Kalman filter based phase-locked loop with re-encoding based phase detector

A wireless communications device comprising:

• a receiver comprising:
• a phase detector configured to provide an error signal generated based on a baseband version of a received radio frequency signal and an expected transmitted data signal;
• a phase-locked loop configured to generate an error correction signal based on a phase of the error signal and a predicted instantaneous phase of the error signal;
• and
• a correction circuit configured to provide a corrected baseband version of the received radio frequency signal based on the baseband version of the received radio frequency signal and the error correction signal.

A method for recovering data tracking frequency and phase offset in a receiver, the method comprising:

• generating a recovered signal based on error between a reference signal and a baseband version of a received radio frequency signal;
• and
• generating the reference signal based on a preliminary decision of a modified Viterbi decoder,
• wherein generating the recovered signal comprises:
• correcting the baseband version of the received radio frequency signal using an estimate of the frequency and phase offset generated by a Kalman filter based phase-locked loop.