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公开(公告)号：KR100874958B1
公开(公告)日：2008-12-19
申请号：KR1020070041746
申请日：2007-04-30
Abstract: A layered sum-product decoding method increases a conversion speed of the decoder by propagating the updated information of the variable node quickly. A plurality of inspection nodes and a plurality of variable nodes are defined from the parity check matrix corresponding to the parity check code word. A layer of the plurality of check nodes is determined by using a step recovery order of the punched variable node corresponding to the punched bit of the plurality of variable nodes(S320). The plurality of check nodes are divided into the plurality of sub sets so that the check nodes with the same layer belong to the same sub set(S330). A parity check code word is decoded by using the plurality of sub sets. The step recovery order of the punched variable node represents the repetition frequency required for recovering the punched variable node through the plurality of the check nodes.
Abstract translation: 分层和积解码方法通过快速传播变量节点的更新信息来提高解码器的转换速度。 从对应于奇偶校验码字的奇偶校验矩阵中定义多个检验节点和多个变量节点。 通过使用与多个变量节点的穿孔位对应的穿孔变量节点的步骤恢复顺序来确定多个校验节点的层（S320）。 多个校验节点被分成多个子集，使得具有相同层的校验节点属于同一子集（S330）。 通过使用多个子集来解码奇偶校验码字。 打孔变量节点的步骤恢复顺序表示通过多个校验节点恢复打孔变量节点所需的重复频率。
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