Title :
Clock synchronization based on distributed hidden state estimation
Author :
Na, Chongning ; Scheiterer, Ruxandra Lupas ; Obradovic, Dragan ; Nossek, Josef A.
Author_Institution :
Inf. & Commun., Siemens AG, Munich, Germany
Abstract :
This paper presents a novel clock synchronization algorithm based on the transparent clock mechanism of peer-to-peer precision time protocol. To model the dynamics of the oscillator and the influence of the uncertainties, e.g., random stamping and quantization errors, on the synchronization performance, clock synchronization is formulated as a probabilistic inference problem which can be solved by a distributed hidden state estimation method such as the sum-product algorithm. The performance of this approach is verified by numerical results.
Keywords :
clocks; computerised instrumentation; inference mechanisms; probability; protocols; state estimation; synchronisation; clock synchronization; distributed hidden state estimation; peer-to-peer precision time protocol; probabilistic inference problem; quantization errors; random stamping; sum-product algorithm; Clocks; Inference algorithms; Oscillators; Peer to peer computing; Protocols; Quantization; State estimation; Sum product algorithm; Synchronization; Uncertainty;
Conference_Titel :
Precision Clock Synchronization for Measurement, Control and Communication, 2009. ISPCS 2009. International Symposium on
Conference_Location :
Brescia
Print_ISBN :
978-1-4244-4391-8
Electronic_ISBN :
978-1-4244-4392-5
DOI :
10.1109/ISPCS.2009.5340197
