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

fYear

2009

fDate

12-16 Oct. 2009

Firstpage

1

Lastpage

6

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ISPCS.2009.5340197

Filename

5340197