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1. 发明授权

US07499503B2 Parallel concatenated code with soft-in soft-out interactive turbo decoder 有权
公开(公告)号：US07499503B2
公开(公告)日：2009-03-03
申请号：US11728519
申请日：2007-03-26
申请人： Kelly Brian Cameron , Ba-Zhong Shen , Hau Thien Tran , Christopher R. Jones , Thomas A. Hughes, Jr.
发明人： Kelly Brian Cameron , Ba-Zhong Shen , Hau Thien Tran , Christopher R. Jones , Thomas A. Hughes, Jr.
IPC分类号： H04L27/36
CPC分类号： H03M13/3972 , H03M13/151 , H03M13/1515 , H03M13/25 , H03M13/258 , H03M13/27 , H03M13/2757 , H03M13/29 , H03M13/2966 , H03M13/2978 , H03M13/3905 , H03M13/3922 , H03M13/3927 , H03M13/3988 , H03M13/4107 , H03M13/6505 , H03M13/6561 , H04L1/0041 , H04L1/005 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要： A method for parallel concatenated (Turbo) encoding and decoding. Turbo encoders receive a sequence of input data tuples and encode them. The input sequence may correspond to a sequence of an original data source, or to an already coded data sequence such as provided by a Reed-Solomon encoder. A turbo encoder generally comprises two or more encoders separated by one or more interleavers. The input data tuples may be interleaved using a modulo scheme in which the interleaving is according to some method (such as block or random interleaving) with the added stipulation that the input tuples may be interleaved only to interleaved positions having the same modulo-N (where N is an integer) as they have in the input data sequence. If all the input tuples are encoded by all encoders then output tuples can be chosen sequentially from the encoders and no tuples will be missed. If the input tuples comprise multiple bits, the bits may be interleaved independently to interleaved positions having the same modulo-N and the same bit position. This may improve the robustness of the code. A first encoder may have no interleaver or all encoders may have interleavers, whether the input tuple bits are interleaved independently or not. Modulo type interleaving also allows decoding in parallel.

2. 发明授权

US07409006B2 Parallel concatenated code with soft-in-soft-out interactive turbo decoder 失效
标题翻译：软和软交互式turbo解码器的并行级联代码
公开(公告)号：US07409006B2
公开(公告)日：2008-08-05
申请号：US11481365
申请日：2006-07-05
申请人： Kelly Brian Cameron , Ba-Zhong Shen , Hau Thien Tran , Christopher R. Jones , Thomas A. Hughes, Jr.
发明人： Kelly Brian Cameron , Ba-Zhong Shen , Hau Thien Tran , Christopher R. Jones , Thomas A. Hughes, Jr.
IPC分类号： H04L27/00
CPC分类号： H03M13/3972 , H03M13/151 , H03M13/1515 , H03M13/25 , H03M13/258 , H03M13/27 , H03M13/2757 , H03M13/29 , H03M13/2966 , H03M13/2978 , H03M13/3905 , H03M13/3922 , H03M13/3927 , H03M13/3988 , H03M13/4107 , H03M13/6505 , H03M13/6561 , H04L1/0041 , H04L1/005 , H04L1/006 , H04L1/0065 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要： A method for parallel concatenated (Turbo) encoding and decoding. Turbo encoders receive a sequence of input data tuples and encode them. The input sequence may correspond to a sequence of an original data source, or to an already coded data sequence such as provided by a Reed-Solomon encoder. A turbo encoder generally comprises two or more encoders separated by one or more interleavers. The input data tuples may be interleaved using a modulo scheme in which the interleaving is according to some method (such as block or random interleaving) with the added stipulation that the input tuples may be interleaved only to interleaved positions having the same modulo-N (where N is an integer) as they have in the input data sequence. If all the input tuples are encoded by all encoders then output tuples can be chosen sequentially from the encoders and no tuples will be missed. If the input tuples comprise multiple bits, the bits may be interleaved independently to interleaved positions having the same modulo-N and the same bit position. This may improve the robustness of the code. A first encoder may have no interleaver or all encoders may have interleavers, whether the input tuple bits are interleaved independently or not. Modulo type interleaving also allows decoding in parallel.
摘要翻译：一种并行级联（Turbo）编码和解码的方法。 Turbo编码器接收一系列输入数据元组并进行编码。输入序列可以对应于原始数据源的序列，或者对应于已由Reed-Solomon编码器提供的已经编码的数据序列。 turbo编码器通常包括由一个或多个交织器分离的两个或更多个编码器。输入数据元组可以使用其中交织根据某些方法（例如块或随机交织）的加法规则进行交织，其中输入元组可以只交织到具有相同模N的交织位置其中N是整数），因为它们在输入数据序列中具有。如果所有的输入元组都是由所有的编码器编码的，那么输出元组可以从编码器顺序选择，也不会丢失元组。如果输入元组包含多个比特，那么这些比特可以与具有相同模N和相同比特位置的交织位置独立交织。这可以提高代码的鲁棒性。第一编码器可以不具有交织器，或者所有编码器可以具有交织器，无论输入元组位是否独立交错。模式类型交织也允许并行解码。

3. 发明授权

US07360146B1 Inverse function of min*:min*- (inverse function of max*:max*-) 有权
标题翻译： min *的反函数：min * - （最大*的反函数：max * - ）
公开(公告)号：US07360146B1
公开(公告)日：2008-04-15
申请号：US10347732
申请日：2003-01-21
申请人： Ba-Zhong Shen , Kelly Brian Cameron , Thomas A. Hughes, Jr. , Hau Thien Tran
发明人： Ba-Zhong Shen , Kelly Brian Cameron , Thomas A. Hughes, Jr. , Hau Thien Tran
IPC分类号： H03M13/03
CPC分类号： H03M13/3905 , H03M13/3922 , H03M13/395
摘要： Inverse function of min*:min*− (inverse function of max*:max*−). Two new parameters are employed to provide for much improved decoding processing for codes that involve the determination of a log corrected minimal and/or a log corrected maximal value from among a number of possible values. Examples of some of the codes that may benefit from the improved decoding processing provided by the inverse function of min*:min*− (and/or inverse function of max*:max*−) include turbo coding, parallel concatenated trellis coded modulated (PC-TCM) code, turbo trellis coded modulated (TTCM) code, and low density parity check (LDPC) code among other types of codes. The total number of processing steps employed within the decoding of a signal is significantly reduced be employing the inverse function of min*:min*− (and/or inverse function of max*:max*−) processing.
摘要翻译： min *的反函数：min * - （max *：max * - 的反函数）。采用两个新参数来提供对于涉及从多个可能值中确定对数校正的最小值和/或对数校正最大值的代码进行大量改进的解码处理。可以从由min *：min * - （和/或max *：max * - 的逆函数）提供的改进的解码处理中受益的一些代码的示例包括turbo编码，并行级联网格编码调制（ PC-TCM）码，turbo网格编码调制（TTCM）码和低密度奇偶校验（LDPC）码。采用min *：min * - （和/或max *：max * - ）的逆函数处理的逆函数，信号解码中采用的处理步骤的总数显着减少。

4. 发明授权

US08898547B2 Rate control adaptable communications 有权
标题翻译：速率控制适应通信
公开(公告)号：US08898547B2
公开(公告)日：2014-11-25
申请号：US12463386
申请日：2009-05-09
申请人： Kelly Brian Cameron , Ba-Zhong Shen , Hau Thien Tran
发明人： Kelly Brian Cameron , Ba-Zhong Shen , Hau Thien Tran
IPC分类号： H03M13/00 , H03M13/39 , H03M13/29 , H03M13/25
CPC分类号： H03M13/3905 , H03M13/256 , H03M13/258 , H03M13/2957 , H03M13/3988 , H03M13/6362 , H03M13/6516
摘要： Rate control adaptable communications. A common trellis is employed at both ends of a communication system (in an encoder and decoder) to code and decode data at different rates. The encoding employs a single encoder whose output bits may be selectively punctured to support multiple modulations (constellations and mappings) according to a rate control sequence. A single decoder is operable to decode each of the various rates at which the data is encoded by the encoder. The rate control sequence may include a number of rate controls arranged in a period that is repeated during encoding and decoding. Either one or both of the encoder and decoder may adaptively select a new rate control sequence based on a variety of operational parameters including operating conditions of the communication system, a change in signal to noise ratio (SNR), etc.
摘要翻译：速率控制适应通信。在通信系统（编码器和解码器）的两端采用通用网格，以不同速率对数据进行编码和解码。编码采用单个编码器，其输出位可以被选择性地打孔以支持根据速率控制序列的多个调制（星座和映射）。单个解码器可操作以解码编码器对数据进行编码的各种速率中的每一个。速率控制序列可以包括在编码和解码期间重复的周期中布置的速率控制的数量。编码器和解码器中的一个或两者可以基于包括通信系统的操作条件，信噪比（SNR）等的变化的各种操作参数自适应地选择新的速率控制序列。

5. 发明授权

US08370731B2 LDPC (low density parity check) codes with corresponding parity check matrices selectively constructed with CSI (cyclic shifted identity) and null sub-matrices 有权
标题翻译：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
公开(公告)号：US08370731B2
公开(公告)日：2013-02-05
申请号：US13423381
申请日：2012-03-19
申请人： Ba-Zhong Shen , Hau Thien Tran , Tak K. Lee , Kelly Brian Cameron
发明人： Ba-Zhong Shen , Hau Thien Tran , Tak K. Lee , Kelly Brian Cameron
IPC分类号： G06F11/10
CPC分类号： H03M13/1174 , H03M13/1151 , H03M13/1185 , H03M13/1188 , H03M13/1515 , H04L1/0068
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，其中的所有元素是0的值）。

6. 发明授权

US08250432B2 Variable modulation with LDPC (low density parity check) coding 有权
标题翻译：具有LDPC（低密度奇偶校验）编码的可变调制
公开(公告)号：US08250432B2
公开(公告)日：2012-08-21
申请号：US13116403
申请日：2011-05-26
申请人： Ba-Zhong Shen , Hau Thien Tran , Kelly Brian Cameron
发明人： Ba-Zhong Shen , Hau Thien Tran , Kelly Brian Cameron
IPC分类号： H03M13/00
CPC分类号： H03M13/6561 , G11B20/18 , G11B20/1833 , H03M13/11 , H03M13/1102 , H03M13/1105 , H03M13/25 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H03M13/45 , H03M13/6362 , H04L1/0041 , H04L1/0045 , H04L1/005 , H04L1/0058 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/1671 , H04L27/18 , H04L27/2602
摘要： Variable modulation within combined LDPC (Low Density Parity Check) coding and modulation coding systems. Variable modulation encoding of LDPC coded symbols is presented. In addition, LDPC encoding, that generates an LDPC variable code rate signal, may also be performed as well. The encoding can generate an LDPC variable code rate and/or modulation signal whose code rate and/or modulation may vary as frequently as on a symbol by symbol basis. Some embodiments employ a common constellation shape for all of the symbols of the signal sequence, yet individual symbols may be mapped according different mappings of the commonly shaped constellation; such an embodiment may be viewed as generating a LDPC variable mapped signal. In general, any one or more of the code rate, constellation shape, or mapping of the individual symbols of a signal sequence may vary as frequently as on a symbol by symbol basis.
摘要翻译：组合LDPC（低密度奇偶校验）编码和调制编码系统中的可变调制。提出了LDPC编码符号的可变调制编码。此外，也可以执行生成LDPC可变码率信号的LDPC编码。该编码可以生成其码率和/或调制可以像逐个符号一样频繁地变化的LDPC可变码率和/或调制信号。一些实施例对信号序列的所有符号采用公共星座形状，但是可以根据共同形状的星座图的不同映射来映射各个符号; 这样的实施例可以被视为生成LDPC可变映射信号。通常，信号序列的各个符号的码率，星座形状或映射中的任何一个或多个可以像逐个符号一样频繁地变化。

7. 发明授权

US07975202B2 Variable modulation with LDPC (low density parity check) coding 失效
标题翻译：具有LDPC（低密度奇偶校验）编码的可变调制
公开(公告)号：US07975202B2
公开(公告)日：2011-07-05
申请号：US11542484
申请日：2006-10-03
申请人： Ba-Zhong Shen , Hau Thien Tran , Kelly Brian Cameron
发明人： Ba-Zhong Shen , Hau Thien Tran , Kelly Brian Cameron
IPC分类号： H03M13/00
CPC分类号： H03M13/6561 , G11B20/18 , G11B20/1833 , H03M13/11 , H03M13/1102 , H03M13/1105 , H03M13/25 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H03M13/45 , H03M13/6362 , H04L1/0041 , H04L1/0045 , H04L1/005 , H04L1/0058 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/1671 , H04L27/18 , H04L27/2602
摘要： Variable modulation with LDPC (Low Density Parity Check) coding provides for generation of LDPC coded symbols having different respective code rates and/or modulations. In addition, appropriate LDPC encoding, that generates an LDPC variable code rate signal, may also be performed as well. The encoding can generate an LDPC variable code rate and/or modulation signal whose code rate and/or modulation may vary as frequently as on a symbol by symbol basis. Some embodiments employ a common constellation shape for all of the symbols of the signal sequence, yet individual symbols may be mapped according different mappings of the commonly shaped constellation; such an embodiment may be viewed as generating a LDPC variable mapped signal. In general, any one or more of the code rate, constellation shape, and/or mapping of the individual symbols of a signal sequence may vary as frequently as on a symbol by symbol basis.
摘要翻译：使用LDPC（低密度奇偶校验）编码的可变调制提供具有不同的相应代码率和/或调制的LDPC编码符号的生成。此外，也可以执行生成LDPC可变码率信号的适当的LDPC编码。该编码可以生成其码率和/或调制可以像逐个符号一样频繁地变化的LDPC可变码率和/或调制信号。一些实施例对信号序列的所有符号采用公共星座形状，但是可以根据共同形状的星座图的不同映射来映射各个符号; 这样的实施例可以被视为生成LDPC可变映射信号。通常，信号序列的各个符号的码率，星座形状和/或映射中的任何一个或多个可以像按符号依据一样频繁地变化。

8. 发明申请

US20100138721A1 Overlapping sub-matrix based LDPC (Low Density Parity Check) decoder 有权
标题翻译：重叠的基于子矩阵的LDPC（低密度奇偶校验）解码器
公开(公告)号：US20100138721A1
公开(公告)日：2010-06-03
申请号：US12651453
申请日：2010-01-01
申请人： Hau Thien Tran , Kelly Brian Cameron , Ba-Zhong Shen , Tak K. Lee
发明人： Hau Thien Tran , Kelly Brian Cameron , Ba-Zhong Shen , Tak K. Lee
IPC分类号： H03M13/29 , G06F11/10 , H03M13/05
CPC分类号： H03M13/1162 , H03M13/1117 , H03M13/112 , H03M13/1122 , H03M13/1125 , H03M13/1137 , H03M13/114 , H03M13/1165 , H03M13/1185 , H03M13/616 , H03M13/6505 , H03M13/658 , H03M13/6583
摘要： Overlapping sub-matrix based LDPC (Low Density Parity Check) decoder. Novel decoding approach is presented, by which, updated bit edge messages corresponding to a sub-matrix of an LDPC matrix are immediately employed for updating of the check edge messages corresponding to that sub-matrix without requiring storing the bit edge messages; also updated check edge messages corresponding to a sub-matrix of the LDPC matrix are immediately employed for updating of the bit edge messages corresponding to that sub-matrix without requiring storing the check edge messages. Using this approach, twice as many decoding iterations can be performed in a given time period when compared to a system that performs updating of all check edge messages for the entire LDPC matrix, then updating of all bit edge messages for the entire LDPC matrix, and so on. When performing this overlapping approach in conjunction with min-sum processing, significant memory savings can also be achieved.
摘要翻译：重叠的基于子矩阵的LDPC（低密度奇偶校验）解码器。提出了新的解码方法，通过该方法，立即采用对应于LDPC矩阵的子矩阵的更新的位边消息来更新与该子矩阵相对应的校验边消息，而不需要存储位边消息; 立即采用对应于LDPC矩阵的子矩阵的更新的校验边消息来更新与该子矩阵相对应的位边消息，而不需要存储校验边消息。与执行整个LDPC矩阵的所有校验边消息的更新的系统相比，使用这种方法，在给定时间段内可以执行两倍的解码迭代，然后更新整个LDPC矩阵的所有位边消息，以及所以。当结合最小和处理执行这种重叠方法时，也可以节省大量的内存。

9. 发明申请

US20090327847A1 LDPC (Low Density Parity Check) codes with corresponding parity check matrices selectively constructed with CSI (Cyclic Shifted Identity) and null sub-matrices 失效
标题翻译：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
公开(公告)号：US20090327847A1
公开(公告)日：2009-12-31
申请号：US12533306
申请日：2009-07-31
申请人： Ba-Zhong Shen , Hau Thien Tran , Tak K. Lee , Kelly Brian Cameron
发明人： Ba-Zhong Shen , Hau Thien Tran , Tak K. Lee , Kelly Brian Cameron
IPC分类号： G06F11/10
CPC分类号： H03M13/1174 , H03M13/1151 , H03M13/1185 , H03M13/1188 , H03M13/1515 , H04L1/0068
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”）。

10. 发明申请

US20090193312A1 FIXED-SPACING PARITY INSERTION FOR FEC (FORWARD ERROR CORRECTION) CODEWORDS 有权
标题翻译：用于FEC（前向纠错）编码的固定间隔奇偶校验插入
公开(公告)号：US20090193312A1
公开(公告)日：2009-07-30
申请号：US12021911
申请日：2008-01-29
申请人： Tak K. Lee , Ba-Zhong Shen , Hau Thien Tran , Kelly Brian Cameron
发明人： Tak K. Lee , Ba-Zhong Shen , Hau Thien Tran , Kelly Brian Cameron
IPC分类号： H04L1/18
CPC分类号： H04L1/0043 , H04L1/0057 , H04L1/009
摘要： Fixed-spacing parity insertion for FEC (Forward Error Correction) codewords. Fixed spacing is employed to intersperse parity bits among information bits when generating a codeword. According to this fixed spacing, a same number of information bits is placed between each of the parity bits within the codeword. If desired, the order of the parity bits may be changed before they are placed into the codeword. Moreover, the order of the information bits may also be modified before they are placed into the codeword. The FEC encoding employed to generate the parity bits from the information bits can be any of a variety of codes include Reed-Solomon (RS) code, LDPC (Low Density Parity Check) code, turbo code, turbo trellis coded modulation (TTCM), or some other code providing FEC capabilities.
摘要翻译：用于FEC（前向纠错）码字的固定间隔奇偶校验插入。当产生码字时，使用固定间隔来分散信息比特之间的奇偶比特。根据该固定间隔，在码字中的每个奇偶校验位之间放置相同数量的信息比特。如果需要，奇偶校验位的顺序可以在它们被置入码字之前改变。此外，信息比特的顺序也可以在它们被置入码字之前被修改。用于从信息比特生成奇偶校验位的FEC编码可以是各种代码中的任何一种，包括里德 - 所罗门（RS）码，LDPC（低密度奇偶校验）码，turbo码，turbo格状编码调制（TTCM）或提供FEC能力的一些其他代码。

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