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61. 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。

62. 发明授权

US08488706B2 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 有权
标题翻译：用于在使用选择性信道反演的多信道通信系统中处理用于传输的数据的方法和装置
公开(公告)号：US08488706B2
公开(公告)日：2013-07-16
申请号：US12559318
申请日：2009-09-14
申请人： John W. Ketchum , Steven J. Howard , Jay Rod Walton , Mark S. Wallace , Fuyun Ling
发明人： John W. Ketchum , Steven J. Howard , Jay Rod Walton , Mark S. Wallace , Fuyun Ling
IPC分类号： H04B7/02
CPC分类号： H04W52/346 , H04L1/0009 , H04L1/0068 , H04L1/06 , H04L5/0023 , H04L5/0037 , H04L5/0046 , H04L5/006 , H04L5/06 , H04L25/03343 , H04L2001/0096 , H04W52/24 , H04W52/42
摘要： Techniques to process data for transmission over a set of transmission channels selected from among all available transmission channels. In an aspect, the data processing includes coding data based on a common coding and modulation scheme to provide modulation symbols and pre-weighting the modulation symbols for each selected channel based on the channel's characteristics. The pre-weighting may be achieved by “inverting” the selected channels so that the received SNRs are approximately similar for all selected channels. With selective channel inversion, only channels having SNRs at or above a particular threshold are selected, “bad” channels are not used, and the total available transmit power is distributed across only “good” channels. Improved performance is achieved due to the combined benefits of using only the NS best channels and matching the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme.
摘要翻译：用于处理数据以在从所有可用传输信道中选择的一组传输信道上进行传输的技术。在一方面，数据处理包括基于公共编码和调制方案的编码数据，以提供调制符号并且基于该信道的特征对每个所选择的信道预先加权调制符号。预加权可以通过“反转”所选择的信道来实现，使得接收的SNR对于所有选择的信道大致相似。通过选择性信道反转，仅选择具有等于或高于特定阈值的SNR的信道，不使用“坏”信道，并且总可用发射功率仅在“良好”信道上分布。由于仅使用NS最佳通道并将每个所选信道的接收SNR与所选择的编码和调制方案所需的SNR相匹配的优点，可以实现改进的性能。

63. 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。

64. 发明授权

US08040965B2 Method and apparatus for processing data for transmission in a multi-channel communication system using selective channel inversion 有权
标题翻译：用于在使用选择性信道反演的多信道通信系统中处理用于传输的数据的方法和装置
公开(公告)号：US08040965B2
公开(公告)日：2011-10-18
申请号：US12499951
申请日：2009-07-09
申请人： John W. Ketchum , Steven J. Howard , Jay Rod Walton , Mark S. Wallace , Fuyun Ling
发明人： John W. Ketchum , Steven J. Howard , Jay Rod Walton , Mark S. Wallace , Fuyun Ling
IPC分类号： H04L27/28
CPC分类号： H04W52/346 , H04L1/0009 , H04L1/0068 , H04L1/06 , H04L5/0023 , H04L5/0037 , H04L5/0046 , H04L5/006 , H04L5/06 , H04L25/03343 , H04L2001/0096 , H04W52/24 , H04W52/42
摘要： Techniques to process data for transmission over a set of transmission channels selected from among all available transmission channels. In an aspect, the data processing includes coding data based on a common coding and modulation scheme to provide modulation symbols and pre-weighting the modulation symbols for each selected channel based on the channel's characteristics. The pre-weighting may be achieved by “inverting” the selected channels so that the received SNRs are approximately similar for all selected channels. With selective channel inversion, only channels having SNRs at or above a particular threshold are selected, “bad” channels are not used, and the total available transmit power is distributed across only “good” channels. Improved performance is achieved due to the combined benefits of using only the NS best channels and matching the received SNR of each selected channel to the SNR required by the selected coding and modulation scheme.
摘要翻译：用于处理数据以在从所有可用传输信道中选择的一组传输信道上进行传输的技术。在一方面，数据处理包括基于公共编码和调制方案的编码数据，以提供调制符号并且基于该信道的特征对每个所选择的信道预先加权调制符号。预加权可以通过“反转”所选择的信道来实现，使得接收的SNR对于所有选择的信道大致相似。通过选择性信道反转，仅选择具有等于或高于特定阈值的SNR的信道，不使用“坏”信道，并且总可用发射功率仅在“良好”信道上分布。由于仅使用NS最佳通道并将每个所选信道的接收SNR与所选择的编码和调制方案所需的SNR相匹配的优点，可以实现改进的性能。

65. 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。

66. 发明授权

US07336746B2 Data transmission with spatial spreading in a MIMO communication system 有权
标题翻译：在MIMO通信系统中具有空间扩展的数据传输
公开(公告)号：US07336746B2
公开(公告)日：2008-02-26
申请号：US11683736
申请日：2007-03-08
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： H04B7/10
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0678 , H04L1/0002 , H04L1/0003 , H04L1/0009 , H04L5/0023 , H04L25/0224
摘要： For data transmission with spatial spreading, a transmitting entity (1) encodes and modulates each data packet to obtain a corresponding data symbol block, (2) multiplexes data symbol blocks onto NS data symbol streams for transmission on NS transmission channels of a MIMO channel, (3) spatially spreads the NS data symbol streams with steering matrices, and (4) spatially processes NS spread symbol streams for full-CSI transmission on NS eigenmodes or partial-CSI transmission on NS spatial channels of the MIMO channel. A receiving entity (1) obtains NR received symbol streams via NR receive antennas, (2) performs receiver spatial processing for full-CSI or partial-CSI transmission to obtain NS detected symbol streams, (3) spatially despreads the NS detected symbol streams with the same steering matrices used by the transmitting entity to obtain NS recovered symbol streams, and (4) demodulates and decodes each recovered symbol block to obtain a corresponding decoded data packet.
摘要翻译：对于具有空间扩展的数据传输，发送实体（1）对每个数据分组进行编码和调制，以获得相应的数据符号块，（2）将数据符号块复用到N个S / S数据符号流上以便传输（3）用导向矩阵空间扩展N S S个数据符号流，并且（4）空间地处理N S S个数据符号流， / SUB>扩展符号流，用于N信道本征模式上的全CSI传输或MIMO信道的N SUB空间信道上的部分CSI传输。接收实体（1）通过N个N个接收天线获得接收到的N N个符号流，（2）执行用于全CSI或部分CSI传输的接收机空间处理，以获得（3）使用发送实体使用的相同导向矩阵空间地解扩N N S S个检测到的符号流，以获得N N个S＆lt; S＆lt; S＆lt; （4）对每个恢复的符号块进行解调和解码以获得对应的解码数据分组。

67. 发明授权

US07110463B2 Efficient computation of spatial filter matrices for steering transmit diversity in a MIMO communication system 有权
标题翻译：用于在MIMO通信系统中用于指导发射分集的空间滤波器矩阵的有效计算
公开(公告)号：US07110463B2
公开(公告)日：2006-09-19
申请号：US10882491
申请日：2004-06-30
申请人： Mark S. Wallace , Jay Rodney Walton , Steven J. Howard
发明人： Mark S. Wallace , Jay Rodney Walton , Steven J. Howard
IPC分类号： H04B7/02
CPC分类号： H04B7/0417 , H04B7/0626 , H04B7/0697 , H04B7/0854
摘要： Techniques for efficiently computing spatial filter matrices are described. The channel response matrices for a MIMO channel may be highly correlated if the channel is relatively static over a range of transmission spans. In this case, an initial spatial filter matrix may be derived based on one channel response matrix, and a spatial filter matrix for each transmission span may be computed based on the initial spatial filter matrix and a steering matrix used for that transmission span. The channel response matrices may be partially correlated if the MIMO channel is not static but does not change abruptly. In this case, a spatial filter matrix may be derived for one transmission span l and used to derive an initial spatial filter matrix for another transmission span m. A spatial filter matrix for transmission span m may be computed based on the initial spatial filter matrix, e.g., using an iterative procedure.
摘要翻译：描述了有效计算空间滤波器矩阵的技术。如果信道在传输跨度的范围内是相对静态的，则用于MIMO信道的信道响应矩阵可以是高度相关的。在这种情况下，可以基于一个信道响应矩阵导出初始空间滤波器矩阵，并且可以基于初始空间滤波器矩阵和用于该传输跨度的导引矩阵来计算每个传输跨度的空间滤波器矩阵。如果MIMO信道不是静态的但是不突然改变，则信道响应矩阵可以是部分相关的。在这种情况下，可以为一个传输跨度l导出空间滤波器矩阵，并且用于导出用于另一个传输跨度m的初始空间滤波器矩阵。可以基于初始空间滤波器矩阵来计算用于传输跨度m的空间滤波器矩阵，例如使用迭代过程。

68. 发明授权

US06256301B1 Reservation multiple access 有权
标题翻译：预约多次访问
公开(公告)号：US06256301B1
公开(公告)日：2001-07-03
申请号：US09173572
申请日：1998-10-15
申请人： Edward G. Tiedemann, Jr. , Steven J. Howard , Rod Walton , Mark S. Wallace
发明人： Edward G. Tiedemann, Jr. , Steven J. Howard , Rod Walton , Mark S. Wallace
IPC分类号： H04L7216
CPC分类号： H04W74/002 , H04W74/0866
摘要： A mobile station accesses a base station by randomly selecting a first reverse link common control channel from a set of random access channels. The mobile station transmits a request portion of an access probe over the first reverse link common control channel. The request portion is subject to collision with other signals. The request portion comprises a hash identification which is derived from a uniquely identifying number using a hash function. The hash identification quasi-uniquely identifies the mobile station. The mobile station receives a channel assignment message from the base station designating the hash identification and a reserved access channel. The reserved access channel provides communication with a low probability of contention. The mobile station transmits a message portion of the access probe over the reserved access channel.
摘要翻译：移动站通过从一组随机接入信道中随机选择第一反向链路公共控制信道来访问基站。移动站通过第一反向链路公共控制信道发送接入探测的请求部分。请求部分与其他信号发生冲突。请求部分包括使用散列函数从唯一标识号导出的散列识别。散列识别准唯一地识别移动台。移动站从指定散列识别的基站和预留接入信道接收信道分配消息。保留的接入信道提供低竞争概率的通信。移动台通过保留的接入信道发送接入探测的消息部分。

69. 发明授权

US08923785B2 Continuous beamforming for a MIMO-OFDM system 有权
公开(公告)号：US08923785B2
公开(公告)日：2014-12-30
申请号：US11050897
申请日：2005-02-03
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.

70. 发明授权

US08543070B2 Reduced complexity beam-steered MIMO OFDM system 有权
标题翻译：降低复杂度的波束控制MIMO OFDM系统
公开(公告)号：US08543070B2
公开(公告)日：2013-09-24
申请号：US11481705
申请日：2006-07-05
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： H03C7/02 , H04M1/00 , H04B1/00 , H04B7/208 , H04B15/00
CPC分类号： H04B7/0421 , H04B7/0634 , H04B7/0639 , H04B7/066 , H04L5/0023 , H04L5/0048 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802
摘要： Techniques for transmitting data using channel information for a subset of all subcarriers used for data transmission are described. A transmitter station receives channel information for at least one subcarrier that is a subset of multiple subcarriers used for data transmission. The channel information may include at least one transmit steering matrix, at least one set of eigenvectors, at least one channel response matrix, at least one channel covariance matrix, an unsteered pilot, or a steered pilot for the at least one subcarrier. The transmitter station obtains at least one transmit steering matrix for the at least one subcarrier from the channel information and determines a transmit steering matrix for each of the multiple subcarriers. The transmitter station performs transmit steering or beam-steering for each of the multiple subcarriers with the transmit steering matrix for that subcarrier.
摘要翻译：描述了使用用于数据传输的所有子载波的子集的信道信息来发送数据的技术。发射机站接收作为用于数据传输的多个子载波的子集的至少一个子载波的信道信息。信道信息可以包括至少一个发射导向矩阵，至少一组特征向量，至少一个信道响应矩阵，至少一个信道协方差矩阵，非导向导频或用于所述至少一个子载波的导频导频。发射机站从信道信息中获取至少一个子载波的至少一个发射导向矩阵，并确定多个子载波中的每一个的发射导向矩阵。发射台使用该子载波的发射导向矩阵对多个子载波中的每一个进行发射导向或波束导向。

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