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91. 发明申请

US20110142097A1 DATA TRANSMISSION WITH SPATIAL SPREADING IN A MIMO COMMUNICATION SYSTEM 有权
标题翻译：数据传输与MIMO通信系统中的空间传播
公开(公告)号：US20110142097A1
公开(公告)日：2011-06-16
申请号：US12815870
申请日：2010-06-15
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： H04B1/707
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。

92. 发明授权

US07895503B2 Sphere detection and rate selection for a MIMO transmission 有权
标题翻译：用于MIMO传输的球体检测和速率选择
公开(公告)号：US07895503B2
公开(公告)日：2011-02-22
申请号：US11349367
申请日：2006-02-06
申请人： Jay Rodney Walton , Mark S. Wallace , Steven J. Howard
发明人： Jay Rodney Walton , Mark S. Wallace , Steven J. Howard
IPC分类号： H03M13/00
CPC分类号： H04L1/06 , H04L1/0631 , H04L25/03242 , H04L25/03292
摘要： Techniques for performing sphere detection to recover data symbols sent in a MIMO transmission are described. In an aspect, sphere detection is performed for data symbols generated with at least two modulation schemes. In another aspect, sphere detection is performed for the data symbols in an order determined based on at least one attribute of the data symbols, which may be error probabilities, modulation schemes, and/or link margins for the data symbols. In yet another aspect, rates for multiple data streams detected with sphere detection are selected based on channel state information. Signal qualities of the data streams may be estimated based on the channel state information, e.g., (1) an upper triangular matrix used for sphere detection and/or (2) an assumption that interference from data streams already detected is canceled. The rates for the data streams may be selected based on the estimated signal qualities.
摘要翻译：描述了用于执行球体检测以恢复在MIMO传输中发送的数据符号的技术。在一个方面，对用至少两个调制方案产生的数据符号执行球体检测。在另一方面，以数据符号的至少一个属性确定的顺序对数据符号执行球体检测，数据符号可以是数据符号的错误概率，调制方案和/或链接余量。在另一方面，基于信道状态信息选择用球检测检测的多个数据流的速率。可以基于信道状态信息来估计数据流的信号质量，例如（1）用于球体检测的上三角矩阵和/或（2）已经检测到的来自数据流的干扰被消除的假设。可以基于估计的信号质量来选择数据流的速率。

93. 发明申请

US20100246704A1 METHOD AND APPARATUS FOR PROCESSING DATA FOR TRANSMISSION IN A MULTI-CHANNEL COMMUNICATION SYSTEM USING SELECTIVE CHANNEL INVERSION 有权
公开(公告)号：US20100246704A1
公开(公告)日：2010-09-30
申请号：US12713121
申请日：2010-02-25
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 , 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.

94. 发明授权

US07653142B2 Channel estimation and spatial processing for TDD MIMO systems 有权
标题翻译： TDD MIMO系统的信道估计和空间处理
公开(公告)号：US07653142B2
公开(公告)日：2010-01-26
申请号：US11610351
申请日：2006-12-13
申请人： John W. Ketchum , Mark S. Wallace , Jay Rodney Walton , Steven J. Howard
发明人： John W. Ketchum , Mark S. Wallace , Jay Rodney Walton , Steven J. Howard
IPC分类号： H04L1/02 , H04L27/00
CPC分类号： H04L27/261 , H04B7/0413 , H04B7/0421 , H04B7/0615 , H04B7/0619 , H04B7/0669 , H04B7/0697 , H04B7/0854 , H04L1/0001 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L25/0224 , H04L25/0226 , H04L25/0242 , H04L25/03343 , H04L27/2601 , H04L27/2602 , H04L27/2647 , H04W16/28 , H04W52/50
摘要： Channel estimation and spatial processing for a TDD MIMO system. Calibration may be performed to account for differences in the responses of transmit/receive chains at the access point and user terminal. During normal operation, a MIMO pilot is transmitted on a first link and used to derive an estimate of the first link channel response, which is decomposed to obtain a diagonal matrix of singular values and a first unitary matrix containing both left eigenvectors of the first link and right eigenvectors of a second link. A steered reference is transmitted on the second link using the eigenvectors in the first unitary matrix, and is processed to obtain the diagonal matrix and a second unitary matrix containing both left eigenvectors of the second link and right eigenvectors of the first link. Each unitary matrix may be used to perform spatial processing for data transmission/reception via both links.
摘要翻译： TDD MIMO系统的信道估计和空间处理。可以执行校准以解决在接入点和用户终端处的发送/接收链的响应的差异。在正常操作期间，在第一链路上发送MIMO导频，并用于导出第一链路信道响应的估计，其被分解以获得奇异值的对角矩阵，以及包含第一链路的左特征向量的第一酉矩阵和第二个链接的右特征向量。使用第一单位矩阵中的特征向量在第二链路上传送转向参考，并且被处理以获得对角矩阵和包含第二链路的左特征向量和第一链路的右特征向量的第二单元矩阵。每个单一矩阵可以用于经由两个链路进行数据发送/接收的空间处理。

95. 发明申请

US20090290657A1 Continuous Beamforming for a MIMO-OFDM System 有权
标题翻译： MIMO-OFDM系统的连续波束成形
公开(公告)号：US20090290657A1
公开(公告)日：2009-11-26
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 , H04L27/00
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。

96. 发明申请

US20070249296A1 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：US20070249296A1
公开(公告)日：2007-10-25
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： H04B7/00 , H04B1/02 , H04M1/00
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。

97. 发明授权

US07194042B2 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：US07194042B2
公开(公告)日：2007-03-20
申请号：US11009200
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： 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。

98. 发明授权

US07047016B2 Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system 有权
公开(公告)号：US07047016B2
公开(公告)日：2006-05-16
申请号：US09859346
申请日：2001-05-16
申请人： Jay Rod Walton , Mark S. Wallace , Steven J. Howard
发明人： Jay Rod Walton , Mark S. Wallace , Steven J. Howard
IPC分类号： H04Q7/20
CPC分类号： H04W72/121 , H04B7/0417 , H04B7/0626 , H04B7/0697 , H04B7/0891 , H04W72/1205
摘要： Techniques to schedule uplink data transmission for a number of terminals in a wireless communication system. In one method, a number of sets of terminals are formed for possible data transmission, with each set including a unique combination of terminals and corresponds to a hypothesis to be evaluated. The performance of each hypothesis is evaluated (e.g., based on channel response estimates for each terminal) and one of the evaluated hypotheses is selected based on the performance. The terminals in the selected hypothesis are scheduled for data transmission. A successive cancellation receiver processing scheme may be used to process the signals transmitted by the scheduled terminals. In this case, one or more orderings of the terminals in each set may be formed, with each terminal ordering corresponding to a sub-hypothesis to be evaluated. The performance of each sub-hypothesis is then evaluated and one of the sub-hypotheses is selected.

99. 发明授权

US06542488B2 Methods and apparatuses for fast power control of signals transmitted on a multiple access channel 有权
标题翻译：用于在多路访问信道上传输的信号的快速功率控制的方法和装置
公开(公告)号：US06542488B2
公开(公告)日：2003-04-01
申请号：US09829570
申请日：2001-04-09
申请人： Jay R. Walton , John W. Ketchum , Steven J. Howard , Mark S. Wallace
发明人： Jay R. Walton , John W. Ketchum , Steven J. Howard , Mark S. Wallace
IPC分类号： H04J1300
CPC分类号： H04W72/1289 , H04W52/50
摘要： A method and apparatus for controlling the transmission of signals from one or more of a plurality of mobile stations to a base station on a plurality of M multiple access channels. A power control information packet formed from a plurality of power control bits is transmitted from the base station to the one or more mobile stations. Each of the power control bits in the power control information packet has a position that is mapped to a selected access channel and to a time offset within the selected access channel. The power control information packet is received at a first mobile station. A message is then transmitted from the first mobile station to the base station on a first access channel and at a first time offset associated with the first access channel. The message is transmitted from the first mobile station at a power level determined in response to a first power control bit in the power control information packet. The first power control bit is located in a first position in the power control information packet, the first position being mapped to the first access channel and the first time offset.
摘要翻译：一种用于控制从多个M个多址信道中的多个移动台中的一个或多个到基站的信号的传输的方法和装置。从多个功率控制比特形成的功率控制信息分组从基站发送到一个或多个移动台。功率控制信息分组中的每个功率控制位具有映射到所选择的接入信道和所选择的接入信道内的时间偏移的位置。功率控制信息分组在第一移动台处被接收。然后，在第一接入信道和与第一接入信道相关联的第一时间偏移处，将消息从第一移动台发送到基站。该消息以响应于功率控制信息分组中的第一功率控制位确定的功率电平从第一移动台发送。第一功率控制位位于功率控制信息分组中的第一位置，第一位置被映射到第一接入信道和第一时间偏移。

100. 发明授权

US08948705B2 Multiple-access hybrid OFDM-CDMA system 有权
标题翻译：多址混合OFDM-CDMA系统
公开(公告)号：US08948705B2
公开(公告)日：2015-02-03
申请号：US13227946
申请日：2011-09-08
申请人： Jay R. Walton , John W. Ketchum , Steven J. Howard , Mark Wallace
发明人： Jay R. Walton , John W. Ketchum , Steven J. Howard , Mark Wallace
IPC分类号： H04B1/00 , H04B7/00 , H04W52/12 , H04B1/692 , H04L5/00 , H04L5/02 , H04L27/00 , H04L27/26 , H04W52/28 , H04L25/02
CPC分类号： H04W52/12 , H04B1/692 , H04L5/0021 , H04L5/0048 , H04L5/026 , H04L25/0228 , H04L27/0008 , H04L27/2607 , H04L27/2613 , H04L27/2647 , H04L27/2655 , H04W52/286
摘要： In one aspect of a multiple-access OFDM-CDMA system, data spreading is performed in the frequency domain by spreading each data stream with a respective spreading code selected from a set of available spreading codes. To support multiple access, system resources may be allocated and de-allocated to users (e.g., spreading codes may be assigned to users as needed, and transmit power may be allocated to users). Variable rate data for each user may be supported via a combination of spreading adjustment and transmit power scaling. Interference control techniques are also provided to improve system performance via power control of the downlink and/or uplink transmissions to achieve the desired level of performance while minimizing interference. A pilot may be transmitted by each transmitter unit to assist the receiver units perform acquisition, timing synchronization, carrier recovery, handoff, channel estimation, coherent data demodulation, and so on.
摘要翻译：在多址OFDM-CDMA系统的一个方面，通过用从一组可用的扩展码中选择的相应的扩展码扩展每个数据流，在频域中执行数据扩展。为了支持多次访问，可以向用户分配和分配系统资源（例如，可以根据需要将扩展码分配给用户，并且发送功率可以被分配给用户）。可以通过扩展调整和发射功率缩放的组合来支持每个用户的可变速率数据。还提供干扰控制技术以通过下行链路和/或上行链路传输的功率控制来提高系统性能，以实现期望的性能水平同时最小化干扰。每个发射机单元可以发送导频，以帮助接收机单元执行采集，定时同步，载波恢复，切换，信道估计，相干数据解调等。

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