| 摘要 |
In a receiver apparatus, a decoding part (5) executes a single LDPC decoding of a received signal by use of "sum-product algorithm" at a plurality of sample points that are candidates of a sample starting point; a phase error estimating part (6) uses a soft-decision information outputted during the decoding to execute a phase error estimation based on MMSE; a multiplier (4) corrects, based on the result of the estimation, the received signal; and a frame deciding part (7) compares an average (A) of the absolute values of the latest logarithmic likelihood ratios with an average (B) of the absolute values of the immediately preceding logarithmic likelihood ratios to determine whether to terminate the correction processing, and if (B) is equal to or greater than (A), the frame deciding part (7) terminates the correction processing, and thereafter, uses, as the sample start point of the frame, a point corresponding to the maximum value of the averages of the absolute values of the logarithmic likelihood ratios at the candidates of the sample starting point.
|
