Patent ID: 8358727
Filing Date: 2013-01-22
Classification: H03L,H04L

Abstract:
1. A wireless apparatus comprising: a sampling unit for sampling an input signal in accordance with a plurality of different intervals from each other, said sampling unit comprises: a variable delaying device for changing said plurality of sampling intervals, said variable delaying device comprises: a phase error calculating unit for calculating a phase error by employing an amplitude difference among a plurality of sampled values sampled by said sampling unit; a synchronous status judging unit for judging a synchronous status by employing the phase error calculated by said phase error calculating unit; and said delay amount control unit for changing a delay amount of said variable delaying device based upon both the phase error calculated by said phase error calculating unit and the synchronous status judged by said synchronous status judging unit, wherein said delay amount control unit comprises a plurality of waveform tables corresponding to a waveform of said input signal, said delay amount control unit predicts the waveform of said input signal so as to select a predetermined waveform table corresponding to the waveform of said input signal, and refers to the selected waveform table so as to control said first sampling timing and said second sampling timing, wherein said phase error calculating unit calculates said phase error by detecting an amplitude difference between a first sampled value sampled by said first sampling unit, and a second sampled value sampled by said second sampling unit, said delay amount control unit changes the delay amounts of said first and second variable delaying devices based upon the phase error calculated by said phase error calculating unit and the synchronous status judged by said synchronous status judging unit, and said delay amount control unit comprises a waveform predicting unit which defines the amplitude information acquired at said first and second sampling timing as a parameter of the prediction, said waveform predicting unit is arranged by: