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Optimization of DV-hop localization algorithm in hybrid optical wireless sensor networks

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Automatic localization is one of the major issues in Wireless Sensor Networks (WSN). DV-hop algorithm is a well-known localization algorithm in WSN but with limited localization accuracy. In this paper, an improved DV-hop localization algorithm in hybrid optical wireless sensor networks is proposed based on the optimization of the parameters in WSN. Various factors that affect the localization accuracy of the DV-hop algorithm in WSN are investigated, including the communication radius of the node, the number of beacon nodes and the number of the total nodes. As the DV-hop algorithm is applied into hybrid optical sensor and WSNs (O-WSN) with rectangular topology, different parameters have to be optimized accordingly. Simulation results show that the square topology outperforms the rectangle topology more than 45 % under the same network parameters using the improved DV-hop algorithm. Therefore another improved DV-hop called Sub-Square Weighted DV-hop (SSW DV-hop) is proposed for the rectangle topology. Both simulation and experiment results demonstrate that applying the SSW DV-hop algorithmin O-WSNs could significantly improve the localization accuracy.

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The research is supported by the National Natural Science Foundation of China (No. 60972003), the Key Grant Project of Chinese Ministry of Education.(No.313049), and the Key Project of Sichuan Province of China (2011GZ0239). The authors would thank for contributions from Mr. Zhen Zhang and Ms. Jiangtao Liu.

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Correspondence to Lianshan Yan.

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Li, X., Yan, L., Pan, W. et al. Optimization of DV-hop localization algorithm in hybrid optical wireless sensor networks. J Heuristics 21, 177–195 (2015).

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