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31. 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。

32. 发明授权

US07194040B2 Beam-steering and beam-forming for wideband MIMO/MISO systems 有权
标题翻译：用于宽带MIMO / MISO系统的波束转向和波束形成
公开(公告)号：US07194040B2
公开(公告)日：2007-03-20
申请号：US11184601
申请日：2005-07-18
申请人： Murali Paravath Menon , John W. Ketchum , Mark Wallace , Jay Rod Walton , Steven J. Howard
发明人： Murali Paravath Menon , John W. Ketchum , Mark Wallace , Jay Rod Walton , Steven J. Howard
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04B7/0417 , H01Q3/26 , H04B7/043 , H04B7/0617 , H04B7/0634 , H04L5/0025 , H04L5/0044 , H04L5/0053 , H04L5/006 , H04L5/0085 , H04L5/0096 , H04L25/0204 , H04L25/0246 , H04L25/0248 , H04L25/03343 , H04L2025/03414 , H04L2025/03426 , H04L2025/03802 , H04W52/42
摘要： Techniques to perform beam-steering and beam-forming to transmit data on a single eigenmode in a wideband multiple-input channel. In one method, a steering vector is obtained for each of a number of subbands. Depending on how the steering vectors are defined, beam-steering or beam-forming can be achieved for each subband. The total transmit power is allocated to the subbands based on a particular power allocation scheme (e.g., full channel inversion, selective channel inversion, water-filling, or uniform). A scaling value is then obtained for each subband based on its allocated transmit power. Data to be transmitted is coded and modulated to provide modulation symbols. The modulation symbols to be transmitted on each subband are scaled with the subband's scaling value and further preconditioned with the subband's steering vector. A stream of preconditioned symbols is then formed for each transmit antenna.
摘要翻译：执行波束转向和波束成形以在宽带多输入通道中的单个本征模上传输数据的技术。在一种方法中，为多个子带中的每一个获得导向矢量。取决于如何定义导向矢量，可以为每个子带实现波束转向或波束形成。基于特定功率分配方案（例如，全信道反转，选择性信道反转，充水或均匀）将总发射功率分配给子带。然后根据其分配的发射功率，为每个子带获得缩放值。要发送的数据被编码和调制以提供调制符号。要在每个子带上发送的调制符号用子带的缩放值进行缩放，并进一步用子带的导向矢量进行预处理。然后为每个发射天线形成预处理符号流。

33. 发明授权

US07184743B2 Method and apparatus for allocating uplink resources in a multiple-input multiple-output (MIMO) communication system 有权
标题翻译：用于在多输入多输出（MIMO）通信系统中分配上行链路资源的方法和装置
公开(公告)号：US07184743B2
公开(公告)日：2007-02-27
申请号：US11301790
申请日：2005-12-12
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： H04B1/16
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.
摘要翻译：在无线通信系统中为多个终端安排上行链路数据传输的技术。在一种方法中，为了可能的数据传输而形成多个终端组，每组包括终端的唯一组合，并对应于待评估的假设。评估每个假设的性能（例如，基于每个终端的信道响应估计），并且基于性能选择一个评估假设。所选假设中的终端被调度用于数据传输。可以使用连续的取消接收器处理方案来处理由调度的终端发送的信号。在这种情况下，可以形成每组中的终端的一个或多个排序，其中每个终端排序对应于待评估的子假设。然后评估每个子假设的性能，并选择一个子假设。

34. 发明授权

US06785341B2 Method and apparatus for processing data in a multiple-input multiple-output (MIMO) communication system utilizing channel state information 有权
标题翻译：利用信道状态信息在多输入多输出（MIMO）通信系统中处理数据的方法和装置
公开(公告)号：US06785341B2
公开(公告)日：2004-08-31
申请号：US09854235
申请日：2001-05-11
申请人： Jay R. Walton , Mark Wallace , John W. Ketchum , Steven J. Howard
发明人： Jay R. Walton , Mark Wallace , John W. Ketchum , Steven J. Howard
IPC分类号： H04B702
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）。

35. 发明授权

US06760388B2 Time-domain transmit and receive processing with channel eigen-mode decomposition for MIMO systems 有权
标题翻译：用于MIMO系统的信道本征模式分解的时域发射和接收处理
公开(公告)号：US06760388B2
公开(公告)日：2004-07-06
申请号：US10017308
申请日：2001-12-07
申请人： John W. Ketchum , Mark Wallace , Steven J. Howard , Jay Rod Walton
发明人： John W. Ketchum , Mark Wallace , Steven J. Howard , Jay Rod Walton
IPC分类号： H04L2704
CPC分类号： H04B7/0417 , H04B7/0443 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/0029 , H04L25/03343 , H04L25/03834 , H04L27/2601 , H04L27/2647 , H04L2025/0349 , H04L2025/03605
摘要： Techniques for processing a data transmission at the transmitter and receiver. In an aspect, a time-domain implementation is provided which uses frequency-domain singular value decomposition and “water-pouring” results to derive time-domain pulse-shaping and beam-steering solutions at the transmitter and receiver. The singular value decomposition is performed at the transmitter to determine eigen-modes (i.e., spatial subchannels) of the MIMO channel and to derive a first set of steering vectors used to “precondition” modulation symbols. The singular value decomposition is also performed at the receiver to derive a second set of steering vectors used to precondition the received signals such that orthogonal symbol streams are recovered at the receiver, which can simplify the receiver processing. Water-pouring analysis is used to more optimally allocate the total available transmit power to the eigen-modes, which then determines the data rate and the coding and modulation scheme to be used for each eigen-mode.
摘要翻译：用于在发射机和接收机处理数据传输的技术。在一方面，提供了时域实现，其使用频域奇异值分解和“注水”结果以在发射机和接收机处导出时域脉冲整形和波束导向解决方案。在发射机处执行奇异值分解以确定MIMO信道的本征模式（即，空间子信道），并导出用于“调制前缀”调制符号的第一组导引向量。奇异值分解也在接收机处执行，以导出用于预处理接收信号的第二组导引向量，使得在接收机处恢复正交符号流，这可以简化接收机处理。使用浇注分析来更好地将总可用发射功率分配给本征模式，该本征模式确定了要用于每个本征模式的数据速率和编码和调制方案。

36. 发明授权

US09031097B2 MIMO system with multiple spatial multiplexing modes 有权
公开(公告)号：US09031097B2
公开(公告)日：2015-05-12
申请号：US12649040
申请日：2009-12-29
申请人： J. Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
发明人： J. Rodney Walton , John W. Ketchum , Mark S. Wallace , Steven J. Howard
IPC分类号： H04J11/00 , H04B7/14 , H04B7/04 , H04L25/02 , H04B7/06 , H04B7/08 , H04L1/00 , H04L1/06 , H04W74/04 , H04W72/04 , H04L5/00 , H04L27/26 , H04L25/03 , H04W16/28 , H04W52/50
CPC分类号： H04B7/0417 , H04B7/0421 , H04B7/043 , H04B7/0434 , H04B7/0452 , H04B7/0628 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04B7/0854 , H04B7/0871 , H04J11/003 , H04J11/0053 , H04L1/0001 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L1/06 , H04L5/0073 , H04L25/0224 , H04L25/0226 , H04L25/0242 , H04L25/0248 , H04L25/03343 , H04L25/03891 , H04L27/2601 , H04L27/2602 , H04L27/261 , H04L27/2647 , H04L27/2675 , H04W16/28 , H04W52/50 , H04W72/046 , H04W74/04
摘要： A MIMO system supports multiple spatial multiplexing modes for improved performance and greater flexibility. These modes may include (1) a single-user steered mode that transmits multiple data streams on orthogonal spatial channels to a single receiver, (2) a single-user non-steered mode that transmits multiple data streams from multiple antennas to a single receiver without spatial processing at a transmitter, (3) a multi-user steered mode that transmits multiple data streams simultaneously to multiple receivers with spatial processing at a transmitter, and (4) a multi-user non-steered mode that transmits multiple data streams from multiple antennas (co-located or non co-located) without spatial processing at the transmitter(s) to receiver(s) having multiple antennas. For each set of user terminal(s) selected for data transmission on the downlink and/or uplink, a spatial multiplexing mode is selected for the user terminal set from among the multiple spatial multiplexing modes supported by the system.

37. 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。

38. 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。

39. 发明授权

US08320301B2 MIMO WLAN system 有权
标题翻译： MIMO WLAN系统
公开(公告)号：US08320301B2
公开(公告)日：2012-11-27
申请号：US10693419
申请日：2003-10-23
申请人： J. Rodney Walton , Mark S. Wallace , John W. Ketchum , Steven J. Howard
发明人： J. Rodney Walton , Mark S. Wallace , John W. Ketchum , Steven J. Howard
IPC分类号： H04W4/00 , H04L7/02
CPC分类号： H04L5/0048 , H04B7/022 , H04B7/0421 , H04B7/043 , H04B7/0443 , H04B7/0669 , H04B7/0689 , H04B7/0697 , H04B7/0854 , H04B7/0871 , H04L1/0003 , H04L1/0009 , H04L1/0017 , H04L1/0025 , H04L1/0059 , H04L1/0061 , H04L1/0069 , H04L1/0071 , H04L1/0606 , H04L1/0625 , H04L1/0656 , H04L1/08 , H04L1/16 , H04L1/1887 , H04L5/0023 , H04L25/0204 , H04L25/0226 , H04L25/0228 , H04L25/0248 , H04L25/03343 , H04L27/2602 , H04L27/2607 , H04L27/2647 , H04L2025/03414 , H04L2025/03426 , H04W28/20 , H04W28/22 , H04W52/42 , H04W52/50 , H04W72/12 , H04W84/12
摘要： A multiple-access MIMO WLAN system that employs MIMO, OFDM, and TDD. The system (1) uses a channel structure with a number of configurable transport channels, (2) supports multiple rates and transmission modes, which are configurable based on channel conditions and user terminal capabilities, (3) employs a pilot structure with several types of pilot (e.g., beacon, MIMO, steered reference, and carrier pilots) for different functions, (4) implements rate, timing, and power control loops for proper system operation, and (5) employs random access for system access by the user terminals, fast acknowledgment, and quick resource assignments. Calibration may be performed to account for differences in the frequency responses of transmit/receive chains at the access point and user terminals. The spatial processing may then be simplified by taking advantage of the reciprocal nature of the downlink and uplink and the calibration.
摘要翻译：采用MIMO，OFDM和TDD的多接入MIMO WLAN系统。系统（1）使用具有多个可配置传输信道的信道结构，（2）支持基于信道条件和用户终端能力可配置的多种速率和传输模式，（3）采用具有多种类型（4）实现速率，定时和功率控制环路，实现系统正常运行，（5）采用随机接入方式进行系统接入，由用户终端，快速确认和快速的资源分配。可以执行校准以考虑接入点和用户终端处的发射/接收链的频率响应的差异。然后可以通过利用下行链路和上行链路的相互性质和校准来简化空间处理。

40. 发明申请

US20120213302A1 MULTI-ANTENNA TRANSMISSION FOR SPATIAL DIVISION MULTIPLE ACCESS 有权
标题翻译：用于空间多路访问的多天线传输
公开(公告)号：US20120213302A1
公开(公告)日：2012-08-23
申请号：US11869547
申请日：2007-10-09
申请人： J. Rodney Walton , John W. Ketchum , John Edward Smee , Mark S. Wallace , Steven J. Howard
发明人： J. Rodney Walton , John W. Ketchum , John Edward Smee , Mark S. Wallace , Steven J. Howard
IPC分类号： H04B7/02
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.
摘要翻译：获得每个终端的上行链路信道响应矩阵，并对其进行分解，得到终端在上行链路上使用的导向矢量。基于其导向向量及其信道响应矩阵，为每个终端形成“有效”上行链路信道响应向量。基于其有效信道响应向量来评估多组终端，以确定用于上行链路传输的最佳集合（例如具有最高总吞吐量）。每个选择的终端利用其导向向量对其数据符号流执行空间处理，并将其空间处理的数据符号流发送到接入点。多个选择的终端通过其相应的MIMO信道同时将其数据符号流发送到接入点。接入点根据接收机空间处理技术对其接收到的符号流执行接收机空间处理，以恢复由所选终端发送的数据符号流。

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