Patent ID: 9294130
Filing Date: 2016-03-22
CPC Classification: H03M

Claim Text:
1. A method of calculating parity information for user information in a low-density parity check (LDPC) encoder based on a parity check matrix H, the method comprising: determining whether the parity check matrix H is full-rank, wherein the parity check matrix H has circulants A, B, C, D, E, and T, where A and C are circulants representing data portions of the parity check matrix H, and B, T, D, and E are circulants representing parity portions of the parity check matrix H; when the parity check matrix H is full-rank: when the parity check matrix H is non-full-rank: storing the encoding matrix in an encoder memory; calculating the parity information by processing the stored encoding matrix with the user information; and generating an information-bearing signal by modulating the user information and the parity information.