%0 Journal Article
%T Comments on "IEEE 1588 Clock Synchronization using Dual Slave Clocks in a Slave"
%A Kyeong Soo Kim
%J Computer Science
%D 2014
%I arXiv
%R 10.1109/LCOMM.2014.2317738
%X In the above letter, Chin and Chen proposed an IEEE 1588 clock synchronization method based on dual slave clocks, where they claim that multiple unknown parameters --- i.e., clock offset, clock skew, and master-to-slave delay --- can be estimated with only one-way time transfers using more equations than usual. This comment investigates Chin and Chen's dual clock scheme with detailed models for a master and dual slave clocks and shows that the formulation of multi-parameter estimation is invalid, which affirms that it is impossible to distinguish the effect of delay from that of clock offset at a slave even with dual slave clocks.
%U http://arxiv.org/abs/1404.1311v2