| 摘要 |
PROBLEM TO BE SOLVED: To improve immunity to an error of data such as an LDPC code. SOLUTION: When a data processing apparatus maps the LDPC code whose code length is 4,320 bits and whose encoding rate is 1/4 to 64 signal points defined by 64QAM, a demultiplexer 25 performs replacement for allocating, when 6×2 bit code bits and (i+1)th bits from the most significant bit of symbol bits of 6×2 symbol bits of two successive symbols are denoted as bits b#i and y#i, respectively, b0 to y11, b1 to y10, b2 to y2, b3 to y3, b4 to y4, b5 to y5, b6 to y6, b7 to y7, b8 to y8, b9 to y9, b10 to y1, and b11 to y0, according to an allocation rule for allocating code bits of the LDPC code to the symbol bits representing the symbols. For example, the data processing apparatus is applicable to a transmission system that transmits the LDPC code etc. COPYRIGHT: (C)2011,JPO&INPIT
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