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1.发明申请Communication device employing LDPC (Low Density Parity Check) coding with Reed-Solomon (RS) and/or binary product coding 审中-公开采用Reed-Solomon（RS）和/或二进制产品编码的LDPC（低密度奇偶校验）编码的通信设备公开(公告)号：US20100241923A1
公开(公告)日：2010-09-23
申请号：US12726219
申请日：2010-03-17
申请人： Zhongfeng Wang , Ba-Zhong Shen , Kang Xiao , James R. Fife , Sudeep Bhoja
发明人： Zhongfeng Wang , Ba-Zhong Shen , Kang Xiao , James R. Fife , Sudeep Bhoja
CPC分类号： H03M13/255 , H03M13/1102 , H03M13/1515 , H03M13/253 , H03M13/2909 , H04L1/0057
摘要： Communication device employing LDPC (Low Density Parity Check) coding with Reed-Solomon (RS) and/or binary product coding. An LDPC code is concatenated with a RS code or a binary product code (e.g., using row and column encoding of matrix formatted bits) thereby generating coded bits for use in generating a signal that is suitable to be launched into a communication channel. Various ECCs/FECs may be employed including a BCH (Bose and Ray-Chaudhuri, and Hocquenghem) code, a Reed-Solomon (RS) code, an LDPC (Low Density Parity Check) code, etc. and various implementations of cyclic redundancy check (CRC) may accompany the product coding and/or additional ECC/FEC employed. The redundancy of such coded signals as generated using the principles herein are in the range of approximately 20% thereby providing a significant amount of redundancy and a high coding gain. Soft decision decoding may be performed on such coded signal generated herein.
摘要翻译： 采用Reed-Solomon（RS）和/或二进制产品编码的LDPC（低密度奇偶校验）编码的通信设备。 LDPC码与RS码或二进制乘积码（例如，使用矩阵格式比特的行和列编码）连接，从而生成用于生成适合于发送到通信信道中的信号的编码比特。 可以采用各种ECC / FEC，包括BCH（Bose和Ray-Chaudhuri和Hocquenghem）码，Reed-Solomon（RS）码，LDPC（低密度奇偶校验）码等）和循环冗余校验的各种实现 （CRC）可以伴随产品编码和/或所使用的附加ECC / FEC。 使用本文原理生成的这种编码信号的冗余度在大约20％的范围内，从而提供显着量的冗余度和高的编码增益。 可以对这里生成的这种编码信号执行软判决解码。
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公开(公告)号：US09231616B2
公开(公告)日：2016-01-05
申请号：US13523818
申请日：2012-06-14
申请人： Brian Heng , Ba-Zhong Shen
发明人： Brian Heng , Ba-Zhong Shen
CPC分类号： H03M7/4006 , H03M7/40 , H03M7/4018 , H04N19/13 , H04N19/156 , H04N19/91
摘要： Unified binarization for CABAC/CAVLC entropy coding. Scalable entropy coding is implemented in accordance with any desired degree of complexity (e.g., entropy encoding and/or decoding). For example, appropriately implemented context-adaptive variable-length coding (CAVLC) and context-adaptive binary arithmetic coding (CABAC) allow for selective entropy coding in accordance with a number of different degrees of complexity. A given device may operate in accordance with a first level complexity a first time, a second level complexity of the second time, and so on. Appropriate coordination and signaling between an encoder/transmitter device and a decoder/receiver device allows for appropriate coordination along a desired degree of complexity. For example, a variable length binarization module and an arithmetic encoding module may be implemented within an encoder/transmitter device and a corresponding arithmetic decoding module and a variable length bin decoding module may be implemented within a decoder/receiver device allowing for entropy coding along various degrees of complexity.
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公开(公告)号：US08683288B2
公开(公告)日：2014-03-25
申请号：US13537170
申请日：2012-06-29
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。
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4.发明授权True bit level decoding of TTCM (turbo trellis coded modulation) of variable rates and signal constellations 有权真正的比特级解码TTCM（turbo网格编码调制）的可变速率和信号星座公开(公告)号：US08473822B2
公开(公告)日：2013-06-25
申请号：US12627438
申请日：2009-11-30
IPC分类号： H03M13/45
CPC分类号： H04L1/005 , H03M13/256 , H03M13/258 , H03M13/27 , H03M13/2767 , H03M13/2771 , H03M13/2785 , H03M13/2957 , H03M13/4123 , H03M13/4161 , H04L1/0055 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071
摘要： True bit level decoding of TTCM (Turbo Trellis Coded Modulation) of variable rates and signal constellations. A decoding approach is presented that allows for decoding on a bit level basis that allows for discrimination of the individual bits of a symbol. Whereas prior art approaches typically perform decoding on a symbol level basis, this decoding approach allows for an improved approach in which the hard decisions/best estimates may be made individually for each of the individual bits of an information symbol. In addition, the decoding approach allows for a reduction in the total number of calculations that need to be performed as well as the total number of values that need to be stored during the iterative decoding. The bit level decoding approach is also able to decode a signal whose code rate and/or signal constellation type (and mapping) may vary on a symbol by symbol basis.
摘要翻译： TTCM（Turbo Trellis编码调制）的可变速率和信号星座的真位解码。 提出了一种解码方法，其允许基于比特级的解码，其允许区分符号的各个比特。 而现有技术方法通常在符号级基础上执行解码，这种解码方法允许改进的方法，其中可以针对信息符号的各个比特分别进行硬判决/最佳估计。 此外，解码方法允许减少需要执行的计算的总数以及在迭代解码期间需要存储的值的总数。 比特级解码方法还能够解码其码率和/或信号星座类型（和映射）可以在逐个符号的基础上变化的信号。
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公开(公告)号：US08437362B2
公开(公告)日：2013-05-07
申请号：US13558985
申请日：2012-07-26
申请人： Christopher J. Hansen , Jason A. Trachewsky , Nambirajan Seshadri , Kelly Brian Cameron , Hau Thien Tran , Ba-Zhong Shen
发明人： Christopher J. Hansen , Jason A. Trachewsky , Nambirajan Seshadri , Kelly Brian Cameron , Hau Thien Tran , Ba-Zhong Shen
IPC分类号： H04W76/00
CPC分类号： H04B7/0613 , H04B7/0413
摘要： A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication.
摘要翻译： 一种用于非对称MIMO无线通信的方法是通过确定用于非对称MIMO无线通信的多个发送天线来开始的。 该方法通过确定用于非对称MIMO无线通信的接收天线的数量来继续。 当发送天线的数量超过接收天线的数量时，该方法继续使用用于非对称MIMO无线通信的空间时间块编码。 当发送天线的数量不超过接收天线的数量时，该方法继续使用用于非对称MIMO无线通信的空间复用。
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6.发明授权Communication device architecture for in-place constructed LDPC (low density parity check) code 有权用于就地构造的LDPC（低密度奇偶校验）码的通信设备架构公开(公告)号：US08433971B2
公开(公告)日：2013-04-30
申请号：US12770068
申请日：2010-04-29
IPC分类号： H03M13/00
CPC分类号： H03M13/1102 , H03M13/033 , H03M13/1134 , H03M13/1137 , H03M13/116 , H03M13/1185 , H03M13/1188 , H03M13/618 , H03M13/6362 , H03M13/6393 , H03M13/6502 , H03M13/6516 , H03M13/6527 , H04L1/005 , H04L1/0057
摘要： Communication device architecture for in-place constructed LDPC (Low Density Parity Check) code. Intelligent design of LDPC codes having similar characteristics there between allows for a very efficient hardware implementation of a communication device that is operative to perform encoding of respective information bit groups using more than one type of LDPC codes. A switching module can select any one of the LDPC codes within an in-place LDPC code for use by an LDPC encoder circuitry to generate an LDPC coded signal. Depending on which sub-matrices of a superimposed LDPC matrix are enabled or disabled, one of the LDPC matrices from within an in-place LDPC code matrix set may be selected. A corresponding, respective generator matrix may be generated from each respective LDPC matrix. Selection among the various LDPC codes may be in accordance with a predetermined sequence, of based operating conditions of the communication device or communication system.
摘要翻译： 用于就地构造的LDPC（低密度奇偶校验）码的通信设备架构。 具有相似特性的LDPC码的智能设计允许通信设备的非常有效的硬件实现，该通信设备可操作以使用多于一种类型的LDPC码执行各个信息位组的编码。 交换模块可以在就地LDPC码内选择任何一个LDPC码，供LDPC编码器电路使用以产生LDPC编码信号。 根据叠加的LDPC矩阵的哪些子矩阵被使能或禁用，可以选择来自就地内LDPC码矩阵集合的LDPC矩阵之一。 可以从每个相应的LDPC矩阵生成相应的相应的生成器矩阵。 各种LDPC码之间的选择可以与通信设备或通信系统的基于操作条件的预定顺序相一致。
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公开(公告)号：US20130077697A1
公开(公告)日：2013-03-28
申请号：US13523830
申请日：2012-06-14
申请人： Peisong Chen , Ba-Zhong Shen , Wade K. Wan
发明人： Peisong Chen , Ba-Zhong Shen , Wade K. Wan
IPC分类号： H04N7/26
CPC分类号： H04N19/82 , H04N19/117 , H04N19/147 , H04N19/174 , H04N19/176 , H04N19/46 , H04N19/61
摘要： Adaptive loop filtering in accordance with video coding. An adaptive loop filter (ALF) and/or other in-loop filters (e.g., sample adaptive offset (SAO) filter, etc.) may be implemented within various video coding architectures (e.g., encoding and/or decoding architectures) to perform both offset and scaling processing, only scaling processing, and/or only offset processing. Operation of such an ALF may be selective in accordance with any of multiple respective operational modes at any given time and may be adaptive based upon various consideration(s) (e.g., desired complexity level, processing type, local and/or remote operational conditions, etc.). For example, an ALF may be applied to a decoded picture before it is stored in a picture buffer (or digital teacher buffer (DPB)). An ALF can provide for coding noise reduction of a decoded picture, and the filtering operations performed thereby may be selective (e.g., on a slice by slice basis, block by block basis, etc.).
摘要翻译： 根据视频编码进行自适应环路滤波。 可以在各种视频编码架构（例如，编码和/或解码架构）内实现自适应环路滤波器（ALF）和/或其他环路滤波器（例如，采样自适应偏移（SAO）滤波器等）以执行两者 偏移和缩放处理，仅缩放处理和/或仅偏移处理。 这种ALF的操作可以根据任何给定时间的多个相应的操作模式中的任何一个来选择，并且可以基于各种考虑（例如，期望的复杂性水平，处理类型，本地和/或远程操作条件， 等等。）。 例如，可以将ALF存储在图像缓冲器（或数字教师缓冲器（DPB））中之前将其应用于解码图像。 ALF可以提供解码图像的编码噪声降低，并且由此执行的滤波操作可以是选择性的（例如，逐个逐个基础，逐个基础地等）。
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公开(公告)号：US08341492B2
公开(公告)日：2012-12-25
申请号：US12508459
申请日：2009-07-23
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： H03M13/1105 , H04L1/0068
摘要： Quasi-cyclic LDPC (Low Density Parity Check) code construction is presented that ensures no four cycles therein (e.g., in the bipartite graphs corresponding to the LDPC codes). Each LDPC code has a corresponding LDPC matrix that is composed of square sub-matrices, and based on the size of the sub-matrices of a particular LDPC matrix, then sub-matrix-based cyclic shifting is performed as not only a function of sub-matrix size, but also the row and column indices, to generate CSI (Cyclic Shifted Identity) sub-matrices. When the sub-matrix size is prime (e.g., each sub-matrix being size q×q, where q is a prime number), then it is guaranteed that no four cycles will exist in the resulting bipartite graph corresponding to the LDPC code of that LDPC matrix. When q is a non-prime number, an avoidance set can be used and/or one or more sub-matrices can be made to be an all zero-valued sub-matrix.
摘要翻译： 提出了准循环LDPC（Low Density Parity Check，低密度奇偶校验）码构造，其中不存在四个周期（例如，在对应于LDPC码的二分图中）。 每个LDPC码具有由平方子矩阵组成的对应的LDPC矩阵，并且基于特定LDPC矩阵的子矩阵的大小，然后基于子矩阵的循环移位不仅作为子函数执行 - 矩阵大小，也是行和列索引，以生成CSI（循环移位标识）子矩阵。 当子矩阵大小为素数（例如，每个子矩阵的大小为q×q，其中q为质数）时，则保证在对应于LDPC码的LDPC码的所得到的二分图中不存在四个周期 那个LDPC矩阵。 当q是非素数时，可以使用回避集合和/或可以使一个或多个子矩阵成为全零值子矩阵。
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9.发明授权公开(公告)号：US08301967B2
公开(公告)日：2012-10-30
申请号：US12843558
申请日：2010-07-26
IPC分类号： G06F11/00
CPC分类号： H04N21/437 , H03M13/29 , H03M13/2957 , H03M13/2966 , H03M13/6511 , H04L12/2801 , H04N7/17309
摘要： A method of transmitting data in a cable modem system includes the steps of encoding the data using forward error correction. The data is then encoded with Turbo encoding. The data is then sent to a modulation scheme. The data is then transmitted over a cable channel. The data is then demodulated. The data is then decoded using a Turbo decoder. An inverse of the forward error correction is then applied to the data.
摘要翻译： 在电缆调制解调器系统中发送数据的方法包括使用前向纠错对数据进行编码的步骤。 然后使用Turbo编码对数据进行编码。 然后将数据发送到调制方案。 然后通过有线信道传输数据。 然后解调数据。 然后使用Turbo解码器对数据进行解码。 然后将前向纠错的逆向应用于数据。
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公开(公告)号：US08254407B2
公开(公告)日：2012-08-28
申请号：US12783730
申请日：2010-05-20
申请人： Christopher J. Hansen , James A. Trachewsky , Nambirajan Seshadri , Kelly B. Cameron , Hau Thien Tran , Ba-Zhong Shen
发明人： Christopher J. Hansen , James A. Trachewsky , Nambirajan Seshadri , Kelly B. Cameron , Hau Thien Tran , Ba-Zhong Shen
IPC分类号： H04W76/00
CPC分类号： H04B7/0613 , H04B7/0413
摘要： A method for asymmetrical MIMO wireless communication begins by determining a number of transmission antennas for the asymmetrical MIMO wireless communication. The method continues by determining a number of reception antennas for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas exceeds the number of reception antennas, using spatial time block coding for the asymmetrical MIMO wireless communication. The method continues by, when the number of transmission antennas does not exceed the number of reception antennas, using spatial multiplexing for the asymmetrical MIMO wireless communication.
摘要翻译： 一种用于非对称MIMO无线通信的方法是通过确定用于非对称MIMO无线通信的多个发送天线来开始的。 该方法通过确定用于非对称MIMO无线通信的接收天线的数量来继续。 当发送天线的数量超过接收天线的数量时，该方法继续使用用于非对称MIMO无线通信的空间时间块编码。 当发送天线的数量不超过接收天线的数量时，该方法继续使用用于非对称MIMO无线通信的空间复用。
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