| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a decoder and receiving apparatus for correcting the data error of digital transmission by using a predetermined likelihood table. <P>SOLUTION: The LDPC (Low Density Parity Check) decoder 50 comprises: a pilot signal extracting section 52 for extracting, from a signal demodulated in accordance with a demodulation scheme, a pilot signal to be periodically transmitted with a signal point arrangement specified beforehand; and a second signal point generating section 56 for comparing a first signal point arrangement representing signal points of the extracted pilot signal with an ideal signal point arrangement specified with predetermined transmission-side signal points, calculating a deviation between the first signal point arrangement and the ideal signal point arrangement for each symbol, and generating a second signal point arrangement by correcting the relevant deviation for the first signal point arrangement. <P>COPYRIGHT: (C)2010,JPO&INPIT |
