On the Joint Synchronization of Clock Offset and Skew in PBS-Protocol

DOI

10.2991/isrme-15.2015.209How to use a DOI?

Keywords

Time Synchronization; Wireless Senor Networks; Clock Skew/Offset Estimation

Abstract

Joint estimation of clock offset and skew is a very important research for time synchronization. In this paper, we develop a set of energy-efficient clock synchronization algorithms of Wireless Senor Networks(WSNs) based on Pairwise Broadcast Synchronization Protocol(PBS). We formulate the clock offset and skew estimation problem as a linear least squares problem using auxiliary variables and solve the problem by LS and WLS algorithm and obtain the closed-form solution. Then, we compare the mean square error (MSE) of proposed LS, WLS algorithm and MLE. Finally, simulation results demonstrate that the proposed LS algorithm, WLS algorithm are low complexity with the estimation of WLS algorithm achieves higher accuracy.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Wenjing Liu
AU  - Zhi Wang
PY  - 2015/04
DA  - 2015/04
TI  - On the Joint Synchronization of Clock Offset and Skew in PBS-Protocol
BT  - Proceedings of the 2015 International Conference on Intelligent Systems Research and Mechatronics Engineering
PB  - Atlantis Press
SP  - 1001
EP  - 1006
SN  - 1951-6851
UR  - https://doi.org/10.2991/isrme-15.2015.209
DO  - 10.2991/isrme-15.2015.209
ID  - Liu2015/04
ER  -