Patent ID: 6973142

Claim:
A differential phase shift signal receiver comprising: a demodulator comprising a first input to receive a differential phase shift signal, and an output to provide a differential phase shift base-band signal; an analog to digital sampling module comprising an input coupled to the output of the demodulator, and an output to provide a sampled differential phase shift base-band signal; and a synchronization detection module comprising: an input coupled to the output of the analog to digital sampling module; a first output to provide a symbol center sample index that identifies a sample of the sampled differential phase shift base-band signal having a predefined relationship to a center of a received symbol; a second output to provide a sample interval fraction that identifies a fractional portion of a sample period from the sample identified by the symbol center sample index to an estimated center of the received symbol; a phase differential detection module to receive the sampled differential phase shift base-band signal and to produce a sequence of phase differential samples; a signal correlation module responsive to the phase differential detection module, the signal correlation module including a sample correlation module, the sample correlation module having a first input to receive the sequence of phase differential samples and a second input to receive a predetermined synchronization symbol pattern, pattern associated with predetermined synchronization bit pattern, the sample correlation module to produce symbol correlation values; and a timing detection module responsive to the signal correlation module to generate the symbol center sample index and the sample interval fraction.