Patent ID: 7463701

Claim:
A method for recovering symbol synchronization for a serial transmission, the method comprising the steps of: obtaining in-phase and quadrature components of a received digital bitstream, the components including a pilot bitstream embedded therein; storing a copy of the obtained in-phase and quadrature components in a buffer; recovering a version of the pilot bitstream from the obtained components; digitally filtering a received digital bitstream with the spectrum of a pre-determined pilot signal to recover the in-phase component; digitally filtering the quadrature received digital bitstream with the spectrum of the pre-determined pilot signal to recover the quadrature component; computing the absolute values of the in-phase and the quadrature-phase components and forming a sum thereof, the sum being a correlator output; comparing the correlator output to a predefined threshold, and upon favorable comparison, the pilot is considered as detected; applying the timing correction factor to the stored copy of the received components to adjust the symbol timing of the received bitstream; and recovering another version of the pilot bitstream from the copy of the received bitstreams in the buffer based on the adjusted symbol timing.