Patent ID: 6091789
Filing Date: 2000-07-18
Classification: H03D,H04L

Abstract:
A method for deviation determination of a phase shift modulated signal which is modulated according to a modulation method for generating a sequence of phase changes having consecutively the same phase change, the method comprising the following steps:filtering out segments with at least three consecutive values which correspond to phase changes from the phase shift modulated signal,evaluating each filtered-out segment as to whether the segment's consecutive values are effectively the same and if a filtered-out segment's consecutive values are effectively the same, creating a phase-linear segment, otherwise rejecting the filtered-out segment,assigning a phase-linear segment's phase change to a nominal phase change possessed by a phase-linear sequence that a phase-linear segment is judged to be a part of, anddetermining the deviation from nominal phase changes assigned to created phase-linear segments' phase changes and from phase-linear segments' consecutive values.