Building codes for irregular LDPC codes with good performance Shortened

摘要

A method for encoding generating parity check bits (p0, ..., pm-1) based on unconjunto symbol parity check low current density s = (s0, ..., sk-L-1 ), comprising elmétodo the steps of: acquiring an L value; obtain the current symbol set s of = (s0, ..., sk-L-1) of length (kL); obtain a vector s with zeros padding information length k by zero padding the current set desímbolos with L zeros, where L 0; using a matrix H and vector s filling information by zero padding to determine the parity bits decomprobación of where H comprises a section H1 and H2 and H1 section has size m k H2tiene size m by m; and transmitting the parity check bits along with the current symbol set s of = (s0, ..., sk-L-1); wherein H1 consists of two sub-matrices; comprising one of the two sub-matrices columns having a first weight column and columns tienenun second weight column, the first weight column different from the second weight column estandolas columns of the first weight column and the columns of the second substancialmenteentrelazados weight column in sub-array; and comprising the other of the two sub-matrices columns having the first weight column and columns quetienen the second weight column, while the columns of the weight column and columns segundopeso substantially column interlaced in the sub-matrix.