Clock synchronization based on pulse with propagation delay eliminated in wireless sensor networks

Autor:	Wei Liu, Ruijie Fan, Yiyuan Mai, Zehan Wan
Jazyk:	angličtina
Rok vydání:	2023
Předmět:	distributed algorithms frequency estimation parameter estimation phase estimation wireless sensor networks Telecommunication TK5101-6720
Zdroj:	IET Communications, Vol 17, Iss 17, Pp 1955-1961 (2023)
Druh dokumentu:	article
ISSN:	1751-8636 1751-8628
DOI:	10.1049/cmu2.12662
Popis:	Abstract Clock synchronization is indispensable for numerous applications of wireless sensor networks (WSNs). When no common reference clock is available, the nodes must employ distributed synchronization techniques. This paper proposes, a distributed pulse‐based clock synchronisation approach, wherein the propagation delay is eliminated through signal ping‐pongs between neighbouring nodes. Such an approach can jointly estimate the clock skew and offset without requiring any reference clock. The whole synchronization process is completed at the physical (PHY) layer, effectively avoiding the random delay caused by packet queuing and retransmission. Simulation results show that the proposed approach can achieve higher synchronization accuracy compared with other existing methods.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1cce42f2a34545e48e1d5caf2d0a9f59 Zobrazit plný text záznamu Plný text View record in DOAJ