Journal of information and communication convergence engineering

The Korea Institute of Information and Commucation Engineering (한국정보통신학회)
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NLOS Signal Effect Cancellation Algorithm for TDOA Localization in Wireless Sensor Network

  • Kang, Chul-Gyu (Department of Electric and Electronic Engineering, Korea University of Industry and Education) ;
  • Lee, Hyun-Jae (Information Technology Engineering, Korea University of Technology and Education) ;
  • Oh, Chang-Heon (School of Information Technology, Korea University of Technology and Education)
  • Received : 2010.03.15
  • Accepted : 2010.03.28
  • Published : 2010.04.30
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Abstract

In this paper, the iteration localization algorithm that NLOS signal is iteratively removed to get the exact location in the wireless sensor network is proposed. To evaluate the performance of the proposed algorithm, TDOA location estimation method is used, and readers are located on every 150m intervals with rectangular shape in $300m{\times}300m$ searching field. In that searching field, the error distance is analyzed according to increasing the number of iteration, sub-blink and the estimated sensor node locations which are located in the iteration range. From simulation results, the error distance is diminished according to increasing the number of the sub-blink and iteration with the proposed location estimation algorithm in NLOS environment. Therefore, to get more accurate location information in wireless sensor network in NLOS environments, the proposed location estimation algorithm removing NLOS signal effects through iteration scheme is suitable.

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References

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