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101. 发明授权

US08255760B2 Header encoding for single carrier (SC) and/or orthogonal frequency division multiplexing (OFDM) using shortening, puncturing, and/or repetition 有权
公开(公告)号：US08255760B2
公开(公告)日：2012-08-28
申请号：US12612648
申请日：2009-11-04
申请人： Jason A. Trachewsky , Ba-Zhong Shen
发明人： Jason A. Trachewsky , Ba-Zhong Shen
IPC分类号： G06F11/00
CPC分类号： H03M13/1102 , H03M13/6356 , H03M13/6362 , H04L1/0068 , H04L1/0079 , H04L1/08 , H04L27/2601
摘要： Header encoding for SC and/or OFDM signaling using shortening, puncturing, and/or repetition in accordance with encoding header information within a frame to be transmitted via a communication channel employs different respective puncturing patterns as applied to different portions thereof. For example, a first puncturing pattern is applied to a first portion of the frame, and a second puncturing pattern is applied to a second portion of the frame (the second portion may be a repeated version of the first portion). Shortening (e.g., by padding 0-valued bits thereto) may be made to header information bits before they undergo encoding (e.g., in an LDPC encoder). One or both of the information bits and parity/redundancy bits output from the encoder undergo selective puncturing. Moreover, one or both of the information bits and parity/redundancy bits output from the encoder may be repeated/spread before undergoing selective puncturing to generate a header.

102. 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。

103. 发明申请

US20120195398A1 Virtual limited buffer modification for rate matching 有权
公开(公告)号：US20120195398A1
公开(公告)日：2012-08-02
申请号：US13429553
申请日：2012-03-26
申请人： Ba-Zhong Shen , Sirikiat Lek Ariyavisitakul , Tak K. Lee
发明人： Ba-Zhong Shen , Sirikiat Lek Ariyavisitakul , Tak K. Lee
IPC分类号： H04L27/06
CPC分类号： H03M13/2957 , H03M13/2739 , H03M13/6306 , H03M13/6356 , H03M13/6362 , H03M13/653 , H04L1/005 , H04L1/0066 , H04L1/0067 , H04L1/1819
摘要： Virtual limited buffer modification for rate matching. A reduced-size memory module is employed within a communication device to assist in storage of log-likelihood ratios (LLRs) employed in accordance with turbo decoding. This architecture is also applicable to other types of error correction code (ECC) besides turbo code as well. The memory size is selected to match the number of coded bits (e.g., including information bits and redundancy/parity bits) that is included within a transmission. The received signals may be various transmissions made in accordance with hybrid automatic repeat request (HARQ) transmissions. When the LLRs calculated from a first HARQ transmission is insufficient to decode, those LLRs are selectively stored in the memory module. When LLRs corresponding to a second HARQ transmission is received, LLRs corresponding to both the first HARQ transmission and the second HARQ transmission are passed from the memory module for joint use in decoding.

104. 发明申请

US20120177100A1 DATA PUNCTURING ENSURING ORTHOGONALITY WITHIN COMMUNICATION SYSTEMS 有权
标题翻译：数据处理在通信系统中保持正交性
公开(公告)号：US20120177100A1
公开(公告)日：2012-07-12
申请号：US13429532
申请日：2012-03-26
申请人： Tak K. Lee , Ba-Zhong Shen
发明人： Tak K. Lee , Ba-Zhong Shen
IPC分类号： H04B1/66
CPC分类号： H04L1/0069 , H03M13/6306 , H03M13/6368 , H04L1/1819 , H04L1/1867
摘要： Data puncturing ensuring orthogonality within communication systems. Puncturing is employed within communication systems to ensure orthogonality (or substantial orthogonality) of various transmissions between communication devices within communication systems. Any of a variety of types of signals can be employed herein including uncoded signals, turbo encoded signals, turbo trellis coded modulation (TTCM) encoded signals, LDPC (Low Density Parity Check) encoded signals, and RS (Reed-Solomon) encoded signals, among just some types of signals. A first transmission can be made from a first communication device to a second communication device, and the second communication device can sometimes request a subsequent transmission (e.g., a re-transmission) from the first communication device to the second communication device. Oftentimes, different information is sent from the first communication device to the second communication device within the subsequent transmission. Herein, each of these transmissions can be ensured to be orthogonal.
摘要翻译：数据穿孔确保通信系统内的正交性。在通信系统中采用穿刺以确保通信系统内的通信设备之间的各种传输的正交性（或实质正交性）。可以使用各种类型的信号中的任何一种，包括未编码信号，turbo编码信号，turbo网格编码调制（TTCM）编码信号，LDPC（低密度奇偶校验）编码信号和RS（Reed-Solomon）编码信号）只是一些类型的信号。可以从第一通信设备到第二通信设备进行第一传输，并且第二通信设备有时可以请求从第一通信设备到第二通信设备的后续传输（例如，重新发送）。通常，在随后的传输中，不同的信息从第一通信设备发送到第二通信设备。这里，可以确保这些传输中的每一个是正交的。

105. 发明授权

US08145970B2 Data puncturing ensuring orthogonality within communication systems 有权
标题翻译：数据穿孔确保通信系统内的正交性
公开(公告)号：US08145970B2
公开(公告)日：2012-03-27
申请号：US11851147
申请日：2007-09-06
申请人： Tak K. Lee , Ba-Zhong Shen
发明人： Tak K. Lee , Ba-Zhong Shen
IPC分类号： H03M13/00 , H04L1/18
CPC分类号： H04L1/0069 , H03M13/6306 , H03M13/6368 , H04L1/1819 , H04L1/1867
摘要： Data puncturing ensuring orthogonality within communication systems. Puncturing is employed within communication systems to ensure orthogonality (or substantial orthogonality) of various transmissions between communication devices within communication systems. Any of a variety of types of signals can be employed herein including uncoded signals, turbo encoded signals, turbo trellis coded modulation (TTCM) encoded signals, LDPC (Low Density Parity Check) encoded signals, and a RS (Reed-Solomon) encoded signals, among just some types of signals. A first transmission can be made from a first communication device to a second communication device, and the second communication device can sometimes request a subsequent transmission (e.g., a re-transmission) from the first communication device to the second communication device. Oftentimes, different information is sent from the first communication device to the second communication device within the subsequent transmission. Herein, each of these transmissions can be ensured to be orthogonal.
摘要翻译：数据穿孔确保通信系统内的正交性。在通信系统中采用穿刺以确保通信系统内的通信设备之间的各种传输的正交性（或实质正交性）。可以使用各种类型的信号中的任何一种，包括未编码信号，turbo编码信号，turbo格状编码调制（TTCM）编码信号，LDPC（低密度奇偶校验）编码信号和RS（里德 - 所罗门）编码信号只是一些类型的信号。可以从第一通信设备到第二通信设备进行第一传输，并且第二通信设备有时可以请求从第一通信设备到第二通信设备的后续传输（例如，重新发送）。通常，在随后的传输中，不同的信息从第一通信设备发送到第二通信设备。这里，可以确保这些传输中的每一个是正交的。

106. 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。

107. 发明授权

US07882416B2 General and algebraic-constructed contention-free memory mapping for parallel turbo decoding with algebraic interleave ARP (almost regular permutation) of all possible sizes 有权
标题翻译：通用和代数构造的无争用内存映射，用于并行turbo解码，具有所有可能尺寸的代数交错ARP（几乎规则排列）
公开(公告)号：US07882416B2
公开(公告)日：2011-02-01
申请号：US11704068
申请日：2007-02-08
申请人： Ba-Zhong Shen , Tak K. Lee
发明人： Ba-Zhong Shen , Tak K. Lee
IPC分类号： H03M13/00
CPC分类号： H03M13/2775 , H03M13/2957 , H03M13/2978 , H03M13/6525 , H03M13/6561
摘要： General and algebraic-constructed contention-free memory mapping for parallel turbo decoding with algebraic interleave ARP (almost regular permutation) of all possible sizes. A novel means is presented in which contention-free memory mapping is truly achieved in the context of performing parallel decoding of a turbo coded signal. A novel means of performing the contention-free memory mapping is provided to ensure that any one turbo decoder (of a group of parallel arranged turbo decoders) accesses only memory (of a group of parallel arranged memories) at any given time. In doing so, access conflicts between the turbo decoders and the memories are avoided.
摘要翻译：通用和代数构造的无竞争存储器映射，用于具有所有可能大小的代数交织ARP（几乎规则排列）的并行turbo解码。提出了一种新颖的手段，其中在执行turbo编码信号的并行解码的上下文中真正地实现了无竞争存储器映射。提供执行无竞争存储器映射的新颖方式，以确保任何一个turbo解码器（一组并行布置的turbo解码器）在任何给定时间仅访问存储器（一组并行布置的存储器）。在这样做时，避免turbo解码器和存储器之间的访问冲突。

108. 发明申请

US20100251064A1 LDPC codes robust to non-stationary narrowband ingress noise 有权
标题翻译： LDPC码对非平稳窄带入侵噪声的鲁棒性
公开(公告)号：US20100251064A1
公开(公告)日：2010-09-30
申请号：US12748547
申请日：2010-03-29
申请人： Ba-Zhong Shen , Avi Kliger
发明人： Ba-Zhong Shen , Avi Kliger
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/116 , H03M13/033 , H03M13/1148 , H03M13/1177 , H03M13/118 , H03M13/31
摘要： LDPC codes robust to non-stationary narrowband ingress noise. Particularly designed LDPC codes are adapted to address deleterious noise-effects incurred within LDPC coded signals that propagate via a communication channel (such as from a transmitting communication device to a receiving communication device). Such LDPC matrices employed for encoding and/or decoding such LDPC coded signals are composed of sub-matrices (e.g., all-zero values sub-matrices and/or CSI (Cyclic Shifted Identity) sub-matrices). The sub-matrices are generally uniform in size and square in shape. Based on certain operational conditions, such as communication channel noise, various operations within a communication device are adaptively modified (e.g., signaling, modulation, demodulation, symbol mapping, metric generation, decoding, etc.). Various types of signaling may be employed for such LDPC coded signals including orthogonal frequency division multiplexing (OFDM) signaling, which may include employing symbols of different size therein (e.g., symbols with x and y bits, respectively, with x and y being integers).
摘要翻译： LDPC码对非平稳窄带入侵噪声的鲁棒性。特别设计的LDPC码适用于解决经由通信信道（例如从发送通信设备到接收通信设备）传播的LDPC编码信号中产生的有害噪声效应。用于编码和/或解码这样的LDPC编码信号的这样的LDPC矩阵由子矩阵（例如，全零值子矩阵和/或CSI（循环移位标识）子矩阵）组成。子矩阵的大小和形状通常大致均匀。基于诸如通信信道噪声的某些操作条件，自适应地修改通信设备内的各种操作（例如，信令，调制，解调，符号映射，度量生成，解码等）。可以对包括正交频分复用（OFDM）信令的这种LDPC编码信号采用各种类型的信令，其可以包括在其中使用不同大小的符号（例如，分别具有x和y位的符号，其中x和y是整数）。

109. 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。

110. 发明申请

US20100115371A1 Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding 有权
标题翻译：选择性合并和部分重用LDPC（低密度奇偶校验）代码构造用于有限数量层信念传播（BP）解码
公开(公告)号：US20100115371A1
公开(公告)日：2010-05-06
申请号：US12561374
申请日：2009-09-17
申请人： Ba-Zhong Shen , Andrew J. Blanksby , Jason A. Trachewsky
发明人： Ba-Zhong Shen , Andrew J. Blanksby , Jason A. Trachewsky
IPC分类号： H03M13/05 , G06F11/10
CPC分类号： H03M13/616 , H03M13/033 , H03M13/1137 , H03M13/114 , H03M13/1148 , H03M13/116 , H03M13/13 , H03M13/635 , H03M13/6516 , H04L1/0057
摘要： Selective merge and partial reuse LDPC (Low Density Parity Check) code construction for limited number of layers Belief Propagation (BP) decoding. Multiple LDPC matrices may be generated from a base code, such that multiple/distinct LDPC coded signals may be encoded and/or decoded within a singular communication device. Generally speaking, a first LDPC matrix is modified in accordance with one or more operations thereby generating a second LDPC matrix, and the second LDPC matrix is employed in accordance with encoding an information bit thereby generating an LDPC coded signal (alternatively performed using an LDPC generator matrix corresponding to the LDPC matrix) and/or decoding processing of an LDPC coded signal thereby generating an estimate of an information bit encoded therein. The operations performed on the first LDPC matrix may be any one of, or combination of, selectively merging, deleting, partially re-using one or more sub-matrix rows, and/or partitioning sub-matrix rows.
摘要翻译：选择性合并和部分重用LDPC（低密度奇偶校验）代码构造用于有限数量的层次信念传播（BP）解码。可以从基本码产生多个LDPC矩阵，使得可以在单个通信设备内编码和/或解码多个/不同的LDPC编码信号。一般来说，根据一个或多个操作来修改第一个LDPC矩阵，从而生成第二个LDPC矩阵，并且根据对信息比特的编码采用第二个LDPC矩阵，从而生成一个LDPC编码信号（或者使用一个LDPC生成器对应于LDPC矩阵的矩阵）和/或LDPC编码信号的解码处理，从而生成其中编码的信息比特的估计。在第一LDPC矩阵上执行的操作可以是选择性地合并，删除，部分地重新使用一个或多个子矩阵行和/或分割子矩阵行中的任何一个或组合。

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