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http://dx.doi.org/10.9717/kmms.2012.15.11.1391

Realtime Clock Skew Estimator for Time Synchronization in Wireless Sensor Networks of WUSB and WBAN  

Hur, Kyeong (경인교육대학교 컴퓨터교육과)
Publication Information
Journal of Korea Multimedia Society / v.15, no.11, 2012 , pp. 1391-1398 More about this Journal
Abstract
Time synchronization is crucial in wireless sensor networks such as Wireless USB and WBAN for diverse purposes from the MAC to the application layer. This paper proposes online clock skew estimators to achieve energy-efficient time synchronization for wireless sensor networks. By using recursive least squares estimators, we not only reduce the amount of data which should be stored locally in a table at each sensor node, but also allow offset and skew compensations to be processed simultaneously. Our skew estimators can be easily integrated with traditional offset compensation schemes. The results of simulation and experiment show that the accuracy of time synchronization can be greatly improved through our skew compensation algorithm.
Keywords
Time Synchronization; Skew Estimation; Skew Compensation; Wireless Sensor Networks;
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Times Cited By KSCI : 1  (Citation Analysis)
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