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81. 发明专利

JP2009177228A Encoding method, encoder, and decoder 有权
标题翻译：编码方法，编码器和解码器
公开(公告)号：JP2009177228A
公开(公告)日：2009-08-06
申请号：JP2008000844
申请日：2008-01-07
申请人： Panasonic Corp , パナソニック株式会社
发明人： MURAKAMI YUTAKA , OKAMURA SHUTA , ORIHASHI MASAYUKI , KISHIGAMI TAKAAKI
IPC分类号： H03M13/19 , H03M13/23
CPC分类号： H03M13/1154 , H03M13/6362
摘要： PROBLEM TO BE SOLVED: To obtain satisfactory reception quality, when creating an LDPC-CC from a convolution code and performing error correction encoding using the LDPC-CC to a signal series for transmission. SOLUTION: In an equation (1), namely the parity check polynomial of the convolution code when "1" is added to the approximation lower triangle matrix of a check matrix H (501, 502), α 1 , ..., α n and β 1 , ... β m are set to not less than 2K+1 to obtain a parity series P(D) by the equation (1). Equation (1): (D α1 +...+D αn +D K +...+1)X(D)+(D β1 +...+D βm +D K +...+1)P(D)=0. In this case, X(D) is a polynomial expression of an information series, P(D) is a polynomial formula of parity series, and K is a natural number. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了获得令人满意的接收质量，当从卷积码创建LDPC-CC并且使用LDPC-CC执行到纠错编码的信号序列进行传输时。＆lt; P＆gt;解决方案：在等式（1）中，即当将“1”加到校验矩阵H（501,502）的近似下三角矩阵时，即卷积码的奇偶校验多项式，α / SB>，...，α n 和β 1 ，...β m 设定为不小于2K + 1至通过等式（1）获得奇偶校验序列P（D）。等式（1）：（D α1 + ... + D αn + D K + ... + 1）X（D） +（D β1 + ... + D βm + D K + ... + 1）P（D）= 0。在这种情况下，X（D）是信息序列的多项式表达式，P（D）是奇偶校验序列的多项式公式，K是自然数。版权所有（C）2009，JPO＆INPIT

82. 发明专利

JP2007329883A Decoding method and decoding device for ldpc code, and optical information reproducing device using the same 有权
标题翻译：用于LDPC码的解码方法和解码装置，以及使用该代码的光信息再现装置
公开(公告)号：JP2007329883A
公开(公告)日：2007-12-20
申请号：JP2006196271
申请日：2006-07-18
申请人： Daewoo Electronics Corp , 株式会社大宇エレクトロニクスDaewoo Electronics Corporation
发明人： CHUNG BI-WOONG
IPC分类号： H03M13/19 , G06F11/10 , G11B7/0065 , G11B20/18
CPC分类号： H03M13/1162 , G11B20/10 , H03M13/1102 , H03M13/1105 , H03M13/1111 , H03M13/1151 , H03M13/1154 , H03M13/1177 , H03M13/3723
摘要： PROBLEM TO BE SOLVED: To provide a decoding method and a decoding device for low-density parity check codes (LDPC codes) for correcting errors due to misalignment, and to provide an optical information reproducing device that uses the same.
SOLUTION: A bit is initialized to the initial value of a received signal. Iterative decoding is conducted in a row direction and in a column direction to obtain the posteriori value of the bit, to decide according to the posteriori value whether the iterative decoding is to be advanced again. If the iterative decoding is to be advanced, the posteriori value is compared with a set value, and the initial value of the bit is updated.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：解决的问题：提供一种用于校正由于未对准引起的误差的低密度奇偶校验码（LDPC码）的解码方法和解码装置，并提供使用该解码方法和解码装置的光学信息再现装置。解决方案：将一个位初始化为接收信号的初始值。在行方向和列方向上进行迭代解码以获得比特的后验值，根据后验值来确定迭代解码是否要再次提前。如果迭代解码要提前，则将后验值与设定值进行比较，并更新位的初始值。版权所有（C）2008，JPO＆INPIT

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