METHOD OF ENCODING AND DECODING USING LOW DENSITY PARITY CHECK MATRIX

摘要

A method of encoding and decoding using an LDPC code is disclosed, by which encoding and decoding performance can be enhanced and which can be effectively applied to a communication system employing a variable data rate. In encoding or decoding an input data using a parity check matrix H, the present invention is characterized in that the parity check matrix H has a configuration of H=[H_dI H_p] (H is (n-k) xn dimensional, k is a bit number of the input data, and n is a bit number of a codeword) , wherein the parity check matrix H includes a first part having a column weight of wc and a second part having a column weight of W_c+W_a (W_a/ W_c ? 0) .