of unknown node. Finally the simulation experiments are implemented. The simulation results show that the proposed method owns higher localization accuracy when compared with other two methods.

Keywords:

Localization, Non-line of sight, Oearson's chi-squared testing, Propagation condition identification, Wireless sensor network.