METHOD AND APPARATUS FOR PARALLEL CONCATENATED LDPC CONVOLUTIONAL CODES ENABLING POWER-EFFICIENT DECODERS

摘要

A method of encoding includes receiving input systematic data including an input group (xz(n)) of Z systematic bits. The method includes generating an LDPC base code using the input group (xz(n)). The LDPC base code is characterized by a row weight (Wr), a column weight (Wc), and a first level lifting factor (Z). The method includes transforming the LDPC base code into a Trellis-based Quasi-Cyclic LDPC (TQC-LDPC) convolutional code. The method includes generating a Parallel Concatenated TQC-LDPC convolutional code in a form of an H-matrix including a systematic submatrix (Hsys) of the input systematic data and a parity check submatrix (Hpar) of parity check bits, wherein the Hpar includes a column of Z-group parity bits. The method includes concatenating the Hpar with each column of systematic bits, wherein the Hpar includes J parity bits per systematic bit.