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    • 2. 发明申请
    • BELIEF PROPAGATION DECODER CANCELLING THE EXCHANGE OF UNRELIABLE MESSAGES
    • BELIEF传播解码器取消交换信息
    • WO2005053164A1
    • 2005-06-09
    • PCT/EP2004/013343
    • 2004-11-24
    • MATSUSHITA ELECTRIC INDUSTRIAL CO.,LTD.GOLITSCHEK EDLER VON ELBWART, AlexanderWENGERTER, Christian
    • GOLITSCHEK EDLER VON ELBWART, AlexanderWENGERTER, Christian
    • H03M13/11
    • H03M13/1125H03M13/1111H03M13/1117H03M13/112H03M13/3723H03M13/658
    • The present invention relates a method and a decoder for decoding codewords, the decoding being performed as message passing on a graph representation of the code, e.g. on low density parity-check (LDPC) code, wherein for each non-zero entry in a parity check matrix, the message matrix elements of a first message matrix are initialized with data obtained from a demodulator, and the elements of a second message matrix are determined based on message matrix elements of said first message matrix. Further, a decoded codeword is reconstructed based on the data obtained from the demodulator and the matrix elements of the second matrix. Moreover the present invention relates to and to a communication system, a mobile terminal and a base station comprising the decoder. To reduce the influence of wrong information the decoding method uses subset of matrix elements from said first/second matrix for determining a matrix element of said second/first matrix, wherein the matrix elements of said subset fulfill a reliability criterion.
    • 本发明涉及用于对码字进行解码的方法和解码器,该解码是作为在代码的图形表示上传递的消息来执行的。 在低密度奇偶校验(LDPC)码中,其中对于奇偶校验矩阵中的每个非零条目,使用从解调器获得的数据来初始化第一消息矩阵的消息矩阵元素,并且第二消息矩阵的元素 基于所述第一消息矩阵的消息矩阵元素确定。 此外,基于从解调器获取的数据和第二矩阵的矩阵元素重构解码码字。 此外,本发明涉及通信系统,移动终端和包括解码器的基站。 为了减少错误信息的影响,解码方法使用来自所述第一/第二矩阵的矩阵元素的子集来确定所述第二/第一矩阵的矩阵元素,其中所述子集的矩阵元素满足可靠性标准。