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1. 发明授权

US08458571B2 Data transmission method and equipment 有权
标题翻译：数据传输方式和设备
公开(公告)号：US08458571B2
公开(公告)日：2013-06-04
申请号：US12812091
申请日：2008-04-30
申请人： Jin Xu , Yuanli Fang , Zhifeng Yuan , Song Li , Jun Xu , Liujun Hu
发明人： Jin Xu , Yuanli Fang , Zhifeng Yuan , Song Li , Jun Xu , Liujun Hu
IPC分类号： H03M13/00
CPC分类号： H04L1/0057 , H04L1/0052 , H04L1/0083
摘要： The present invention discloses a data transmission method and apparatus. The method comprises: segmenting data to be transmitted into information file segments with a length of Tb bits; performing forward error correction (FEC) coding for Tb information bit sequences composed of bits in same positions in a plurality of continuous information file segments to generate Tb check bit sequences, putting each bit of the check bit sequences in the same position in the check file segments as the corresponding information bit sequences; and transmitting each of the information file segments and check file segments according to their order; the number of bits contained in the information bit sequences being less than or equal to the maximum length of Kmax bits of the FEC-coded information bit sequences.
摘要翻译：本发明公开了一种数据传输方法和装置。该方法包括：将要发送的数据分割成具有Tb比特长度的信息文件段; 对由多个连续信息文件段中的相同位置的位构成的Tb信息比特序列执行前向纠错（FEC）编码，以产生Tb校验比特序列，将校验比特序列的每个比特放在校验文件中的相同位置段作为相应的信息位序列; 并根据其顺序发送每个信息文件段和检查文件段; 包含在信息比特序列中的比特数小于或等于FEC编码的信息比特序列的最大比特的最大长度。

2. 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。

3. 发明申请

US20120020435A1 Constellation Mapping Method 有权
标题翻译：星座映射方法
公开(公告)号：US20120020435A1
公开(公告)日：2012-01-26
申请号：US13202929
申请日：2009-07-03
申请人： Jin Xu , Jun Xu , Zhifeng Yuan , Qianzi Xu , Xianwei Gong , Bo Sun , Huiying Fang
发明人： Jin Xu , Jun Xu , Zhifeng Yuan , Qianzi Xu , Xianwei Gong , Bo Sun , Huiying Fang
IPC分类号： H04L27/36
CPC分类号： H04L27/3405 , H04L1/0066 , H04L1/0071 , H04L1/1893
摘要： The present invention provides a constellation mapping method, and the method includes: flipping a plurality of bits in each modulation symbol unit to be mapped in part of or all of modulation symbol units to be mapped of a bit sequence to be mapped; and mapping each flipped modulation symbol unit to be mapped as a modulation symbol in a constellation. By means of the present invention, the phenomenon that consecutive bits have the same reliability can be effectively avoided by changing unevenness of reliability distribution of the consecutive bits, and at the same time, the link performance can be improved.
摘要翻译：本发明提供一种星座映射方法，该方法包括：在要映射的比特序列映射的调制符号单元的一部分或全部中，对每个调制符号单元中的多个比特进行翻转，并映射要映射成星座图中的调制符号的每个翻转的调制符号单元。通过本发明，可以通过改变连续位的可靠性分布的不均匀性来有效地避免连续位具有相同可靠性的现象，同时可提高链路性能。

4. 发明申请

US20100257427A1 Coding method, coding device, decoding method and decoding device for low density generator matrix code 有权
标题翻译：编码方法，编码装置，低密度发生器矩阵码的解码方法和解码装置
公开(公告)号：US20100257427A1
公开(公告)日：2010-10-07
申请号：US12746181
申请日：2008-02-21
申请人： Jin Xu , Jun Xu , Zhifeng Yuan , Yuanli Fang , Song Li , Liujun Hu
发明人： Jin Xu , Jun Xu , Zhifeng Yuan , Yuanli Fang , Song Li , Liujun Hu
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/116 , H03M13/118 , H03M13/6362 , H03M13/6516
摘要： The present invention discloses a coding method, a coding device, a decoding method and a decoding device for low density generator matrix codes. Wherein the coding method includes: constructing the mother code set of the low density generator matrix code using P low density generator matrix codes of different code lengths at a code rate R0, wherein the mother code set of the low density generator matrix code has a uniform basic matrix Gbuniform, R 0 = k b n b , where kb is the row number of the basic matrix and nb is the column number of the basic matrix; obtaining the length L of an intermediate variable according to the relationship between the length K of the information bit sequence to be coded in the mother code set of the low density generator matrix code and the length L of the intermediate variable; obtaining an expansion factor zk for processing the basic matrix using the length L of the intermediate variable and the row number kb of the basic matrix, and obtaining a generator matrix Gldgc, by modifying and expanding the basic matrix using the expansion factor zk; and coding the information bit sequence to be coded using a matrix Gldgc(1:L,1:N+L−K) comprised of L rows and the first N+L−K columns of the generator matrix.
摘要翻译：本发明公开了一种用于低密度发生器矩阵码的编码方法，编码装置，解码方法和解码装置。其编码方法包括：以码率R0，利用不同码长的P个低密度发生器矩阵码构造低密度发生器矩阵码的母码组，其中低密度发生器矩阵码的母码组具有均匀基本矩阵Gbuniform，R 0 = kbnb，其中kb是基本矩阵的行号，nb是基本矩阵的列数; 根据低密度发生器矩阵码的母码组中的要编码的信息比特序列的长度K与中间变量的长度L之间的关系，获得中间变量的长度L; 通过使用中间变量的长度L和基本矩阵的行数kb来获得用于处理基本矩阵的扩展因子zk，并且通过使用扩展因子zk修改和扩展基本矩阵来获得生成矩阵Gldgc; 并使用由L行构成的矩阵Gldgc（1：L，1：N + L-K）对发生器矩阵的第一N + L-K列进行编码的信息位序列进行编码。

5. 发明授权

US08527830B2 Encoding method, encoding device, decoding method and decoding device for low density generator matrix codes 有权
标题翻译：编码方法，编码装置，低密度发生器矩阵码的解码方法和解码装置
公开(公告)号：US08527830B2
公开(公告)日：2013-09-03
申请号：US12746756
申请日：2008-04-16
申请人： Jin Xu , Jun Xu , Zhifeng Yuan , Yuanli Fang , Song Li , Liujun Hu
发明人： Jin Xu , Jun Xu , Zhifeng Yuan , Yuanli Fang , Song Li , Liujun Hu
IPC分类号： H03M13/00
CPC分类号： H03M13/116 , H03M13/118 , H03M13/6362 , H03M13/6516
摘要： An encoding method, encoding device, decoding method and decoding device for low density generator matrix codes (LDGC) are disclosed. Wherein, the encoding method comprises: construct an LDGC mother code set using P LDGC with code rate R0 and different code lengths, wherein the LDGC mother code set has a uniform basic matrix Gbuniform wherein, R 0 = k b n b , kb denotes the number of rows and nb denotes the number of columns in the basic matrix; obtain length L of an intermediate variant according to length K of an information bit sequence to be encoded in the LDGC mother code set; modify and expand the basic matrix to obtain a generator matrix Gldgc using the length L of the intermediate variant and the number kb of rows in the basic matrix; and encode the information bit sequence to be encoded using a matrix Gldgc (1:L,1:N+L−K) composed of L rows and the front N+L−K columns of the generator matrix, wherein N denotes the length of the encoded information.
摘要翻译：公开了一种用于低密度发电机矩阵码（LDGC）的编码方法，编码装置，解码方法和解码装置。其编码方法包括：使用代码率R0和不同代码长度的P LDGC构建LDGC母码集，其中LDGC母码组具有均匀的基本矩阵，其中，R 0 = kbnb，kb表示行数而nb表示基本矩阵中的列数; 根据要编码在LDGC母码组中的信息比特序列的长度K获得中间变体的长度L; 修改和扩展基本矩阵，以使用中间变体的长度L和基本矩阵中的行的数量kb来获得生成矩阵Gldgc; 并使用由L行组成的矩阵Gldgc（1：L，1：N + L-K）对生成矩阵的前N + L-K列进行编码的信息比特序列进行编码，其中，N表示编码信息的长度。

6. 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。

7. 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。

8. 发明申请

US20100185915A1 METHOD AND DEVICE FOR ENCODING THE LOW DENSITY GENERATOR MATRIX CODE 有权
标题翻译：用于编码低密度发生器矩阵码的方法和装置
公开(公告)号：US20100185915A1
公开(公告)日：2010-07-22
申请号：US12666454
申请日：2008-06-02
申请人： Jun Xu , Jin Xu , Zhifeng Yuan , Yuanli Fang , Liujun Hu
发明人： Jun Xu , Jin Xu , Zhifeng Yuan , Yuanli Fang , Liujun Hu
IPC分类号： H03M13/07 , G06F11/10
CPC分类号： H03M13/3761 , H03M13/11
摘要： A method and system for encoding the low density generator matrix code are disclosed. The encoding method includes the following steps: S102, constructing a generator matrix Gldgc with L rows and N+L−K columns, wherein a phalanx Gldgc(1:L, 1:L) which consists of L rows and the first L columns of the generator matrix Gldgc is an upper triangular matrix or a lower triangular matrix, the K, L and N being positive integers, and K
摘要翻译：公开了一种用于编码低密度发生器矩阵码的方法和系统。该编码方法包括以下步骤：S102，构造具有L行和N + L-K列的生成矩阵Gldgc，其中由L行和第L列组成的指骨Gldgc（1：L，1：L）生成矩阵Gldgc是上三角矩阵或下三角矩阵，K，L和N是正整数，K

9. 发明授权

US08868988B2 Rate matching method and device 有权
标题翻译：速率匹配方法和设备
公开(公告)号：US08868988B2
公开(公告)日：2014-10-21
申请号：US13260045
申请日：2009-11-16
申请人： Zhili Sun , Jun Xu , Jin Xu , Zhifeng Yuan , Qianzi Xu , Xianwei Gong , Bo Sun , Huiying Fang
发明人： Zhili Sun , Jun Xu , Jin Xu , Zhifeng Yuan , Qianzi Xu , Xianwei Gong , Bo Sun , Huiying Fang
IPC分类号： G06F11/00
CPC分类号： H04L1/1819 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要： The present invention discloses a rate matching method and device. The method includes that: an information bit sequence is coded and interleaved to obtain a mother code codeword with a length NFB—Buffer; and bits are selected from the mother code codeword to generate a hybrid automatic repeat request (HARQ) subpacket for current transmission. By means of the present invention, the effect of covering the whole mother code area can be achieved as much as possible, and the performance of the HARQ multiple retransmission link can be enhanced.
摘要翻译：本发明公开了一种速率匹配方法和装置。该方法包括：对信息比特序列进行编码和交织以获得长度为NFB-Buffer的母码码字; 并且从母码码字中选择比特以产生用于当前传输的混合自动重传请求（HARQ）子分组。通过本发明，可以尽可能地实现覆盖整个母码区域的效果，并且可以提高HARQ多重传输链路的性能。

10. 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。

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