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11. 发明授权

US07472335B1 Symbol by symbol variable code rate capable communication device 有权
标题翻译：符号可变码率符号符号通讯装置
公开(公告)号：US07472335B1
公开(公告)日：2008-12-30
申请号：US10338185
申请日：2003-01-08
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： H03M13/03
CPC分类号： H04L1/006 , H03M13/258 , H04L1/0009 , H04L1/0066 , H04L1/0068
摘要： Symbol by symbol variable code rate capable communication device. A communication device is operable to perform processing of a variable code rate signal whose code rate varies on a symbol by symbol basis. This may involve performing encoding of input to generate the variable code rate signal; alternatively, this may involve performing decoding of a variable code rate signal. In doing so, this approach may involve using a single encoder and/or decoder (depending on the application). In some instances, a single device is operable to encode a first variable code rate signal (for transmission to another device) and to decode a second variable code rate signal (that has been received from another device). In addition, a method of coding (including one or both of encoding and decoding) may also operate of a variable code rate signal whose code rate varies on a symbol by symbol basis.
摘要翻译：符号可变码率符号符号通讯装置。通信装置可操作以执行码率根据符号依次变化的可变码率信号的处理。这可以涉及执行输入的编码以生成可变码率信号; 或者，这可能涉及执行可变码率信号的解码。在这样做时，该方法可能涉及使用单个编码器和/或解码器（取决于应用）。在一些情况下，单个设备可操作地对第一可变码率信号（用于传输到另一设备）进行编码并对第二可变码率信号（已从另一设备接收到的信号）进行解码。此外，编码（包括编码和解码中的一个或两个）的方法也可以对码率根据符号依次变化的可变码率信号进行操作。

12. 发明授权

US07322005B2 LDPC (Low Density Parity Check) coded modulation symbol decoding using non-Gray code maps for improved performance 有权
标题翻译： LDPC（低密度奇偶校验）编码调制符号解码，使用非格雷码图进行改进
公开(公告)号：US07322005B2
公开(公告)日：2008-01-22
申请号：US10802023
申请日：2004-03-16
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： G06F11/00 , H03M13/00
CPC分类号： H04L1/005 , G11B20/1833 , H03M13/1102 , H03M13/1105 , H03M13/1117 , H03M13/112 , H03M13/25 , H03M13/255 , H03M13/256 , H03M13/258 , H03M13/2957 , H03M13/4161 , H03M13/45 , H03M13/6583 , H04L1/0041 , H04L1/0058 , H04L1/006 , H04L1/0071 , H04L1/1671 , H04L5/0007 , H04L25/03184 , H04L27/186 , H04L27/22 , H04L2025/03611
摘要： LDPC (Low Density Parity Check) coded modulation symbol decoding using non-Gray code maps for improved performance. Symbol decoding is supported by appropriately modifying an LDPC tripartite graph to eliminate the bit nodes thereby generating an LDPC bipartite graph (such that symbol nodes are appropriately mapped directly to check nodes thereby obviating the bit nodes). The edges that communicatively couple the symbol nodes to the check nodes are labeled appropriately to support symbol decoding of the LDPC coded modulation signal. In addition, the LDPC coded modulation symbol decoding can be employed to decode a signal that has been encoded using LDPC-BICM (Low Density Parity Check-Bit Interleaved Coded Modulation) encoding with non-Gray code mapping. By using the non-Gray code mapping, a performance improvement over such a system using only Gray code mapping may be achieved.
摘要翻译： LDPC（低密度奇偶校验）编码调制符号解码，使用非格雷码图进行改进。通过适当地修改LDPC三部分图来消除比特节点从而生成LDPC二分图（使得符号节点被适当地映射到校验节点从而消除比特节点）来支持符号解码。将符号节点通信地耦合到校验节点的边缘被适当地标记以支持LDPC编码调制信号的符号解码。此外，可以采用LDPC编码调制符号解码来对使用非格雷码映射的LDPC-BICM（低密度奇偶校验位交织编码调制）编码进行编码的信号进行解码。通过使用非格雷码映射，可以实现仅使用格雷码映射的系统的性能改进。

13. 发明授权

US07185270B2 LDPC (low density parity check) coded modulation hybrid decoding 有权
标题翻译： LDPC（低密度奇偶校验）编码调制混合解码
公开(公告)号：US07185270B2
公开(公告)日：2007-02-27
申请号：US10723574
申请日：2003-11-26
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： G06F11/00 , H03M13/00
CPC分类号： H04L1/005 , H03M13/1105 , H03M13/255 , H04L1/0058
摘要： LDPC (Low Density Parity Check) coded modulation hybrid decoding. A novel approach is presented wherein a combination of bit decoding and symbol level decoding (e.g., hybrid decoding) is performed for LDPC coded signals. Check node updating and symbol node updating are successively and alternatively performed on bit edge messages for a predetermined number of decoding iterations or until a sufficient degree of precision is achieved. The symbol node updating of the bit edge messages involves using symbol metrics corresponding to the symbol being decoded as well as the bit edge messages most recently updated by check node updating. The check node updating of the bit edge messages involves using the bit edge messages most recently updated by symbol node updating. The symbol node updating also involves computing possible soft symbol estimates for the symbol during each decoding iteration.
摘要翻译： LDPC（低密度奇偶校验）编码调制混合解码。提出了一种新颖的方法，其中对LDPC编码信号执行比特解码和符号级解码（例如混合解码）的组合。对于预定数量的解码迭代，或直到达到足够的精确度，连续替代地对位边消息执行检查节点更新和符号节点更新。位边消息的符号节点更新涉及使用与被解码的符号相对应的符号度量以及最近由校验节点更新更新的位边消息。位边消息的校验节点更新涉及使用最近通过符号节点更新更新的位边消息。符号节点更新还涉及在每次解码迭代期间计算符号的可能的软符号估计。

14. 发明授权

US07139964B2 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：US07139964B2
公开(公告)日：2006-11-21
申请号：US10669066
申请日：2003-09-23
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. A novel approach is presented for variable modulation encoding of LDPC coded symbols. 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。提出了一种用于LDPC编码符号的可变调制编码的新颖方法。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。

15. 发明授权

US07062700B2 16 QAM and 16 APSK TTCM (Turbo Trellis Coded Modulation) with minimum bandwidth efficiency of 3 bit/s/Hz using a rate 2/4 constituent encoder 有权
标题翻译： 16个QAM和16个APSK TTCM（Turbo Trellis编码调制），最小带宽效率为3位/ s / Hz，使用速率2/4组成编码器
公开(公告)号：US07062700B2
公开(公告)日：2006-06-13
申请号：US10636008
申请日：2003-08-07
申请人： Ba-Zhong Shen , Kelly Brian Cameron , Hau Thien Tran
发明人： Ba-Zhong Shen , Kelly Brian Cameron , Hau Thien Tran
IPC分类号： H03M13/03
CPC分类号： H04L27/3405 , H03M13/258 , H03M13/2957 , H04L1/0003 , H04L1/0009 , H04L1/0041 , H04L1/006 , H04L1/0066 , H04L1/0068 , H04L1/0071 , H04L1/0075 , H04L2001/0097
摘要： 16 QAM (Quadrature Amplitude Modulation) and 16 APSK (Asymmetric Phase Shift Keying) TTCM (Turbo Trellis Coded Modulation) with minimum bandwidth efficiency of 3 bit/s/Hz (bits per second per Hertz) using a rate 2/4 constituent encoder. Various encoder designs are presented that are operable to generate a signal whose modulation may vary as frequently as on a symbol by symbol basis while providing relatively very high throughput. Rate control sequences including RCs (Rate Controls), arranged in a period, govern the manner in which symbols of a signal are generated. The RCs correspond to various modulations that may each have a unique constellation and corresponding mapping. Different RCs may be included within a rate control sequence that correspond to 16 QAM, 16 APSK, QPSK (Quadrature Phase Shift Key), or even other modulation types. In addition, 1 or more uncoded bits may be used to generate the symbols of the coded signal.
摘要翻译：使用速率2/4分量编码器，具有最小带宽效率为3位/ s / Hz（每赫兹每秒赫兹）的TTCM（Turbo网格编码调制）和16 APSK（非对称相移键控）TAPM（非对称相移键控））。提供了各种编码器设计，其可操作以产生其调制可以像逐个符号基础一样频繁地变化的信号，同时提供相对非常高的吞吐量。包括RC（速率控制）在内的速率控制序列被布置在一个周期内，控制信号的符号产生的方式。 RC对应于各自可以具有独特的星座和相应映射的各种调制。不同的RC可以包括在对应于16QAM，16APSK，QPSK（正交相移键））或甚至其它调制类型的速率控制序列中。此外，可以使用1个或多个未编码比特来生成编码信号的符号。

16. 发明授权

US08683288B2 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：US08683288B2
公开(公告)日：2014-03-25
申请号：US13537170
申请日：2012-06-29
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。

17. 发明授权

US08473822B2 True bit level decoding of TTCM (turbo trellis coded modulation) of variable rates and signal constellations 有权
标题翻译：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
申请人： Ba-Zhong Shen , Kelly Brian Cameron , Hau Thien Tran
发明人： Ba-Zhong Shen , Kelly Brian Cameron , Hau Thien Tran
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。

18. 发明授权

US08437362B2 Asymmetrical MIMO wireless communications 失效
标题翻译：不对称MIMO无线通信
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。

19. 发明授权

US08254407B2 Asymmetrical MIMO wireless communications 有权
标题翻译：不对称MIMO无线通信
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。

20. 发明申请

US20120192029A1 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：US20120192029A1
公开(公告)日：2012-07-26
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： H03M13/05 , 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”）。

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