Patent ID: 6522696
Filing Date: 2003-02-18
Classification: H04L

Abstract:
A method for reducing frequency offset errors in a communications system, said method comprising the steps of:receiving a plurality of signal bursts, each signal burst containing a plurality of signals; decoding said plurality of received signal bursts by employing an equalizer; generating a plurality of burst quality indication signals each burst quality indication signal corresponding to the bit error rate in each of said plurality of received signal bursts; generating a plurality of residual frequency offset signals, each of said plurality of generated residual frequency offset signals corresponding to one of said plurality of received signal bursts; accumulating said plurality of residual frequency offset signals having acceptable burst quality indication signals; acquiring a rotation frequency offset signal based on said plurality of accumulated residual frequency offset signals; and adjusting the phase of each of said plurality of signals in said plurality of received signal bursts in accordance with said rotation frequency offset signal.