To provide a matrix generation method, a matrix generation device, and an encoding and decoding device for generating a matrix for constituting an LDPC (low density parity check) code of which an encoding circuit and decoding circuit are structured simply. 符号化回路及び復号化回路の構造が簡単なLDPC符号を構成できる行列を生成する行列生成方法、行列生成装置及び符号化復号化装置を提供する。 - 特許庁