Apparatus and method for coding/decoding block low density parity check code in a mobile communication system
    3.
    发明授权
    Apparatus and method for coding/decoding block low density parity check code in a mobile communication system 有权
    在移动通信系统中对低密度奇偶校验码进行编码/解码的装置和方法

    公开(公告)号:US09319068B2

    公开(公告)日:2016-04-19

    申请号:US14256288

    申请日:2014-04-18

    IPC分类号: H03M13/00 H03M13/11

    摘要: A system and method for processing a block Low Density Parity Check (LDPC) code are provided. The system includes, a decoding apparatus for decoding a block LDPC code using a parity check matrix, the parity check matrix including an information part and a parity part, the parity part including a first section (B) including a plurality of first permutation matrices, a second section (D) including a second permutation matrix, a third section (T) including a plurality of identity matrices (I) arranged diagonally within the third section and a plurality of third permutation matrices arranged below the plurality of identity matrices, and a fourth section (E) including a fourth permutation matrix.

    摘要翻译: 提供了一种用于处理块低密度奇偶校验(LDPC)码的系统和方法。 该系统包括:使用奇偶校验矩阵解码块LDPC码的解码装置,奇偶校验矩阵包括信息部分和奇偶校验部分,奇偶校验部分包括包括多个第一置换矩阵的第一部分(B) 包括第二置换矩阵的第二部分(D),包括在第三部分内对角排列的多个单位矩阵(I)的第三部分(T)和布置在多个单位矩阵之下的多个第三置换矩阵,以及 第四部分(E)包括第四置换矩阵。

    LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices
    4.
    发明授权
    LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices 有权
    具有用CSI(循环移位身份)和空子矩阵选择性构造的相应奇偶校验矩阵的LDPC(低密度奇偶校验)码

    公开(公告)号:US08631312B2

    公开(公告)日:2014-01-14

    申请号:US13753579

    申请日:2013-01-30

    IPC分类号: H03M13/00

    摘要: LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices. An LDPC matrix corresponding to an LDPC code is employed within a communication device to encode and/or decode coded signals for use in any of a number of communication systems. The LDPC matrix is composed of a number of sub-matrices and may be partitioned into a left hand side matrix and a right hand side matrix. The right hand side matrix may include two sub-matrix diagonals therein that are composed entirely of CSI (Cyclic Shifted Identity) sub-matrices; one of these two sub-matrix diagonals is located on the center sub-matrix diagonal and the other is located just to the left thereof. All other sub-matrices of the right hand side matrix may be null sub-matrices (i.e., all elements therein are values of zero “0”).

    摘要翻译: 具有用CSI(循环移位身份)和空子矩阵选择性构造的相应奇偶校验矩阵的LDPC(低密度奇偶校验)码。 在通信设备内采用对应于LDPC码的LDPC矩阵来编码和/或解码用于多个通信系统中的任何一个的编码信号。 LDPC矩阵由多个子矩阵组成,并且可以被划分为左手侧矩阵和右手侧矩阵。 右手侧矩阵可以包括其中完全由CSI(循环移位身份)子矩阵组成的两个子矩阵对角线; 这两个子矩阵对角线之一位于中心子矩阵对角线上,另一个位于其左侧。 右侧方矩阵的所有其他子矩阵可以是空子矩阵(即,其中的所有元素为零“0”)。

    Apparatus and method for encoding low density parity check codes in a communication system
    5.
    发明授权
    Apparatus and method for encoding low density parity check codes in a communication system 有权
    用于在通信系统中编码低密度奇偶校验码的装置和方法

    公开(公告)号:US07930619B2

    公开(公告)日:2011-04-19

    申请号:US11789966

    申请日:2007-04-26

    IPC分类号: H03M13/03

    CPC分类号: H03M13/1151 H03M13/1111

    摘要: A Low Density Parity Check (LDPC) code encoding apparatus for a communication system is provided. The encoding apparatus receives information bits, and generates an LDPC code by encoding the information bits using an interleaving scheme. The interleaving scheme is generated such that when the LDPC code is punctured, there is no short-length cycle in a Tanner graph of the punctured LDPC code.

    摘要翻译: 提供了一种用于通信系统的低密度奇偶校验(LDPC)码编码装置。 编码装置接收信息比特,并且通过使用交织方案对信息比特进行编码来生成LDPC码。 生成交织方案,使得当LDPC码被打孔时,在打孔的LDPC码的Tanner图中不存在短长度的周期。

    RETRANSMISSION CONTROL METHOD AND COMMUNICATIONS DEVICE
    6.
    发明申请
    RETRANSMISSION CONTROL METHOD AND COMMUNICATIONS DEVICE 审中-公开
    重新设计控制方法和通信设备

    公开(公告)号:US20100005361A1

    公开(公告)日:2010-01-07

    申请号:US12559169

    申请日:2009-09-14

    申请人: Wataru Matsumoto

    发明人: Wataru Matsumoto

    摘要: A retransmission control method comprising: generating N parity check matrices; generating a generator matrix containing a check symbol generator matrix contained in the first parity check matrix; transmitting the codeword generated by using the generator matrix to another communications device; generating, when the communications device receives a NAK in response to the codeword, a first additional parity by using the second parity check matrix; and retransmitting the first additional parity to the another communications device.

    摘要翻译: 一种重传控制方法,包括:产生N个奇偶校验矩阵; 生成包含第一奇偶校验矩阵中包含的校验符号生成矩阵的生成矩阵; 将通过使用所述生成矩阵生成的码字发送到另一通信设备; 当所述通信设备响应于所述码字接收到NAK时,产生通过使用所述第二奇偶校验矩阵的第一附加奇偶校验; 并向另一个通信设备重发第一附加奇偶校验。

    Method and device for decoding low-density parity check code and optical information reproducing apparatus using the same
    7.
    发明申请
    Method and device for decoding low-density parity check code and optical information reproducing apparatus using the same 有权
    用于解码低密度奇偶校验码的方法和装置以及使用其的光信息再现装置

    公开(公告)号:US20070288825A1

    公开(公告)日:2007-12-13

    申请号:US11486449

    申请日:2006-07-13

    申请人: Bi-Woong Chung

    发明人: Bi-Woong Chung

    IPC分类号: H03M13/00

    摘要: A method of decoding a received signal encoded with an LDPC code is provided. The method comprises initializing bits with an initial value of the received signal, obtaining posterior values of the bits by iteratively decoding the bits in a row direction and a column direction, determining on the basis of the posterior values whether an iterative decoding operation should be performed and comparing the posterior values with predetermined values and updating the initial value of the bits, when it is determined that the iterative decoding operation is be performed.

    摘要翻译: 提供了一种用LDPC码编码的接收信号进行解码的方法。 该方法包括利用接收信号的初始值初始化比特,通过对行方向和列方向上的比特进行迭代解码来获得比特的后验值,根据后验值确定是否应执行迭代解码操作 并且当确定执行迭代解码操作时,将后验值与预定值进行比较并更新比特的初始值。

    APPARATUS AND METHOD FOR CODING/DECODING BLOCK LOW DENSITY PARITY CHECK CODE IN A MOBILE COMMUNICATION SYSTEM
    8.
    发明申请
    APPARATUS AND METHOD FOR CODING/DECODING BLOCK LOW DENSITY PARITY CHECK CODE IN A MOBILE COMMUNICATION SYSTEM 有权
    移动通信系统中编码/解码块低密度奇偶校验码的装置和方法

    公开(公告)号:US20070283221A1

    公开(公告)日:2007-12-06

    申请号:US11831688

    申请日:2007-07-31

    IPC分类号: H03M13/00

    摘要: A method for generating a parity check matrix of a block LDPC code. The parity check matrix includes an information part corresponding to an information word and a first parity part and a second parity part each corresponding to a parity. The method includes determining a size of the parity check matrix based on a coding rate applied when coding the information word with the block LDPC code, and a codeword length; dividing a parity check matrix with the determined size into a predetermined number of blocks; classifying the blocks into blocks corresponding to the information part, blocks corresponding to the first parity part, and blocks corresponding to the second parity part; arranging permutation matrixes in predetermined blocks from among the blocks classified as the first parity part, and arranging identity matrixes in a full lower triangular form in predetermined blocks from among the blocks classified as the second parity part; and arranging the permutation matrixes in the blocks classified as the information part such that a minimum cycle length is maximized and weight values are irregular on a factor graph of the block LDPC code.

    摘要翻译: 一种用于产生块LDPC码的奇偶校验矩阵的方法。 奇偶校验矩阵包括对应于信息字的信息部分和对应于奇偶校验的第一奇偶校验部分和第二奇偶校验部分。 该方法包括基于在使用块LDPC码对信息字进行编码时应用的编码率和码字长度来确定奇偶校验矩阵的大小; 将具有所确定的大小的奇偶校验矩阵除以预定数量的块; 将块分类为对应于信息部分的块,对应于第一奇偶校验部分的块,以及对应于第二奇偶校验部分的块; 从分类为第一奇偶校验部分的块中将预定块中的置换矩阵排列在预定块中的整个下三角形形式中的单位矩阵,从被分类为第二奇偶校验部分的块中排列; 以及将排列矩阵排列在分组为信息部分的块中,使得最小周期长度最大化,权重值在块LDPC码的因子图上是不规则的。