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21. 发明申请

US20100275091A1 DECODING METHOD FOR LOW DENSITY GENERATOR MATRIX CODE 有权
标题翻译：低密度发电机矩阵码的解码方法
公开(公告)号：US20100275091A1
公开(公告)日：2010-10-28
申请号：US12747936
申请日：2008-04-30
申请人： Zhifeng Yuan , Jun Xu , Jin Xu
发明人： Zhifeng Yuan , Jun Xu , Jin Xu
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/1111 , H03M13/1102 , H03M13/373 , H04L1/0057
摘要： The present invention provides a method for decoding a low density generator matrix code (LDGC), applied for decoding transmitted original information bits encoded in LDGC code. The method comprises the following steps: A: deleting a part erased by a channel in a received code word sequence R filled by a known bit sequence to obtain an erased code word sequence Re, and deleting the rows corresponding to the erased part from a transposed matrix GIdgct of a generator matrix of the LDGC to obtain the erased generator matrix Ge; B: permuting columns of Ge such that an M-order square matrix with an element in the 0th row and 0th column being a vertex is a triangular matrix to obtain the permuted generator matrix Gf; and C: calculating the original information bits using Gf and Re.
摘要翻译：本发明提供一种解码低密度发生器矩阵码（LDGC）的方法，该方法应用于解码以LDGC码编码的发送的原始信息比特。该方法包括以下步骤：A：删除由已知比特序列填充的接收码字序列R中的信道擦除的部分，以获得被擦除的码字序列Re，并从转置的序列中删除对应于被擦除部分的行 LDGC的发生器矩阵的矩阵GIdgct以获得被擦除的发生器矩阵Ge; B：排列Ge的列，使得具有第0行和第0列中的元素作为顶点的M阶方阵是三角矩阵，以获得置换的发生矩阵Gf; 和C：使用Gf和Re计算原始信息位。

22. 发明授权

US08438448B2 Decoding method and device for low density generator matrix codes 有权
标题翻译：低密度发生器矩阵码的解码方法和装置
公开(公告)号：US08438448B2
公开(公告)日：2013-05-07
申请号：US12991628
申请日：2008-10-14
申请人： Zhifeng Yuan , Jun Xu
发明人： Zhifeng Yuan , Jun Xu
IPC分类号： H03M13/00
CPC分类号： H03M13/1191 , H03M13/3761 , H03M13/616 , H04L1/0057
摘要： A decoding method for low density generator matrix codes is disclosed, which decodes a bit information sequence that is transmitted after encoding with LDGC, the method comprises: S1: filling L−K known bits in a received code word sequence R and deleting code word symbols erased by a channel in R, and getting Re; S2: deleting rows corresponding to the code word symbols erased by a channel from a transposed matrix Gldgct of an LDGC generator matrix, and getting Ge; S3: obtaining It according to relation Ge×It=Re; S4: obtaining st according to relation Gldgct(0:L−1,0:L−1)×It=st, and getting an original information sequence of K bits by deleting the filled L−K known bits from st. The present disclosure can significantly reduce the storage overhead of a decoder, accelerate the decoding speed, and allow LDGC to be more smartly used in high speed communication systems.
摘要翻译：公开了一种用于低密度发生器矩阵码的解码方法，其对用LDGC进行编码之后发送的比特信息序列进行解码，该方法包括：S1：在接收到的码字序列R中填充LK已知比特，并删除被删除的码字符号 R中的一个通道，并获得Re; S2：删除与LDGC生成矩阵的转置矩阵Gldgct中的通道擦除的码字符号相对应的行，得到Ge; S3：根据关系获得它们Ge×It = Re; S4：根据关系Gldgct（0：L-1,0：L-1）×It = st获取st，并通过从st删除填充的L-K已知比特得到K比特的原始信息序列。本公开可以显着减少解码器的存储开销，加速解码速度，并且允许LDGC在高速通信系统中更加智能地使用。

23. 发明授权

US08516334B2 Channel coding, modulating and mapping method for hybrid automatic repeat request of low density parity check code 有权
标题翻译：用于低密度奇偶校验码的混合自动重复请求的信道编码，调制和映射方法
公开(公告)号：US08516334B2
公开(公告)日：2013-08-20
申请号：US12663050
申请日：2008-02-28
申请人： Jun Xu , Zhifeng Yuan , Liujun Hu
发明人： Jun Xu , Zhifeng Yuan , Liujun Hu
IPC分类号： H03M13/00
CPC分类号： H04L1/007 , H03M13/116 , H03M13/1185 , H03M13/255 , H03M13/356 , H03M13/618 , H03M13/6306 , H03M13/6393 , H04L1/0057 , H04L1/0071 , H04L1/1812
摘要： The present invention discloses a method for channel coding and modulation mapping in HARQ of the LDPC code, comprising: performing structured LDPC encoding of an information bit sequence with a length of K input by a channel encoder, and sending a generated codeword to a HARQ buffer; rearranging codeword bits of a LDPC HARQ mother code in the HARQ buffer, and sequentially selecting codeword bits to generate a binary sequence of a HARQ packet; mapping codeword bits of the HARQ packet to a constellation, and high-significant bits in encoding blocks of the HARQ packet being mapped to high reliability bits in the constellation. The present invention provides the LDPC codeword with the maximal constellation gain, so that the LDPC HARQ channel encoding has the optimal performance.
摘要翻译：本发明公开了一种用于LDPC码的HARQ中的信道编码和调制映射的方法，包括：对由信道编码器输入的长度为K的信息比特序列执行结构化LDPC编码，并将生成的码字发送到HARQ缓冲器 ; 在HARQ缓冲器中重新排列LDPC HARQ母码的码字比特，并且顺序地选择码字比特以生成HARQ分组的二进制序列; 将HARQ分组的码字比特映射到星座，并且HARQ分组的编码块中的高有效比特被映射到星座中的高可靠性比特。本发明提供具有最大星座增益的LDPC码字，使得LDPC HARQ信道编码具有最佳性能。

24. 发明申请

US20110239075A1 CHANNEL CODING, MODULATING AND MAPPING METHOD FOR HYBRID AUTOMATIC REPEAT REQUEST OF LOW DENSITY PARITY CHECK CODE 有权
标题翻译：用于混合自动重复请求低密度奇偶校验码的信道编码，调制和映射方法
公开(公告)号：US20110239075A1
公开(公告)日：2011-09-29
申请号：US12663050
申请日：2008-02-28
申请人： Jun Xu , Zhifeng Yuan , Liujun Hu
发明人： Jun Xu , Zhifeng Yuan , Liujun Hu
IPC分类号： H04L1/18 , G06F11/14
CPC分类号： H04L1/007 , H03M13/116 , H03M13/1185 , H03M13/255 , H03M13/356 , H03M13/618 , H03M13/6306 , H03M13/6393 , H04L1/0057 , H04L1/0071 , H04L1/1812
摘要： The present invention discloses a method for channel coding and modulation mapping in HARQ of the LDPC code, comprising: performing structural LDPC encoding of an information bit sequence with a length of K input by a channel encoder, and sending a generated codeword to a HARQ buffer; rearranging codeword bits of a LDPC HARQ mother code in the HARQ buffer, and sequentially selecting codeword bits to generate a binary sequence of a HARQ packet; mapping codeword bits of the HARQ packet to a constellation, and high-order bits in encoding blocks of the HARQ packet being mapped to high reliability bits in the constellation. The present invention provides the LDPC codeword with the maximal constellation gain, so that the LDPC HARQ channel encoding has the optimal performance.
摘要翻译：本发明公开了一种用于LDPC码的HARQ中的信道编码和调制映射的方法，包括：对信道编码器输入的长度为K的信息比特序列执行结构LDPC编码，并将生成的码字发送到HARQ缓冲器 ; 在HARQ缓冲器中重新排列LDPC HARQ母码的码字比特，并且顺序地选择码字比特以生成HARQ分组的二进制序列; 将HARQ分组的码字比特映射到星座，并且HARQ分组的编码块中的高位被映射到星座中的高可靠性比特。本发明提供具有最大星座增益的LDPC码字，使得LDPC HARQ信道编码具有最佳性能。

25. 发明申请

US20110060960A1 Decoding method and device for low density generator matrix codes 有权
标题翻译：低密度发生器矩阵码的解码方法和装置
公开(公告)号：US20110060960A1
公开(公告)日：2011-03-10
申请号：US12991628
申请日：2008-10-14
申请人： Zhifeng Yuan , Jun Xu
发明人： Zhifeng Yuan , Jun Xu
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/1191 , H03M13/3761 , H03M13/616 , H04L1/0057
摘要： A decoding method for low density generator matrix codes is disclosed, which decodes a bit information sequence that is transmitted after encoding with LDGC, the method comprises: S1: filling L−K known bits in a received code word sequence R and deleting code word symbols erased by a channel in R, and getting Re; S2: deleting rows corresponding to the code word symbols erased by a channel from a transposed matrix Gldgct of an LDGC generator matrix, and getting Ge; S3: obtaining It according to relation Ge×It=Re; S4: obtaining st according to relation Gldgct(0:L−1,0:L−1)×It=st, and getting an original information sequence of K bits by deleting the filled L−K known bits from st. The present disclosure can significantly reduce the storage overhead of a decoder, accelerate the decoding speed, and allow LDGC to be more smartly used in high speed communication systems.
摘要翻译：公开了一种用于低密度发生器矩阵码的解码方法，其对用LDGC进行编码之后发送的比特信息序列进行解码，该方法包括：S1：在接收的码字序列R中填充L-K个已知比特，并删除码字符号被R中的一个通道擦除，并得到Re; S2：删除与LDGC生成矩阵的转置矩阵Gldgct中的通道擦除的码字符号相对应的行，得到Ge; S3：根据关系获得它们Ge×It = Re; S4：根据关系Gldgct（0：L-1,0：L-1）×It = st获取st，并通过从st删除填充的L-K已知比特得到K比特的原始信息序列。本公开可以显着减少解码器的存储开销，加速解码速度，并且允许LDGC在高速通信系统中更加智能地使用。

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