Method for reducing a phase noise introduced in a resynchronisation of digital signals using justification, and integrated circuits for the implementation of such a method

摘要

Phase noise occurs in data and/or voice transmission due to re-synchronization by justification of digital signals. Such phase noise can be reduced by comparing the phases of a local clocking and a remote clocking to obtain a comparison signal, modifying the comparison signal by a suitable scale factor, quantisinging the modified comparison signal with a suitable frequency, integrating the quantised signal with a suitable step, and deciding the justification events which are to be overlapped on a local unjustified clocking in accordance with transitions of the quantized signal and with justification opportunities as foreseen by the frame formate used.