Patent ID: 8036332

Claim:
An apparatus comprising: a band-edge filtering arrangement operable to receive as inputs samples of a received communication signal, and to provide a filtered output signal comprising band edges of the samples, the received communication signal comprising symbols and the samples comprising samples of the communication signal according to receive symbol timing; a down converter operatively coupled to the band-edge filtering arrangement and operable to convert the filtered output signal to baseband by multiplying the filtered output signal by quadrature carrier waveforms; and a symbol timing phase error calculator operatively coupled to the down converter and operable to calculate a phase error of the receive symbol timing based on the down converted baseband signal, the symbol timing phase error calculator determining a sign of a product of the filtered output signal and one of the quadrature carrier waveforms, and comprising a multiplier for multiplying the product of the filtered output signal and another of the quadrature carrier waveforms by the determined sign.