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1. 发明授权

EP2639962B1 Joint message-passing decoding of a differential code and a channel code 有权
标题翻译：传递解码的差分和信道码的公共消息
公开(公告)号：EP2639962B1
公开(公告)日：2015-01-07
申请号：EP12305308.4
申请日：2012-03-15
申请人： ALCATEL LUCENT
发明人： Schmalen, Laurent , Leven, Andreas , Ten Brink, Stephan
IPC分类号： H03M13/11
CPC分类号： H03M13/112 , H03M13/114 , H03M13/1171 , H03M13/1185 , H03M13/1197 , H03M13/6325

2. 发明授权

EP1884023B1 NORMALIZED BELIEF PROPAGATION DECODING 有权
标题翻译：归一化的“置信传播”解码
公开(公告)号：EP1884023B1
公开(公告)日：2009-11-18
申请号：EP06746041.0
申请日：2006-04-27
申请人： Mitsubishi Electric Corporation
发明人： ZHANG, Juntan , GU, Daqing , ZHANG, Jinyun
IPC分类号： H03M13/11
CPC分类号： H03M13/658 , H03M13/1117 , H03M13/112 , H03M13/1194 , H03M13/1197 , H03M13/6583

3. 发明公开

EP1673870A1 METHOD FOR ENCODING LOW-DENSITY PARITY CHECK CODE 有权
标题翻译：方法编码LDPC码
公开(公告)号：EP1673870A1
公开(公告)日：2006-06-28
申请号：EP04793492.2
申请日：2004-10-14
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： YU, Nam-Yul, 812-804 Byeokjeokgol 8-danji APT. , KIM, M., 102-902 Yaehyunmaeul Hyundaihometown
IPC分类号： H03M13/11
CPC分类号： H03M13/1197 , H03M13/1114 , H03M13/1137 , H03M13/1162 , H03M13/118 , H03M13/1185 , H03M13/611
摘要： An apparatus and method for encoding low-density parity check (LDPC) codes. The method for generating a low-density parity check code formed of an information-part matrix and a parity-part matrix comprises the steps of converting the information-part matrix into an array code structure and assigning a degree sequence to each submatrix column; extending a dual-diagonal matrix corresponding to the party-part matrix such that an offset value between diagonals has a random value; lifting the normalized dual-diagonal matrix; determining an offset value for cyclic column shift for each submatrix of the lifted normalized dual-diagonal matrix; and determining a parity symbol corresponding to a column of the parity-part matrix.

4. 发明公开

EP2926460A2 SYSTEMS AND METHODS FOR ENCODING AND DECODING OF CHECK-IRREGULAR NON-SYSTEMATIC IRA CODES 审中-公开
标题翻译：系统和方法用于编码和解码PRÜFUNGSIRREGULÄREN不系统IRA码
公开(公告)号：EP2926460A2
公开(公告)日：2015-10-07
申请号：EP13860179.4
申请日：2013-12-03
申请人： Digital Powerradio LLC
发明人： VOJCIC, Branimir, R. , PAPAHARALABOS, Stylianos
IPC分类号： H03M13/00
CPC分类号： H03M13/1197 , H03M13/09 , H03M13/098 , H03M13/1111 , H03M13/152 , H03M13/255 , H03M13/2906 , H03M13/296 , H03M13/356 , H03M13/3746 , H03M13/3761 , H03M13/611 , H03M13/6362 , H04L1/0041
摘要： Systems and methods for encoding and decoding check-irregular non-systematic IRA codes of messages in any communication or electronic system where capacity achieving coding is desired. According to these systems and methods, improved IRA coding strategies, including ones that employ capacity-approaching non-systematic IRA codes that are irregular and that exhibit a low error floor, are employed. These non-systematic IRA codes are particularly advantageous in scenarios in which up to half of coded bits could be lost due to channel impairments and/or where complementary coded bits are desired to transmit over two or more communications sub-channels. An encoder includes information bit repeaters and encoders, one or more interleavers, check node combiners, a check node by-pass and an accumulator. A decoder includes a demapper, one or more check node processors, an accumulator decoder, a bit decoder, and one or more interleavers/deinterleavers.

5. 发明公开

EP2639962A1 Joint message-passing decoding of a differential code and a channel code 有权
标题翻译： Gemeinsame Message-Passing Decodierung eines Differenzial- und eines Kanalcodes
公开(公告)号：EP2639962A1
公开(公告)日：2013-09-18
申请号：EP12305308.4
申请日：2012-03-15
申请人： Alcatel Lucent
发明人： Schmalen, Laurent , Leven, Andreas , Ten Brink, Stephan
IPC分类号： H03M13/11
CPC分类号： H03M13/112 , H03M13/114 , H03M13/1171 , H03M13/1185 , H03M13/1197 , H03M13/6325
摘要： Embodiments provide an apparatus, a method and a computer program for decoding a received codeword derived from an optical signal. The received codeword is based on a transmit codeword, which is encoded by the forward error correction encoding rule of a LDPC code or an IRA code and by a differential encoding rule. The apparatus (10) is operable to decode the received codeword based on a joint decoding scheme, the joint decoding scheme being based on a combination of a differential decoding rule associated to the differential encoding rule and a forward error correction decoding rule associated to the forward error correction encoding rule by passing messages between check nodes and variable nodes on a single Tanner graph representing both rules.
摘要翻译：实施例提供了用于对从光信号导出的接收码字进行解码的装置，方法和计算机程序。所接收的码字基于由LDPC码或IRA码的前向纠错编码规则和差分编码规则编码的发送码字。该装置（10）可操作以基于联合解码方案对接收的码字进行解码，联合解码方案基于与差分编码规则相关联的差分解码规则和与前向相关联的前向纠错解码规则的组合通过在表示两个规则的单个Tanner图上通过在检查节点和变量节点之间传递消息来进行纠错编码规则。

6. 发明公开

EP1801982A3 Encoder, decoder, methods of encoding and decoding 审中-公开
标题翻译：编码器，解码器，编码和解码方法
公开(公告)号：EP1801982A3
公开(公告)日：2009-08-12
申请号：EP07106217.8
申请日：2006-03-28
申请人： Fujitsu Ltd.
发明人： Kanaoka, Toshikazu, c/o Fujitsu Ltd. , Morita, Toshihiko, c/o Fujitsu Ltd.
IPC分类号： H03M13/11
CPC分类号： H03M13/6343 , H03M13/033 , H03M13/095 , H03M13/11 , H03M13/1162 , H03M13/118 , H03M13/1185 , H03M13/1188 , H03M13/1197 , H03M13/152
摘要： An information sequence having a code length of N (N=K+M), where K is information length and M is parity length, is encoded into a code sequence by using an LDPC code. The LDPC code is generated based on a matrix H, with M rows and N columns. The matrix H includes a check matrix H 2 and a check matrix H 1 . The check matrix H 2 has M rows and M columns, it is a cyclic permutation matrix, and an inverse matrix exists for the check matrix H 2 , and its column weight is 3. The check matrix H 1 has M rows and K columns.

7. 发明公开

EP1841073A1 Fast convergence LDPC decoding using BCJR algorithm at the check nodes 审中-公开
标题翻译： Schnell konvergierende Decodierung von LDPC Codes mit Anwendung des BCJR Algorithmus bei denPrüfknoten
公开(公告)号：EP1841073A1
公开(公告)日：2007-10-03
申请号：EP06006521.6
申请日：2006-03-29
申请人： STMicroelectronics N.V.
发明人： Kienle, Franck , Wehn, Norbert , Brack, Torben
IPC分类号： H03M13/11
CPC分类号： H03M13/3905 , H03M13/1165 , H03M13/1197 , H03M13/3972
摘要： Method of decoding LDPC codes such as IRA codes used in the DVB-S2 standard, the code graph comprising first variable nodes (systematic), second variable nodes (parity) having a degree two, and check nodes connected to second variable nodes by a zigzag connectivity, the method comprising
a) grouping the check nodes into at least one group, the check nodes of each group being connected by variable nodes called internal variable nodes,
b) performing for each group (GR i ) the following sub-steps b1) and b2):
b1) jointly updating (71) all the check nodes of said group by using an algorithm of the Maximum-A-Posteriori (MAP) type on a two-state trellis,
b2) updating (72,73) all the first variable nodes and all the second variable nodes (PN i-1,i ; PN i,i+1 ) connected to said group except said at least one internal second variable node,
c) iteratively repeating step b)
When using a plurality of groups, a corresponding plurality of trellis windows are LogMAP decoded without training period since connecting parity nodes are updated according the sum-product algorithm.
摘要翻译：对DVB-S2标准中使用的诸如IRA代码的LDPC码进行解码的方法，包括具有度2的第一可变节点（系统），第二可变节点（奇偶校验）的代码图，以及通过Z字形连接到第二可变节点的校验节点所述方法包括：a）将所述校验节点分组为至少一个组，每组的校验节点由称为内部变量节点的变量节点连接，b）对于每个组（GR i）执行以下子步骤b1）和b2）：b1）通过使用两状态网格上的最大后验（MAP）类型的算法来共同更新（71）所述组的所有校验节点，b2）更新（72,73）所有连接到除所述至少一个内部第二可变节点之外的所述组的第一可变节点和所有第二可变节点（PN i-1，i; PN i，i + 1），c）迭代地重复步骤b）当使用多个组，相应的多个网格窗口是LogMAP解码而没有训练周期根据sum-product算法更新连接奇偶校验节点。

8. 发明公开

EP1801982A9 Encoder, decoder, methods of encoding and decoding 审中-公开
标题翻译：编码器，解码器，编码和解码方法
公开(公告)号：EP1801982A9
公开(公告)日：2010-07-28
申请号：EP07106217.8
申请日：2006-03-28
申请人： Fujitsu Ltd.
发明人： Kanaoka, Toshikazu, c/o Fujitsu Ltd. , Morita, Toshihiko, c/o Fujitsu Ltd.
IPC分类号： H03M13/11
CPC分类号： H03M13/6343 , H03M13/033 , H03M13/095 , H03M13/11 , H03M13/1162 , H03M13/118 , H03M13/1185 , H03M13/1188 , H03M13/1197 , H03M13/152
摘要： An information sequence having a code length of N (N=K+M), where K is information length and M is parity length, is encoded into a code sequence by using an LDPC code. The LDPC code is generated based on a matrix H, with M rows and N columns. The matrix H includes a check matrix H 2 and a check matrix H 1 . The check matrix H 2 has M rows and M columns, it is a cyclic permutation matrix, and an inverse matrix exists for the check matrix H 2 , and its column weight is 3. The check matrix H 1 has M rows and K columns.

9. 发明公开

EP1982420A2 MESSAGE REMAPPING AND ENCODING 审中-公开
标题翻译： NEWS重新映射和加密
公开(公告)号：EP1982420A2
公开(公告)日：2008-10-22
申请号：EP07763265.1
申请日：2007-02-05
申请人： QUALCOMM Incorporated
发明人： LUO, Tao , CHAPONNIERE, Etienne Francois , FREUDIGER, Julien
IPC分类号： H03M13/13
CPC分类号： H03M13/356 , H03M13/1102 , H03M13/1197 , H03M13/136 , H03M13/155 , H03M13/23 , H03M13/2957
摘要： Techniques for remapping messages prior to encoding to improve performance are described. L designated messages among K total messages are remapped to L remapped messages, which are associated with L codewords having larger relative distance between these codewords, where L may be much less than K. The L designated messages may be more frequently used messages and/or more important messages. The remapping allows the L codewords with larger relative distance to be sent for the L designated messages, which may improve performance. A transmitter remaps an input message to a remapped message, encodes the remapped message to obtain a codeword, and sends the codeword to convey the input message. A receiver decodes a received codeword to obtain a decoded message and demaps the decoded message to obtain a demapped message, which is an estimate of the input message sent by the transmitter.

10. 发明公开

EP1900105A1 CLASH-FREE IRREGULAR-REPEAT-ACCUMULATE CODE 审中-公开
标题翻译： KOLLISIONSFREIER不规则的重复积累-CODE
公开(公告)号：EP1900105A1
公开(公告)日：2008-03-19
申请号：EP06750253.4
申请日：2006-04-14
申请人： TRELLISWARE TECHNOLOGIES, INC.
发明人： GRAY, Paul, Kingsley , CHUGG, Keith, Michael
IPC分类号： H03M13/11
CPC分类号： H03M13/03 , H03M13/033 , H03M13/11 , H03M13/1137 , H03M13/1174 , H03M13/118 , H03M13/1185 , H03M13/1197 , H03M13/275 , H03M13/29 , H03M13/6362 , H03M13/6508 , H03M13/6566
摘要： Methods, apparatuses, and systems are presented for performing data encoding involving receiving a sequence of data bits, encoding the sequence of data bits in accordance with a parity check matrix (H-matrix) to generate a sequence of encoded bits, wherein the H-matrix is capable of being partitioned into a first matrix and a second matrix, the first matrix being a dual-diagonal matrix, the second matrix comprising one or more vertically stacked sub-matrices, each sub-matrix consisting of a plurality of columns, each column having a column weight of no more than 1, wherein the second matrix is capable of being expressed as a product of a parity check matrix, an interleaver permutation matrix, and a repeat block matrix, and the interleaver permutation matrix satisfies a clash-free interleaver constraint, and outputting the sequence of encoded bits.

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