Phase error correction method and receiving apparatus phase error correction circuit, using the same

摘要

PROBLEM TO BE SOLVED: To provide a highly accurate phase correction by stably calculating a correction value for correcting a phase shift from a latter portion of a preamble where the characteristics of a detected signal are stable.;SOLUTION: A detected signal 111 contains at the beginning from the top a preamble which performs symbol alterations and subsequent to the preamble, a unique word section and a data section. A phase rotation section 104 corrects the phase of the detected signal 111 by using an effective correction value 118 obtained at a correction value determination section 103. A correction value calculation section 102 performs calculations of a mean value of the phase shift in the detected signal 111 covering a predetermined length to obtain a correction value 115 each time symbol alteration is detected. The correction value determination section 103 stores a plurality of correction values 115 calculated by the correction value calculating section 102 in time series. The determination section 103 also retains the correction value by going back a predetermined number of correction values among the correction values stored up to that moment and output as the effective correction value 118 to the phase rotation section 104 when the unique word section is detected.;COPYRIGHT: (C)2004,JPO