Orthogonal decompositions for L?evy processes with an application to the gamma

There is disclosed an electrical circuit arrangement for phase-synchronizing a first pulse train with a second pulse train, in which the algebraic phase difference between each pulse of one pulse train and the next pulse of the other pulse train is measured for each of a predetermined number of pulses of one of the pulse trains. The algebraic average phase difference is then determined over the said predetermined number of pulses, and the absolute phase of the pulses of the first pulse train is then adjusted in correspondence with the average phase difference so as to bring the two pulse trains closer into phase equality.