公开(公告)号：US20060067421A1

公开(公告)日：2006-03-30

申请号：US11217818

申请日：2005-09-01

申请人： Jay Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

发明人： Jay Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

IPC分类号： H04L1/02

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）。 发射实体基于发射分集方案（例如，STTD，SFTD或OTD）处理一个或多个（N N D D）个数据符号流，以产生多个（N SUB） ）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。 发送实体可以在具有不同矩阵的N C C个编码符号流上执行空间扩展，以产生用于从N T T发送的多个（N T T T T）个发送符号流， / SUB>天线。 附加地或替代地，发送实体可以在时域或频域中的N T个发送符号流上执行连续波束成形。

公开(公告)号：US20050195733A1

公开(公告)日：2005-09-08

申请号：US10794918

申请日：2004-03-05

申请人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

发明人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

IPC分类号： H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04L27/26 ,  H04J11/00

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. The PRTS mode may be used to achieve transmit diversity or spatial spreading. 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.

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。 PRTS模式可以用于实现发射分集或空间扩展。 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。

公开(公告)号：US20050180312A1

公开(公告)日：2005-08-18

申请号：US10781951

申请日：2004-02-18

申请人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

发明人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

IPC分类号： H04B7/04 ,  H04B7/06 ,  H04J99/00 ,  H04L1/06 ,  H04L25/02 ,  H04L27/26 ,  H04J11/00

CPC分类号： H04B7/0413 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/0695 ,  H04L1/06 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226

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. The PRTS mode may be used to achieve transmit diversity or spatial spreading. For transmit diversity, the transmitting entity uses different pseudo-random steering vectors across the subbands but the same steering vector across an entire 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.

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。 PRTS模式可以用于实现发射分集或空间扩展。 对于发射分集，发射实体在子带上使用不同的伪随机导向矢量，但是在每个子带的整个分组上使用相同的导向矢量。 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。

公开(公告)号：US20050157805A1

公开(公告)日：2005-07-21

申请号：US11009200

申请日：2004-12-09

申请人： Jay Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

发明人： Jay Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

IPC分类号： H04J99/00 ,  H04B7/04 ,  H04B7/06 ,  H04J11/00 ,  H04L1/02

CPC分类号： H04J11/003 ,  C07K2317/22 ,  C07K2317/622 ,  H04B7/0417 ,  H04B7/0626 ,  H04L1/0026 ,  H04L1/06

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。

公开(公告)号：US20050130694A1

公开(公告)日：2005-06-16

申请号：US11049319

申请日：2005-02-01

申请人： Irina Medvedev ,  Jay Walton ,  John Ketchum

发明人： Irina Medvedev ,  Jay Walton ,  John Ketchum

IPC分类号： H04J99/00 ,  H04B7/005 ,  H04B7/04 ,  H04B7/06 ,  H04L1/00 ,  H04L1/06 ,  H04B7/00

CPC分类号： H04B7/0417 ,  H04B7/0619 ,  H04L1/0001 ,  H04L1/06 ,  H04W52/42

摘要： Techniques for controlling the transmit power for a number of data streams in a wireless multi-channel (e.g., MIMO) communication system. In one method, a number of received symbol streams are initially processed in accordance with a particular (e.g., CCMI, CCMI-SC, MMSE, or MMSE-SC) receiver processing technique to provide a number of detected data streams. The post-detection SNRs of the detected data streams are estimated, and each SNR that exceeds a setpoint is identified. This setpoint may correspond to (1) the SNR needed to achieve the maximum allowed spectral efficiency or (2) the target SNR needed to achieve a specified spectral efficiency. A new (or adjusted) transmit power for each detected data stream associated with a post-detection SNR that exceeds the setpoint is determined and used for the data stream. Different power control schemes are provided for different classes of receiver processing techniques with different characteristics.

摘要翻译： 用于在无线多信道（例如，MIMO）通信系统中控制多个数据流的发射功率的技术。 在一种方法中，根据特定（例如，CCMI，CCMI-SC，MMSE或MMSE-SC）接收机处理技术最初处理多个接收到的符号流，以提供多个检测到的数据流。 估计检测到的数据流的检测后SNR，并且识别超过设定点的每个SNR。 该设定点可以对应于（1）实现最大允许频谱效率所需的SNR或（2）实现特定频谱效率所需的目标SNR。 确定与用于超过设定点的检测后SNR相关联的每个检测到的数据流的新（或调整的）发射功率并将其用于数据流。 为不同类型的具有不同特性的接收机处理技术提供不同的功率控制方案。

公开(公告)号：US20050002468A1

公开(公告)日：2005-01-06

申请号：US10903813

申请日：2004-07-29

申请人： Jay Walton ,  Mark Wallace ,  John Ketchum ,  Steven Howard

发明人： Jay Walton ,  Mark Wallace ,  John Ketchum ,  Steven Howard

IPC分类号： H04J99/00 ,  H04B7/06 ,  H04B7/08 ,  H04B7/12 ,  H04L1/00 ,  H04L1/02

CPC分类号： H04B7/0417 ,  H04B7/0626 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0854 ,  H04B7/10 ,  H04B7/12 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0048 ,  H04L1/005 ,  H04L1/0071

摘要： Techniques to “successively” process received signals at a receiver unit in a MIMO system to recover transmitted data, and to “adaptively” process data at a transmitter unit based on channel state information available for the MIMO channel. A successive cancellation receiver processing technique is used to process the received signals and performs a number of iterations to provide decoded data streams. For each iteration, input (e.g., received) signals for the iteration are processed to provide one or more symbol streams. One of the symbol streams is selected and processed to provide a decoded data stream. The interference due to the decoded data stream is approximately removed (i.e., canceled) from the input signals provided to the next iteration. The channel characteristics are estimated and reported back to the transmitter system and used to adjust (i.e., adapt) the processing (e.g., coding, modulation, and so on) of data prior to transmission.

摘要翻译： 在MIMO系统的接收机单元处“接收”处理接收信号以恢复所发送的数据，并且基于可用于MIMO信道的信道状态信息“自适应地”处理发射机单元处的数据的技术。 使用连续的取消接收器处理技术来处理所接收的信号并执行多次迭代以提供解码的数据流。 对于每次迭代，处理用于迭代的输入（例如，接收的）信号以提供一个或多个符号流。 选择并处理符号流中的一个以提供解码的数据流。 从解码的数据流引起的干扰从提供给下一次迭代的输入信号中大致去除（即，取消）。 信道特性被估计并报告给发射机系统，并用于在传输之前调整（即，适应）数据的处理（例如，编码，调制等）。

公开(公告)号：US20100002570A9

公开(公告)日：2010-01-07

申请号：US10794918

申请日：2004-03-05

申请人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

发明人： J. Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard ,  Sanjiv Nanda

IPC分类号： H04J11/00

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. The PRTS mode may be used to achieve transmit diversity or spatial spreading. 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.

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。 PRTS模式可以用于实现发射分集或空间扩展。 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。

公开(公告)号：US20080095282A1

公开(公告)日：2008-04-24

申请号：US11963199

申请日：2007-12-21

申请人： Jay Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

发明人： Jay Walton ,  John Ketchum ,  Mark Wallace ,  Steven 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对应的数据符号块，（2）将数据符号块复用到NS数据符号流上，以在MIMO信道的NS传输信道上传输， （3）用导向矩阵空间扩展NS数据符号流，以及（4）在NS信道的NS个空间信道上的NS本征模或部分CSI传输上空间处理用于全CSI传输的NS扩展符号流。 接收实体（1）通过NR个接收天线获得NR个接收到的符号流，（2）执行全CSI或部分CSI传输的接收机空间处理，以获得NS检测符号流，（3）空间地解扩NS检测符号流， 发送实体使用相同的导向矩阵来获得NS恢复的符号流，以及（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。

公开(公告)号：US20080069015A1

公开(公告)日：2008-03-20

申请号：US11947415

申请日：2007-11-29

申请人： J. Rodney Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

发明人： J. Rodney Walton ,  John Ketchum ,  Mark Wallace ,  Steven Howard

IPC分类号： H04L27/28 ,  H04J1/00 ,  H04J3/00

CPC分类号： H04L5/0048 ,  H04B7/0417 ,  H04B7/0617 ,  H04B7/0626 ,  H04B7/0628 ,  H04B7/0669 ,  H04B7/0697 ,  H04B7/0854 ,  H04B7/0871 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0017 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/006 ,  H04L25/0226 ,  H04L25/0248 ,  H04L25/0256 ,  H04L25/03955 ,  H04L25/03968 ,  H04W16/28 ,  H04W52/50

摘要： A user terminal supports multiple spatial multiplexing (SM) modes such as a steered mode and a non-steered mode. For data transmission, multiple data streams are coded and modulated in accordance with their selected rates to obtain multiple data symbol streams. These streams are then spatially processed in accordance with a selected SM mode (e.g., with a matrix of steering vectors for the steered mode and with the identity matrix for the non-steered mode) to obtain multiple transmit symbol streams for transmission from multiple antennas. For data reception, multiple received symbol streams are spatially processed in accordance with the selected SM mode (e.g., with a matrix of eigenvectors for the steered mode and with a spatial filter matrix for the non-steered mode) to obtain multiple recovered data symbol streams. These streams are demodulated and decoded in accordance with their selected rates to obtain multiple decoded data streams.

摘要翻译： 用户终端支持诸如转向模式和非转向模式的多个空间复用（SM）模式。 对于数据传输，根据所选择的速率对多个数据流进行编码和调制以获得多个数据符号流。 然后根据选定的SM模式（例如，利用用于转向模式的导向矢量矩阵和非导向模式的单位矩阵）对这些流进行空间处理，以获得用于从多个天线发射的多个发射符号流。 对于数据接收，根据所选择的SM模式（例如，利用用于转向模式的特征向量矩阵和用于非转向模式的空间滤波器矩阵）来对多个接收到的符号流进行空间处理，以获得多个恢复的数据符号流 。 这些流根据其选择的速率进行解调和解码，以获得多个解码的数据流。

公开(公告)号：US20080025444A1

公开(公告)日：2008-01-31

申请号：US11869609

申请日：2007-10-09

申请人： J. Walton ,  John Ketchum ,  John Smee ,  Mark Wallace ,  Steven Howard

发明人： J. Walton ,  John Ketchum ,  John Smee ,  Mark Wallace ,  Steven Howard

IPC分类号： H04L1/02

CPC分类号： H04B7/043 ,  H04B1/71072 ,  H04B7/0408 ,  H04B7/0413 ,  H04B7/0421 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0697 ,  H04B17/309 ,  H04L5/023 ,  H04W16/28

摘要： An uplink channel response matrix is obtained for each terminal and decomposed to obtain a steering vector used by the terminal to transmit on the uplink. An “effective” uplink channel response vector is formed for each terminal based on its steering vector and its channel response matrix. Multiple sets of terminals are evaluated based on their effective channel response vectors to determine the best set (e.g., with highest overall throughput) for uplink transmission. Each selected terminal performs spatial processing on its data symbol stream with its steering vector and transmits its spatially processed data symbol stream to an access point. The multiple selected terminals simultaneously transmit their data symbol streams via their respective MIMO channels to the access point. The access point performs receiver spatial processing on its received symbol streams in accordance with a receiver spatial processing technique to recover the data symbol streams transmitted by the selected terminals.