Patent ID: 6453271
Filing Date: 2002-09-17
Classification: G06F

Abstract:
A method for synchronizing clock signals in a communication system by determining a deviation between a clock signal quantity (Q) and a reference clock signal quantity (Qref) associated with said clock signal quantity, both depending on a predetermined time parameter (t), comprising:measuring N samples (Qi, Qrefi) of said clock signal quantity (Q) and said reference clock signal quantity (Qref) at equally spaced intervals (&tgr;0) of said time parameter (t), N being an integer with N&gE;3, calculating and storing N difference values xi between each sample of said clock signal quantity (Qi) at each sample of said reference clock signal quantity (Qrefi) and each of said N sample points, the index i being an integer running from 1 to N, calculating a value w1 as a function of said difference values xi, calculating a value R representative of the variation between said clock signal quantity and said reference clock signal quantity as R=w12+&Sum;j=2N-3&it;n+1&it;wj2where n is an integer from the set of 1 to the integer part of N/3, and each value wj with j>1 is calculated recursively from the previous value wjâˆ’1 and as a function of said difference values xi, if n is smaller than the integer part of N/3, andcalculating said value R as R=w12 if n is equal to the integer part of N/3.