Patent ID: 8149975

Claim:
A system for identifying at least one phase transition in a phase-shift keying signal comprising a plurality of data samples corresponding to phase values, the system comprising: a memory operable to store computing device executable instructions; and a computing device operable to— generate a first falling edge region function for each data sample; generate a first rising edge function for each data sample; generate a first level function for each data sample; generate a second falling edge function for each data sample, wherein the second falling edge function equals the first falling edge function if the first falling edge function is greater than the first rising edge function and the first level function, and the second falling edge function equals zero otherwise; generate a second rising edge function for each data sample, wherein the second rising edge function equals the first rising edge function if the first rising edge function is greater than the first falling edge function and the first level function, and the second rising edge function equals zero otherwise; and determine the data sample regions in which the peak values of the second falling edge function and the second rising edge function occur.