| 摘要 |
A channel condition detecting unit detects a condition of a channel between a transmitting apparatus and a receiving apparatus, in accordance with a pilot signal. A reference check matrix employed for LDPC coding in the transmitting apparatus is stored in the check matrix reconstructing unit. The check matrix reconstructing unit reconstructs the reference check matrix in accordance with a detection result of the channel condition detecting unit. An LDPC decoding unit obtains a probability value of each of bits in the receive data by executing the LDPC decoding operation based on a check matrix supplied from the check matrix reconstructing unit, for a likelihood value of each of the bits in an encoded bit sequence input from a detecting unit. A hard decision unit subjects a probability value of each of bits in the receive data to hard decision and obtains the receive data.
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