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1. 发明授权

US08520498B2 Transmit diversity and spatial spreading for an OFDM-based multi-antenna communication system 失效
标题翻译：基于OFDM的多天线通信系统的发射分集和空间扩展
公开(公告)号：US08520498B2
公开(公告)日：2013-08-27
申请号：US13461707
申请日：2012-05-01
申请人： Jay Rodney Walton , John Wendell Ketchum , Mark S. Wallace , Steven J. Howard , Sanjiv Nanda
发明人： Jay Rodney Walton , John Wendell Ketchum , Mark S. Wallace , Steven J. Howard , Sanjiv Nanda
IPC分类号： H04J11/10
CPC分类号： H04B7/0615 , H04B7/0413 , H04L27/2602
摘要： A multi-antenna transmitting entity transmits data to a single- or multi-antenna receiving entity using (1) a steered mode to direct the data transmission toward the receiving entity or (2) a pseudo-random transmit steering (PRTS) mode to randomize the effective channels observed by the data transmission across the subbands. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across a packet for each subband. The receiving entity does not need to have knowledge of the pseudo-random steering vectors or perform any special processing. For spatial spreading, the transmitting entity uses different pseudo-random steering vectors across the subbands and different steering vectors across the packet for each subband. Only the transmitting and receiving entities know the steering vectors used for data transmission. Other aspects, embodiments, and features are also claimed and disclosed.
摘要翻译：多天线发射实体使用（1）向接收实体指导数据传输的导向模式或（2）伪随机发射转向（PRTS）模式来将数据发送到单天线或多天线接收实体，以随机化通过子带上的数据传输观察到的有效信道。对于发射分集，发射实体在子带上使用不同的伪随机导引向量，但是在每个子带的分组上使用相同的导向向量。接收实体不需要具有伪随机导引向量的知识或执行任何特殊处理。对于空间扩展，发射实体在子带上使用不同的伪随机导引向量，并且跨每个子带的分组使用不同的导向矢量。只有发送和接收实体知道用于数据传输的导向向量。还要求和公开其他方面，实施例和特征。

2. 发明授权

US08284752B2 Method, apparatus, and system for medium access control 有权
标题翻译：用于媒体访问控制的方法，装置和系统
公开(公告)号：US08284752B2
公开(公告)日：2012-10-09
申请号：US10964332
申请日：2004-10-13
申请人： John W. Ketchum , Mark S. Wallace , Jay Rodney Walton , Sanjiv Nanda
发明人： John W. Ketchum , Mark S. Wallace , Jay Rodney Walton , Sanjiv Nanda
IPC分类号： H04J3/24 , H04J3/16
CPC分类号： H04L29/06 , H04L69/32 , H04L69/324 , H04L69/325
摘要： Embodiments addressing MAC processing for efficient use of high throughput systems are disclosed. In one aspect, an apparatus comprises a first layer for receiving one or more packets from one or more data flows and for generating one or more first layer Protocol Data Units (PDUs) from the one or more packets. In another aspect, a second layer is deployed for generating one or more MAC frames based on the one or more MAC layer PDUs. In another aspect, a MAC frame is deployed for transmitting one or more MAC layer PDUs. The MAC frame may comprise a control channel for transmitting one or more allocations. The MAC frame may comprise one or more traffic segments in accordance with allocations.
摘要翻译：公开了解决用于高吞吐量系统的有效使用的MAC处理的实施例。在一个方面，一种装置包括用于从一个或多个数据流接收一个或多个分组并用于从所述一个或多个分组生成一个或多个第一层协议数据单元（PDU）的第一层。在另一方面，第二层被部署用于基于一个或多个MAC层PDU生成一个或多个MAC帧。在另一方面，部署MAC帧以发送一个或多个MAC层PDU。 MAC帧可以包括用于发送一个或多个分配的控制信道。 MAC帧可以包括根据分配的一个或多个业务段。

3. 发明授权

US08909174B2 Continuous beamforming for a MIMO-OFDM system 有权
标题翻译：用于MIMO-OFDM系统的连续波束成形
公开(公告)号：US08909174B2
公开(公告)日：2014-12-09
申请号：US12533765
申请日：2009-07-31
申请人： Steven J. Howard , Jay Rodney Walton , Mark S. Wallace
发明人： Steven J. Howard , Jay Rodney Walton , Mark S. Wallace
IPC分类号： H04B7/02 , H04B7/06 , H04B7/04
CPC分类号： H04B7/0617 , H04B7/0408 , H04B7/0417 , H04B7/0626 , H04B7/0671
摘要： A transmitting entity performs spatial processing on data symbols for each subband with an eigenmode matrix, a steering matrix, or an identity matrix to obtain spatially processed symbols for the subband. The data symbols may be sent on orthogonal spatial channels with the eigenmode matrix, on different spatial channels with the steering matrix, or from different transmit antennas with the identity matrix. The transmitting entity further performs beamforming on the spatially processed symbols, in the frequency domain or time domain, prior to transmission from the multiple transmit antennas. A receiving entity performs the complementary processing to recover the data symbols sent by the transmitting entity. The receiving entity may derive a spatial filter matrix for each subband based on a MIMO channel response matrix for that subband and perform receiver spatial processing for the subband with the spatial filter matrix.
摘要翻译：发送实体对具有本征模式矩阵，导向矩阵或单位矩阵的每个子带的数据符号执行空间处理，以获得子带的空间处理符号。数据符号可以在具有本征模式矩阵的正交空间信道上，在具有导引矩阵的不同空间信道上，或者从具有单位矩阵的不同发射天线发送。在从多个发射天线的发射之前，发射实体在频域或时域中进一步对空间处理的符号执行波束成形。接收实体执行补充处理以恢复由发送实体发送的数据符号。接收实体可以基于该子带的MIMO信道响应矩阵为每个子带导出空间滤波器矩阵，并且对于具有空间滤波器矩阵的子带执行接收机空间处理。

4. 发明授权

US08711763B2 Random access for wireless multiple-access communication systems 有权
标题翻译：无线多址通信系统的随机接入
公开(公告)号：US08711763B2
公开(公告)日：2014-04-29
申请号：US13353924
申请日：2012-01-19
申请人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
发明人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04W72/00 , H04W74/08 , H04W74/00 , H04W88/06
CPC分类号： H04W74/0833 , H04B7/0413 , H04B7/043 , H04B7/0669 , H04B7/0697 , H04B7/0854 , H04L1/0001 , H04L1/0009 , H04L1/0017 , H04L1/0059 , H04L1/0061 , H04L1/0068 , H04L1/0071 , H04L1/0618 , H04L1/08 , H04L1/16 , H04L25/0224 , H04L25/0226 , H04L25/0242 , H04L25/03343 , H04L27/2601 , H04L27/2602 , H04L27/261 , H04L27/2647 , H04L2001/0093 , H04W28/20 , H04W52/50 , H04W74/002 , H04W74/08 , H04W74/0866 , H04W88/06
摘要： Techniques for facilitating random access in wireless multiple-access communication systems are described. A random access channel (RACH) is defined to comprise a “fast” RACH (F-RACH) and a “slow” RACH (S-RACH). The F-RACH and S-RACH can efficiently support user terminals in different operating states and employ different designs. The F-RACH can be used to quickly access the system, and the S-RACH is more robust and can support user terminals in various operating states and conditions. The F-RACH may be used by user terminals that have registered with the system and can compensate for their round trip delays (RTDs) by properly advancing their transmit timing. The S-RACH may be used by user terminals that may or may not have registered with the system, and may or may not be able to compensate for their RTDs. Other aspects, embodiments, and features are also claimed and described.
摘要翻译：描述了用于促进无线多址通信系统中的随机接入的技术。随机接入信道（RACH）被定义为包括“快速”RACH（F-RACH）和“慢”RACH（S-RACH）。 F-RACH和S-RACH可以有效地支持不同操作状态的用户终端，并采用不同的设计。 F-RACH可以用于快速访问系统，而S-RACH更加强大，可以支持各种操作状态和条件下的用户终端。 F-RACH可以由已经向系统注册的用户终端使用，并且可以通过适当地提前发送定时来补偿它们的往返延迟（RTD）。 S-RACH可以由可能已经或可能没有在系统中注册的用户终端使用，并且可以或可能不能够补偿它们的RTD。还要求和描述其它方面，实施例和特征。

5. 发明授权

US07895254B2 Eigenvalue decomposition and singular value decomposition of matrices using Jacobi rotation 有权
标题翻译：使用Jacobi旋转的矩阵的特征值分解和奇异值分解
公开(公告)号：US07895254B2
公开(公告)日：2011-02-22
申请号：US11280596
申请日：2005-11-15
申请人： John W. Ketchum , Jay Rodney Walton , Mark S. Wallace , Steven J. Howard , Hakan Inanoglu
发明人： John W. Ketchum , Jay Rodney Walton , Mark S. Wallace , Steven J. Howard , Hakan Inanoglu
IPC分类号： G06F7/32
CPC分类号： G06F17/16 , H04L25/0208 , H04L25/0246 , H04L25/0248
摘要： Techniques for decomposing matrices using Jacobi rotation are described. Multiple iterations of Jacobi rotation are performed on a first matrix of complex values with multiple Jacobi rotation matrices of complex values to zero out the off-diagonal elements in the first matrix. For each iteration, a submatrix may be formed based on the first matrix and decomposed to obtain eigenvectors for the submatrix, and a Jacobi rotation matrix may be formed with the eigenvectors and used to update the first matrix. A second matrix of complex values, which contains orthogonal vectors, is derived based on the Jacobi rotation matrices. For eigenvalue decomposition, a third matrix of eigenvalues may be derived based on the Jacobi rotation matrices. For singular value decomposition, a fourth matrix with left singular vectors and a matrix of singular values may be derived based on the Jacobi rotation matrices.
摘要翻译：描述了使用雅可比旋转分解矩阵的技术。对具有复数值的多个Jacobi旋转矩阵的复数值的第一矩阵执行Jacobi旋转的多次迭代，以将第一矩阵中的非对角线元素归零。对于每次迭代，可以基于第一矩阵形成子矩阵并分解以获得子矩阵的特征向量，并且可以与特征向量形成雅可比旋转矩阵并用于更新第一矩阵。基于Jacobi旋转矩阵导出包含正交向量的第二个复数值矩阵。对于特征值分解，可以基于Jacobi旋转矩阵导出特征值的第三矩阵。对于奇异值分解，可以基于雅可比旋转矩阵导出具有左奇异矢量的第四矩阵和奇异值矩阵。

6. 发明申请

US20100169396A1 EFFICIENT COMPUTATION FOR EIGENVALUE DECOMPOSITION AND SINGULAR VALUE DECOMPOSITION OF MATRICES 审中-公开
标题翻译：特征值分解和矩阵的单值分解的有效计算
公开(公告)号：US20100169396A1
公开(公告)日：2010-07-01
申请号：US12720017
申请日：2010-03-09
申请人： Steven J. Howard , John W. Ketchum , Mark S. Wallace , Jay Rodney Walton
发明人： Steven J. Howard , John W. Ketchum , Mark S. Wallace , Jay Rodney Walton
IPC分类号： G06F17/16 , G06F7/487
CPC分类号： G06F17/16 , H04B7/0413 , H04B7/0617 , H04L25/0208 , H04L25/0248 , H04L27/2647
摘要： For eigenvalue decomposition, a first set of at least one variable is derived based on a first matrix being decomposed and using Coordinate Rotational Digital Computer (CORDIC) computation. A second set of at least one variable is derived based on the first matrix and using a look-up table. A second matrix of eigenvectors of the first matrix is then derived based on the first and second variable sets. To derive the first variable set, CORDIC computation is performed on an element of the first matrix to determine the magnitude and phase of this element, and CORDIC computation is performed on the phase to determine the sine and cosine of this element. To derive the second variable set, intermediate quantities are derived based on the first matrix and used to access the look-up table.
摘要翻译：对于特征值分解，基于正在分解的第一矩阵并使用坐标旋转数字计算机（CORDIC）计算来导出至少一个变量的第一组。基于第一矩阵并使用查找表导出第二组至少一个变量。然后基于第一和第二变量集导出第一矩阵的特征向量的第二矩阵。为了导出第一变量集，对第一矩阵的元素执行CORDIC计算，以确定该元素的幅度和相位，并且在相位上执行CORDIC计算以确定该元素的正弦和余弦。为了导出第二变量集，基于第一矩阵导出中间量并用于访问查找表。

7. 发明授权

US07711762B2 Efficient computation for eigenvalue decomposition and singular value decomposition of matrices 有权
标题翻译：矩阵特征值分解和奇异值分解的有效计算
公开(公告)号：US07711762B2
公开(公告)日：2010-05-04
申请号：US11096839
申请日：2005-03-31
申请人： Steven J. Howard , John W. Ketchum , Mark S. Wallace , Jay Rodney Walton
发明人： Steven J. Howard , John W. Ketchum , Mark S. Wallace , Jay Rodney Walton
IPC分类号： G06F17/16
CPC分类号： G06F17/16 , H04B7/0413 , H04B7/0617 , H04L25/0208 , H04L25/0248 , H04L27/2647
摘要： For eigenvalue decomposition, a first set of at least one variable is derived based on a first matrix being decomposed and using Coordinate Rotational Digital Computer (CORDIC) computation. A second set of at least one variable is derived based on the first matrix and using a look-up table. A second matrix of eigenvectors of the first matrix is then derived based on the first and second variable sets. To derive the first variable set, CORDIC computation is performed on an element of the first matrix to determine the magnitude and phase of this element, and CORDIC computation is performed on the phase to determine the sine and cosine of this element. To derive the second variable set, intermediate quantities are derived based on the first matrix and used to access the look-up table.
摘要翻译：对于特征值分解，基于正在分解的第一矩阵并使用坐标旋转数字计算机（CORDIC）计算来导出至少一个变量的第一组。基于第一矩阵并使用查找表导出第二组至少一个变量。然后基于第一和第二变量集导出第一矩阵的特征向量的第二矩阵。为了导出第一变量集，对第一矩阵的元素执行CORDIC计算，以确定该元素的幅度和相位，并且在相位上执行CORDIC计算以确定该元素的正弦和余弦。为了导出第二变量集，基于第一矩阵导出中间量并用于访问查找表。

8. 发明授权

US07302009B2 Broadcast transmission with spatial spreading in a multi-antenna communication system 有权
标题翻译：在多天线通信系统中具有空间扩展的广播传输
公开(公告)号：US07302009B2
公开(公告)日：2007-11-27
申请号：US11009824
申请日：2004-12-09
申请人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
发明人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04B7/02
CPC分类号： H04L25/03866 , H04B7/043 , H04B7/0615 , H04B7/0669 , H04B7/0678 , H04B7/068 , H04B7/12 , H04L5/0007 , H04L25/0204 , H04L25/0224 , H04W52/42
摘要： An access point in a multi-antenna system broadcasts data using spatial spreading to randomize an “effective” channel observed by each user terminal for each block of data symbols broadcast by the access point. At the access point, data is coded, interleaved, and modulated to obtain ND data symbol blocks to be broadcast in NM transmission spans, where ND≧1 and NM>1. The ND data symbol blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and broadcast via NT transmit antennas and in one transmission span to user terminals within a broadcast coverage area.
摘要翻译：多天线系统中的接入点使用空间扩展广播数据，以随机化由接入点广播的每个数据符号块由每个用户终端观察到的“有效”信道。在接入点，对数据进行编码，交织和调制，以获得要在N N个传输跨度中广播的N个D个数据符号块，其中N < / SUB >> = 1和N＆lt; 1＆gt; 1。 N N个数据符号块被划分为N个M个数据符号子块，每个传输跨度的一个子块。对于每个子块，选择导向矩阵（例如，从一组L个导引矩阵中以确定性或伪随机方式）。利用为该子块选择的导引矩阵来对每个数据符号子块进行空间处理，以获得进一步处理并通过N T T个发射天线广播的传输符号，并且在一个传输范围内广播覆盖范围内的用户终端区。

9. 发明授权

US08204149B2 Spatial spreading in a multi-antenna communication system 有权
标题翻译：多天线通信系统中的空间扩展
公开(公告)号：US08204149B2
公开(公告)日：2012-06-19
申请号：US11008865
申请日：2004-12-09
申请人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
发明人： Jay Rodney Walton , Lizhong Zheng , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04L27/26 , H04B7/06
CPC分类号： H04B7/0417 , H04B7/0456 , H04B7/0669 , H04B17/336 , H04L1/06
摘要： Spatial spreading is performed in a multi-antenna system to randomize an “effective” channel observed by a receiving entity for each transmitted data symbol block. For a MIMO system, at a transmitting entity, data is processed (e.g., encoded, interleaved, and modulated) to obtain ND data symbol blocks to be transmitted in NM transmission spans, where ND≧1 and NM>1. The ND blocks are partitioned into NM data symbol subblocks, one subblock for each transmission span. A steering matrix is selected (e.g., in a deterministic or pseudo-random manner from among a set of L steering matrices, where L>1) for each subblock. Each data symbol subblock is spatially processed with the steering matrix selected for that subblock to obtain transmit symbols, which are further processed and transmitted via NT transmit antennas in one transmission span. The ND data symbol blocks are thus spatially processed with NM steering matrices and observe an ensemble of channels.
摘要翻译：在多天线系统中执行空间扩展，以随机化接收实体针对每个发送的数据符号块观察到的“有效”信道。对于MIMO系统，在发送实体处理（例如，编码，交织和调制）数据，以获得将以NM≥1和NM> 1的NM传输跨度发送的ND数据符号块。 ND块被划分为NM数据符号子块，每个传输跨度的一个子块。对于每个子块，选择导向矩阵（例如，以确定性或伪随机方式从一组L个导引矩阵中，其中L> 1）。每个数据符号子块用为该子块选择的导引矩阵进行空间处理，以获得在一个传输范围内经由NT个发射天线进一步处理和传输的发射符号。因此，ND数据符号块用NM导引矩阵进行空间处理，并观察信道的集合。

10. 发明授权

US07894548B2 Spatial spreading with space-time and space-frequency transmit diversity schemes for a wireless communication system 有权
标题翻译：用于无线通信系统的空时和空频发射分集方案的空间扩展
公开(公告)号：US07894548B2
公开(公告)日：2011-02-22
申请号：US11217818
申请日：2005-09-01
申请人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
发明人： Jay Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04L27/04
CPC分类号： H04L1/0668 , H04B7/0615 , H04B7/0617 , H04B7/0667 , H04B7/0678 , H04B7/068 , H04B7/0689 , H04B7/0697 , H04B7/12 , H04J13/004 , H04L1/0041 , H04L1/0606 , H04L1/0625 , H04L1/0637 , H04L5/0023 , H04L27/2626
摘要： Techniques for transmitting data using a combination of transmit diversity schemes are described. These transmit diversity schemes include spatial spreading, continuous beamforming, cyclic delay diversity, space-time transmit diversity (STTD), space-frequency transmit diversity (SFTD), and orthogonal transmit diversity (OTD). A transmitting entity processes one or more (ND) data symbol streams based on a transmit diversity scheme (e.g., STTD, SFTD, or OTD) to generate multiple (NC) coded symbol streams. Each data symbol stream may be sent as a single coded symbol stream or as multiple (e.g., two) coded symbol streams using STTD, SFTD, or OTD. The transmitting entity may perform spatial spreading on the NC coded symbol streams with different matrices to generate multiple (NT) transmit symbol streams for transmission from NT antennas. Additionally or alternatively, the transmitting entity may perform continuous beamforming on the NT transmit symbol streams in either the time domain or the frequency domain.
摘要翻译：描述了使用发射分集方案的组合来发送数据的技术。这些发射分集方案包括空间扩展，连续波束成形，循环延迟分集，时空发射分集（STTD），空频发射分集（SFTD）和正交发射分集（OTD）。发送实体基于发射分集方案（例如，STTD，SFTD或OTD）处理一个或多个（ND）数据符号流，以生成多个（NC）编码符号流。每个数据符号流可以作为单个编码符号流或使用STTD，SFTD或OTD作为多个（例如，两个）编码符号流发送。发送实体可以对具有不同矩阵的NC编码符号流执行空间扩展，以生成用于从NT个天线发送的多个（NT）个发送符号流。附加地或替代地，发射实体可以在时域或频域中的NT个发射符号流上执行连续波束成形。

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