Precision Improvement of Indoor Wireless Positioning by Considering Clock Offsets and Wireless Synchronization 


Vol. 37,  No. 10, pp. 894-900, Oct.  2012


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  Abstract

Indoor wireless positioning system uses ranging information of beacons in order to precisely estimate a tag location. To estimate distance between each beacons and tag, the system calculates arrival time of a tag pulse with clock of each beacon including independent clock offset. This clock offset seriously affects the performance of ranging and positioning. We propose in this paper a clock offset compensation method to solve this problem. To verify the performance of the proposed method, we simulated location estimation with random clock offset between -1,000ppm and 1,000ppm, and the result shows that the proposed scheme effectively solves the clock offset problem.

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  Cite this article

[IEEE Style]

E. Lim, J. Kang, S. Lee, Y. Park, W. Lee, Y. Shin, "Precision Improvement of Indoor Wireless Positioning by Considering Clock Offsets and Wireless Synchronization," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 10, pp. 894-900, 2012. DOI: .

[ACM Style]

Erang Lim, Jimyung Kang, Soonwoo Lee, Youngjin Park, Woncheol Lee, and Yoan Shin. 2012. Precision Improvement of Indoor Wireless Positioning by Considering Clock Offsets and Wireless Synchronization. The Journal of Korean Institute of Communications and Information Sciences, 37, 10, (2012), 894-900. DOI: .

[KICS Style]

Erang Lim, Jimyung Kang, Soonwoo Lee, Youngjin Park, Woncheol Lee, Yoan Shin, "Precision Improvement of Indoor Wireless Positioning by Considering Clock Offsets and Wireless Synchronization," The Journal of Korean Institute of Communications and Information Sciences, vol. 37, no. 10, pp. 894-900, 10. 2012.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880