Carrier phase recovery techniques

摘要

A phase shifter (20) shifts the phase information of a received signal to form a phase shifted signal defining a corrected phase angle. The shifted signal is processed by Viterbi decoders (36 and 38) and convolutional encoders (40 and 42). The output of the encoders and the phase shifted signals address a phase error read only memory (52) which generates a phase error signal that is used by the phase shifter (20) to reduce the phase error of the received signal. <IMAGE>