| 摘要 |
<p>Disclosed are a data processing device and a data processing method which can improve tolerance to data errors. When an LDPC code having a code length of 4320 bits and a code rate of 1/4 is mapped to 64 signal points determined by 64 QAM, a demultiplexer (25) follows an allocation rule for allocating code bits of an LDPC code to symbol bits which represent symbols. If an i+1th bit from the most significant bit of a 6×2 bit code bit and an i+1th bit from the most significant bit of 6×2 bit symbol bits of two consecutive symbols are respectively represented by bits b#i and y#i, the demultiplexer (25) carries out a replacement wherein b0 is allocated to y11, b1 to y10, b2 to y4, b3 to y5, b4 to y2, b5 to y3, b6 to y8, b7 to y9, b8 to y6, b9 to y7, b10 to y1, and b11 to y0. The present invention can be applied, for example, to a transmission system which transmits an LDPC code.</p> |
