| 摘要 |
An embodiment of the present invention provides an apparatus, comprising a transceiver capable of a unified quasi-cyclic low-density parity-check structure for variable code rates and sizes using a unified base matrix definition. This base matrix definition may be a concatenation of multiple square matrices <?in-line-formulae description="In-line Formulae" end="lead"?>S<SUB>mxRm</SUB>=(S<SUB>mxm</SUB><SUP>R</SUP>|S<SUB>mxm</SUB><SUP>R-1</SUP>| . . . |S<SUB>mxm</SUB><SUP>3</SUP>|S<SUB>mxm</SUB><SUP>2</SUP>|S<SUB>mxm</SUB><SUP>1</SUP>) <?in-line-formulae description="In-line Formulae" end="tail"?> and the base matrix for rate (r-1)/r may be <?in-line-formulae description="In-line Formulae" end="lead"?>S<SUB>mxrm</SUB>=(S<SUB>mxm</SUB><SUP>r</SUP>|S<SUB>mxm</SUB><SUP>r-1</SUP>| . . . |S<SUB>mxm</SUB><SUP>3</SUP>|S<SUB>mxm</SUB><SUP>2</SUP>|S<SUB>mxm</SUB><SUP>1</SUP>) <?in-line-formulae description="In-line Formulae" end="tail"?> for r=2,3, . . . , R.
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