公开(公告)号：US06115427A

公开(公告)日：2000-09-05

申请号：US847635

申请日：1997-04-25

申请人： Arthur Robert Calderbank ,  Ayman F. Naguib ,  Nambirajan Seshadri ,  Vahid Tarokh

发明人： Arthur Robert Calderbank ,  Ayman F. Naguib ,  Nambirajan Seshadri ,  Vahid Tarokh

IPC分类号： H03M13/15 ,  C07K14/78 ,  C12N15/85 ,  H04B7/005 ,  H04B7/06 ,  H04B7/08 ,  H04L1/00 ,  H04L1/06 ,  H04L27/18 ,  H04L27/20 ,  H04B7/02

CPC分类号： H04L1/0625 ,  C07K14/78 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0891 ,  H04L1/0041 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0065 ,  H04L1/0071 ,  H04L1/0618 ,  H04L27/20 ,  A01K2217/075

摘要： A method and apparatus for increasing the data rate and providing antenna diversity using multiple transmit antennas is disclosed. A set of bits of a digital signal are used to generate a codeword. Codewords are provided according to a channel code. Delay elements may be provided in antenna output channels, or with suitable code construction delay may be omitted. n signals represent n symbols of a codeword are transmitted with n different transmit antennas. At the receiver MLSE or other decoding is used to decode the noisy received sequence. The parallel transmission and channel coding enables an increase the data rate over previous techniques, and recovery even under fading conditions. The channel coding may be concatenated with error correction codes under appropriate conditions.

摘要翻译： 公开了一种用于增加数据速率并使用多个发射天线提供天线分集的方法和装置。 使用数字信号的一组位来产生码字。 代码字根据通道代码提供。 可以在天线输出通道中提供延迟元件，或者可以省略适当的代码结构延迟。 n个信号表示用n个不同的发射天线发送码字的n个符号。 在接收机上使用MLSE或其他解码来解码噪声接收序列。 并行传输和信道编码能够提高数据速率与以前的技术相同，即使在衰落条件下也能恢复数据速率。 信道编码可以在适当的条件下与纠错码连接。

公开(公告)号：US08942273B2

公开(公告)日：2015-01-27

申请号：US13613134

申请日：2012-09-13

申请人： Kwang Taik Kim ,  Vahid Tarokh

发明人： Kwang Taik Kim ,  Vahid Tarokh

IPC分类号： H03K11/00 ,  H04L27/34

CPC分类号： H04L27/34

摘要： Provided is a relay node that performs network coding with respect to signals transmitted from a plurality of sources. The relay node may partition a plurality of constellation points into a plurality of subsets, generate a new constellation diagram based on respective characteristics among the plurality of subsets, and perform network coding based on the new constellation diagram.

摘要翻译： 提供了一种对从多个源发送的信号执行网络编码的中继节点。 中继节点可以将多个星座点划分成多个子集，基于多个子集中的相应特征生成新的星座图，并且基于新的星座图执行网络编码。

公开(公告)号：US08612833B2

公开(公告)日：2013-12-17

申请号：US13027438

申请日：2011-02-15

申请人： Kwang Taik Kim ,  Chan Soo Hwang ,  Vahid Tarokh

发明人： Kwang Taik Kim ,  Chan Soo Hwang ,  Vahid Tarokh

IPC分类号： H03M13/00

CPC分类号： H04L1/0076 ,  G06F11/10 ,  H04L1/0047

摘要： Provided are a communication apparatus and method using a matrix network coding scheme. The communication apparatus includes a reception unit to receive a corrupted packet including a plurality of corrupted words, and a controller to estimate a first decoded word corresponding to the corrupted words based on the corrupted words and a generator matrix. The controller generates a second decoded word corresponding to the corrupted words based on a codebook and the estimated first decoded word. The codebook is based on the generator matrix. The controller generates a message based on a plurality of second decoded words respectively corresponding to the plurality of corrupted words.

公开(公告)号：US20130089162A1

公开(公告)日：2013-04-11

申请号：US13691505

申请日：2012-11-30

申请人： Siavash Alamouti ,  Patrick Poon ,  Vahid Tarokh

发明人： Siavash Alamouti ,  Patrick Poon ,  Vahid Tarokh

IPC分类号： H04B1/04 ,  H03M13/25

CPC分类号： H04B7/0697 ,  H03M13/256 ,  H04B1/0475 ,  H04B7/0669 ,  H04L1/0054 ,  H04L1/0057 ,  H04L1/0059 ,  H04L1/006 ,  H04L1/0065 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L25/03178 ,  H04L25/03331

摘要： Good transmission characteristics are achieved in the presence of fading with a transmitter that employs a trellis coder followed by a block coder. Correspondingly, the receiver comprises a Viterbi decoder followed by a block decoder. Advantageously, the block coder and decoder employ time-space diversity coding which, illustratively, employs two transmitter antennas and one receiver antenna.

摘要翻译： 在采用格网编码器后跟块编码器的发射机存在衰落的情况下，实现良好的传输特性。 相应地，接收机包括维特比解码器，随后是块解码器。 有利地，块编码器和解码器采用时间 - 空间分集编码，其示例性地使用两个发射机天线和一个接收机天线。

公开(公告)号：US20120207193A1

公开(公告)日：2012-08-16

申请号：US13397842

申请日：2012-02-16

申请人： Kwang Taik Kim ,  Vahid Tarokh

发明人： Kwang Taik Kim ,  Vahid Tarokh

IPC分类号： H04L25/20

CPC分类号： H04L1/0045 ,  H04L1/0041 ,  H04L2001/0097

摘要： Provided is a physical layer network coding method and apparatus. A relay node determines reliabilities of symbols of nodes, based on a signal received from the plurality of nodes, and generates a transmission signal that maintains reliabilities of symbols that have high reliabilities and excludes components of symbols that have low reliabilities. The relay node generates the transmission signal that reduces an expected power of error, based on the received signal.

摘要翻译： 提供了一种物理层网络编码方法和装置。 中继节点基于从多个节点接收到的信号来确定节点的符号的可靠性，并且生成维持具有高可靠性的符号的可靠性并且排除具有低可靠性的符号的分量的传输信号。 中继节点根据接收到的信号产生减少预期误差功率的发送信号。

公开(公告)号：US20110307765A1

公开(公告)日：2011-12-15

申请号：US13027438

申请日：2011-02-15

申请人： Kwang Taik Kim ,  Chan Soo Hwang ,  Vahid Tarokh

发明人： Kwang Taik Kim ,  Chan Soo Hwang ,  Vahid Tarokh

IPC分类号： H03M13/05 ,  H04B7/216 ,  G06F11/10

CPC分类号： H04L1/0076 ,  G06F11/10 ,  H04L1/0047

摘要： Provided are a communication apparatus and method using a matrix network coding scheme. The communication apparatus includes a reception unit to receive a corrupted packet including a plurality of corrupted words, and a controller to estimate a first decoded word corresponding to the corrupted words based on the corrupted words and a generator matrix. The controller generates a second decoded word corresponding to the corrupted words based on a codebook and the estimated first decoded word. The codebook is based on the generator matrix. The controller generates a message based on a plurality of second decoded words respectively corresponding to the plurality of corrupted words.

摘要翻译： 提供了一种使用矩阵网络编码方案的通信装置和方法。 通信装置包括：接收单元，用于接收包含多个损坏字的损坏分组;以及控制器，用于基于被破坏的单词和生成矩阵来估计与被破坏的单词相对应的第一解码单词。 控制器基于码本和估计的第一解码字生成与损坏的字对应的第二解码字。 码本基于生成矩阵。 控制器基于分别对应于多个损坏的字的多个第二解码字生成消息。

公开(公告)号：US20110170635A1

公开(公告)日：2011-07-14

申请号：US13073369

申请日：2011-03-28

申请人： Siavash Alamouti ,  Vahid Tarokh

发明人： Siavash Alamouti ,  Vahid Tarokh

IPC分类号： H04L27/00

CPC分类号： H04B7/0857 ,  H04B1/02 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0837 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0891 ,  H04B7/12 ,  H04L1/0054 ,  H04L1/04 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/0668 ,  H04L1/08 ,  H04L25/0202

摘要： A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies: Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same space block code with two transmit and two receive antennas.

摘要翻译： 结合仅包括诸如否定和共轭的简单算术运算的编码，创建具有通过多个发送信道发送的符号的简单块编码布置。 发射机产生的分集利用空间分集和时间或频率分集。 通过在多个天线上进行冗余发送来实现空间分集，通过在不同时间进行冗余发送实现时间分集，并且通过以不同频率进行冗余传输来实现频率分集：说明性地，使用两个发射天线和单个接收天线 所公开的实施例提供与最大比率接收机组合（MRRC）方案与一个发射天线和两个接收天线相同的分集增益。 本发明的原理可应用于具有两个以上天线的布置，并且使用具有两个发射天线和两个接收天线的相同空间块码公开了一个说明性实施例。

公开(公告)号：US07916806B2

公开(公告)日：2011-03-29

申请号：US11828790

申请日：2007-07-26

申请人： Siavash Alamouti ,  Vahid Tarokh

发明人： Siavash Alamouti ,  Vahid Tarokh

IPC分类号： H04L27/00

CPC分类号： H04B7/0857 ,  H04B1/02 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0667 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/0689 ,  H04B7/0837 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0891 ,  H04B7/12 ,  H04L1/0054 ,  H04L1/04 ,  H04L1/0606 ,  H04L1/0618 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0643 ,  H04L1/0668 ,  H04L1/08 ,  H04L25/0202

摘要： A simple block coding arrangement is created with symbols transmitted over a plurality of transmit channels, in connection with coding that comprises only simple arithmetic operations, such as negation and conjugation. The diversity created by the transmitter utilizes space diversity and either time or frequency diversity. Space diversity is effected by redundantly transmitting over a plurality of antennas, time diversity is effected by redundantly transmitting at different times, and frequency diversity is effected by redundantly transmitting at different frequencies: Illustratively, using two transmit antennas and a single receive antenna, one of the disclosed embodiments provides the same diversity gain as the maximal-ratio receiver combining (MRRC) scheme with one transmit antenna and two receive antennas. The principles of this invention are applicable to arrangements with more than two antennas, and an illustrative embodiment is disclosed using the same space block code with two transmit and two receive antennas.

摘要翻译： 结合仅包括诸如否定和共轭的简单算术运算的编码，创建具有通过多个发送信道发送的符号的简单块编码布置。 发射机产生的分集利用空间分集和时间或频率分集。 通过在多个天线上进行冗余发送来实现空间分集，通过在不同时间进行冗余发送实现时间分集，并且通过以不同频率进行冗余传输来实现频率分集：说明性地，使用两个发射天线和单个接收天线 所公开的实施例提供与最大比率接收机组合（MRRC）方案与一个发射天线和两个接收天线相同的分集增益。 本发明的原理可应用于具有两个以上天线的布置，并且使用具有两个发射天线和两个接收天线的相同空间块码公开了一个说明性实施例。

公开(公告)号：US07460717B2

公开(公告)日：2008-12-02

申请号：US11838668

申请日：2007-08-14

申请人： Hamid Jafarkhani ,  Vahid Tarokh

发明人： Hamid Jafarkhani ,  Vahid Tarokh

IPC分类号： G06K9/62 ,  G06F15/18 ,  G06F7/00 ,  G06F17/00

CPC分类号： G06K9/6224 ,  Y10S707/99945 ,  Y10S707/99948

摘要： An approach to clustering a set of images based on similarity measures employs a fuzzy clustering paradigm in which each image is represented by a node in a graph. The graph is ultimately partitioned into subgraphs, each of which represent true clusters among which the various images are distributed. The partitioning is performed in a series of stages by identifying one true cluster at each stage, and removing the nodes belonging to each identified true cluster from further consideration so that the remaining, unclustered nodes may then be grouped. At the beginning of each such stage, the nodes that remain to be clustered are treated as all belonging to a single candidate cluster. Nodes are removed from this single candidate cluster in accordance with similarity and connectivity criteria, to arrive at a true cluster. The member nodes of this true cluster are then removed from further consideration, prior to the next stage in the process.

摘要翻译： 基于相似性度量对一组图像进行聚类的方法采用模糊聚类范例，其中每个图像由图中的节点表示。 图形最终被划分为子图，每个子图表示其中分布了各种图像的真实集群。 通过在每个阶段识别一个真实集群，并从进一步的考虑中去除属于每个已识别的真实集群的节点，从而可以对剩余的未分组节点进行分组，从而在一系列阶段执行分区。 在每个这样的阶段的开始，保持被聚集的节点被视为全部属于单个候选集群。 根据相似性和连通性标准，从该单个候选集群中删除节点，以获得真正的集群。 然后，在此过程的下一阶段之前，将此真正集群的成员节点从进一步的考虑中移除。

公开(公告)号：US20070274597A1

公开(公告)日：2007-11-29

申请号：US11838668

申请日：2007-08-14

申请人： HAMID JAFARKHANI ,  Vahid Tarokh

发明人： HAMID JAFARKHANI ,  Vahid Tarokh

IPC分类号： G06K9/64

CPC分类号： G06K9/6224 ,  Y10S707/99945 ,  Y10S707/99948

摘要： An approach to clustering a set of images based on similarity measures employs a fuzzy clustering paradigm in which each image is represented by a node in a graph. The graph is ultimately partitioned into subgraphs, each of which represent true clusters among which the various images are distributed. The partitioning is performed in a series of stages by identifying one true cluster at each stage, and removing the nodes belonging to each identified true cluster from further consideration so that the remaining, unclustered nodes may then be grouped. At the beginning of each such stage, the nodes that remain to be clustered are treated as all belonging to a single candidate cluster. Nodes are removed from this single candidate cluster in accordance with similarity and connectivity criteria, to arrive at a true cluster. The member nodes of this true cluster are then removed from further consideration, prior to the next stage in the process.

摘要翻译： 基于相似性度量对一组图像进行聚类的方法采用模糊聚类范例，其中每个图像由图中的节点表示。 图形最终被划分为子图，每个子图表示其中分布了各种图像的真实集群。 通过在每个阶段识别一个真实集群，并从进一步的考虑中去除属于每个已识别的真实集群的节点，从而可以对剩余的未分组节点进行分组，从而在一系列阶段执行分区。 在每个这样的阶段的开始，保持被聚集的节点被视为全部属于单个候选集群。 根据相似性和连通性标准，从该单个候选集群中删除节点，以获得真正的集群。 然后，在此过程的下一阶段之前，将此真正集群的成员节点从进一步的考虑中移除。