Patent ID: 6985549

Claim:
A method of timing recovery of symbols in a received signal, comprising the steps of: (a) generating a sequence of samples from the received signal with a sample period and sample phase related to a symbol rate of the symbols; (b) generating a phase error for a current sample from the sequence based on a gradient of a blind cost criterion of Bussgang-class cost functions; (c) adjusting at least one of the sample period and sample phase based on the phase error such that a magnitude of the phase error is driven to a predetermined point; and (d) repeating steps (a), (b), and (c) for subsequent samples so as to substantially recover timing of the symbols in the received signal, wherein step (b) comprises the steps of: (b1) calculating a blind cost error term based on the sample; and (b2) forming an approximation of a derivative of the received signal with respect to the sampling phase.