CODE CONSTRUCTION FOR IRREGULAR SHORTENED LDPC CODES WITH GOOD PERFORMANCE
    1.
    发明申请
    CODE CONSTRUCTION FOR IRREGULAR SHORTENED LDPC CODES WITH GOOD PERFORMANCE 审中-公开
    用于具有良好性能的不规则的低密度LDPC码的代码构造

    公开(公告)号:WO2005114418A3

    公开(公告)日:2006-05-18

    申请号:PCT/US2005016410

    申请日:2005-05-11

    Abstract: A method for interlacing columns of different weights is proposed for a parity-check matrix H (Figure 2) that results in good performing LDPC codes shortened or unshortened. Matrix H comprises a section H 1 and a section H 2 , and wherein H 1 has a plurality of different column weights and comprises a plurality of sub-matrices where columns of at least one weight are substantially interlaced between the sub-matrices.

    Abstract translation: 对于奇偶校验矩阵H(图2),提出了一种用于交错不同权重的列的方法,该矩阵H导致良好执行的LDPC码被缩短或不启动。 矩阵H包括H 1区和H 2区,并且其中H 1具有多个不同的列权重,并且包括多个 其中至少一个权重的列在子矩阵之间基本上交错的子矩阵。

    METHOD AND APPARATUS FOR ENCODING DATA
    2.
    发明申请
    METHOD AND APPARATUS FOR ENCODING DATA 审中-公开
    编码数据的方法和装置

    公开(公告)号:WO2004027616B1

    公开(公告)日:2004-05-06

    申请号:PCT/US0329073

    申请日:2003-09-16

    Applicant: MOTOROLA INC

    CPC classification number: H03M13/1182 H03M13/09

    Abstract: A deterministic structure for controlled distribution of weight-2 columns is proposed that reduces the occurrence of undetected frame errors and significantly enhances the code performance in comparison to a randomly-constructed parity-check matrix.

    Abstract translation: 提出了权重2列的受控分布的确定性结构,与随机构建的奇偶校验矩阵相比,减少了未检测到的帧错误的发生并显着增强了代码性能。

    METHOD AND APPARATUS FOR ENCODING DATA

    公开(公告)号:AU2003267242A1

    公开(公告)日:2004-04-08

    申请号:AU2003267242

    申请日:2003-09-16

    Applicant: MOTOROLA INC

    Abstract: The present invention encompasses a method for determining values for parity check bits (p1, . . . , pm) based on a current symbol set (s1, . . . , sk). The method comprises the steps of receiving the current symbol set (s1, . . . , sk) and using a transformation of a matrix to determine the parity check bits. The first N2 columns of the matrix is defined that for column i, 1

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