Computer Science – Information Theory
Scientific paper
2012-01-31
Computer Science
Information Theory
4 pages, 2 figures, ICASSP 2012
Scientific paper
The problem of clock offset estimation in a two-way timing exchange regime is considered when the likelihood function of the observation time stamps is exponentially distributed. In order to capture the imperfections in node oscillators, which render a time-varying nature to the clock offset, a novel Bayesian approach to the clock offset estimation is proposed using a factor graph representation of the posterior density. Message passing using the max-product algorithm yields a closed form expression for the Bayesian inference problem.
Ahmad Aitzaz
Serpedin Erchin
Vangelista Lorenzo
Zennaro Davide
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