Patent ID: 8448049
Filing Date: 2013-05-21
Classification: H03M,H04L

Abstract:
1. A receiving apparatus comprising: reception means for receiving a code sequence coded in low density parity check and punctured at least partially as a target to be decoded; and low density parity check decoding means for performing a punctured matrix transform process including a first and a second process on an original parity check matrix noted to have punctured bits or symbols and used in the low density parity check coding, said low density parity check decoding means further performing said first process to carry out Galois field addition operations on those rows of said original parity check matrix which share non-zero elements with those columns of said original parity check matrix which correspond to said punctured bits or symbols in order to set said non-zero elements to zero, said low density parity check decoding means further performing said second process to delete the columns rid of said non-zero elements in said first process, said low density parity check decoding means further using the matrix resulting from said punctured matrix transform process as the parity check matrix for performing a low density parity check decoding process on said code sequence received by said reception means.