Abstract
Wireless Highway Addressable Remote Transducer (HART) uses Time Division Multiple Access (TDMA) and channel hopping to communicate between devices. So it is important to keep high accurate time synchronization for a wireless network. This paper proposes a closed-loop adjusting strategy for time synchronization (CATS) which deals with the dramatic variation of oscillator drift rates. CATS is based on double sampling periods, i.e., a synchronization period and an adjusting period. The variation of relative drift rate between different nodes is estimated in the synchronization period. The closed-loop control law is carried out in the adjusting period, which is derived from the estimator of relative drift rate variation. The experimental results indicate that CATS achieves almost the same accuracy as the flooding time synchronization protocol (FTSP) with the regression table of 8(FTSP-8), and it outperforms FTSP-16. Furthermore, it's revealed that CATS achieves lower computational complexity and stronger environmental adaptation than FTSP does.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
