| 摘要 |
PROBLEM TO BE SOLVED: To provide a digital signal receiver capable of reducing memory capacity required for deinterleaving signals, transmitted using an orthogonal frequency division multiplexing (OFDM) system. SOLUTION: The digital signal receiver 4000 includes a pre-demapping section 26 which generates a pre-demapping data, specifying a reference point and a deviation from the reference point on the corresponding constellation according to a signal modulation method, based on the output from an FFT section 14. A reliability decision and correction section 29 corrects data, specifying a deviation amount corresponding to the reliability information, based on the pre- demapping data and the reliability information obtained from a reliability detection section 28. The reliability decision and correction section 29 then performs a data conversion, so as to include a part of the reliability information into the pre-demapping data, and outputs the converted data to a deinterleave section 17.
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