Data processing device and data processing method

摘要

The present invention pertains to a data processing device and a data processing method which enable the ensuring of excellent communication quality in data transmission using an LDPC code. Four sign bits of an LDPC code with a code length of 16200 bits and a code rate of 7/15 are treated as one symbol, and the symbol is mapped on any of 16 signal points determined by 16-APSK. The 16 signal points determined by 16-APSK are four signal points on an inner ring and 12 signal points on an outer ring, the radius ratio of the outer ring and the inner ring being 5.25. The present invention can be applied, for example, to cases in which data transmission is performed using an LDPC code.