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1.发明申请Apparatus and method for beamforming in a multiantenna multiuser communication system 有权多天线多用户通信系统中波束成形的装置和方法公开(公告)号：US20090253380A1
公开(公告)日：2009-10-08
申请号：US12383143
申请日：2009-03-20
IPC分类号： H04B7/00
CPC分类号： H04B7/0639 , H04B7/043 , H04B7/0452 , H04B7/0619
摘要： A method for beamforming by a transmission device in a multiantenna multiuser communication system. The method includes grouping codebook indexes included in a codebook into codebook index combinations, and calculating a sum of transmission rate for each of the codebook index combinations; selecting a codebook index combination with a maximum sum of transmission rate as an optimal codebook index combination; and transmitting a codebook index corresponding to a particular reception device among codebook indexes included in the optimal codebook index combination, to the particular reception device.
摘要翻译： 一种用于多天线多用户通信系统中的传输装置的波束成形的方法。 该方法包括将包括在码本中的码本索引分组为码本索引组合，并计算每个码本索引组合的传输速率之和; 选择具有最大传输速率和的码本索引组合作为最佳码本索引组合; 以及将包含在最佳码本索引组合中的码本索引中的与特定接收装置对应的码本索引发送到特定接收装置。
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公开(公告)号：US20100284449A1
公开(公告)日：2010-11-11
申请号：US12727049
申请日：2010-03-18
CPC分类号： H04B7/0877 , H04B7/0417 , H04B7/063 , H04B7/0689 , H04W52/0261 , Y02D70/1262 , Y02D70/1264 , Y02D70/146 , Y02D70/444
摘要： Examples are generally described that include methods for selecting a transmit mode in a communications system. An example method may include calculating a first transmission rate for data in a multiple-input multiple-output mode of the communications system and calculating a second transmission rate for the data in a single-input multiple-output mode of the communications system. A mode may be selected from the group consisting of the multiple-input multiple-output mode and the single-input multiple-output mode based, at least in part, on an energy consumption of the first and second transmission rates. Data may be transmitted from a transceiver in the communications system using the selected mode.
摘要翻译： 通常描述包括在通信系统中选择发送模式的方法的示例。 示例性方法可以包括为通信系统的多输入多输出模式中的数据计算第一传输速率，并计算通信系统的单输入多输出模式中的数据的第二传输速率。 至少部分地基于第一和第二传输速率的能量消耗，从多输入多输出模式和单输入多输出模式中选择模式。 可以使用所选择的模式从通信系统中的收发器发送数据。
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公开(公告)号：US20130176966A1
公开(公告)日：2013-07-11
申请号：US13780995
申请日：2013-02-28
IPC分类号： H04W72/04
CPC分类号： H04B7/06 , H04B7/0613 , H04B7/2612 , H04B17/309 , H04H20/71 , H04W16/02 , H04W16/12 , H04W16/24 , H04W16/28 , H04W28/12 , H04W36/24 , H04W72/046 , H04W74/04 , H04W80/00 , H04W84/042 , H04W88/02 , H04W88/08
摘要： The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required. The combiner combines the estimated substreams into a corresponding subscriber datastream.
摘要翻译： 本发明提供了在无线网络中的信息广播期间结合一个或多个多址协议来实现空间复用的方法和装置。 公开了一种用于蜂窝系统的用户单元。 用户单元包括：空间分离的接收机，空间处理器和组合器。 空间分离的接收机接收由订户下行链路数据流的空间分离传输产生的分配的信道复合信号。 空间处理器可以响应于由基站发送的控制信号来配置，以基于从至少一个基站传输已知数据模式期间获得的信息将复合信号分离成估计的子流。 当需要空间传输配置的改变时，空间处理器向基站发信号。 组合器将估计的子流组合成相应的用户数据流。
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公开(公告)号：US20130176968A1
公开(公告)日：2013-07-11
申请号：US13781048
申请日：2013-02-28
IPC分类号： H04W72/04
CPC分类号： H04B7/06 , H04B7/0613 , H04B7/2612 , H04B17/309 , H04H20/71 , H04W16/02 , H04W16/12 , H04W16/24 , H04W16/28 , H04W28/12 , H04W36/24 , H04W72/046 , H04W74/04 , H04W80/00 , H04W84/042 , H04W88/02 , H04W88/08
摘要： The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required. The combiner combines the estimated substreams into a corresponding subscriber datastream.
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5.发明申请公开(公告)号：US20120045007A1
公开(公告)日：2012-02-23
申请号：US12999029
申请日：2010-08-20
IPC分类号： H04J11/00
CPC分类号： H04B7/0413 , H04B7/0669 , H04L1/0631 , H04L1/0643 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226
摘要： Examples are generally described that include transmission methods including inserting at least a portion of data from a first data stream into a second data stream to be transmitted over a communications channel. On receipt of the two data streams, examples of receiving methods include receiving the replicated data, decoding the replicated data using an estimated channel matrix, and generating an updated estimate of the channel matrix based, at least in part, on the replicated data.
摘要翻译： 通常描述包括传输方法的示例，包括将来自第一数据流的数据的至少一部分插入到要通过通信信道发送的第二数据流。 在接收到两个数据流时，接收方法的示例包括接收复制数据，使用估计的信道矩阵解码复制数据，以及至少部分地基于复制数据生成更新的信道矩阵估计。
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公开(公告)号：US20100142636A1
公开(公告)日：2010-06-10
申请号：US12604350
申请日：2009-10-22
IPC分类号： H04K1/10
CPC分类号： H04W72/042 , H04W16/14 , H04W24/00 , H04W24/10 , H04W48/18 , H04W72/0413 , H04W88/06
摘要： A wireless communications adapts its mode of operation between spatial multiplexing and non-spatial multiplexing in response to transmission-specific variables. An embodiment of a wireless communications system for transmitting information between a base transceiver station and a subscriber unit includes mode determination logic. The mode determination logic is in communication with the base transceiver station and the subscriber unit. The mode determination logic determines, in response to a received signal, if a subscriber datastream should be transmitted between the base transceiver station and the subscriber unit utilizing spatial multiplexing or non-spatial multiplexing. In an embodiment, the mode determination logic has an input for receiving a measure of a transmission characteristic related to the received signal. In an embodiment, the mode determination logic includes logic for comparing the measured transmission characteristic to a transmission characteristic threshold and for selecting one of spatial multiplexing and non-spatial multiplexing in response to the comparison of the measured transmission characteristic to the transmission characteristic threshold. In an embodiment, the transmission characteristic includes at least one of delay spread, post-processing signal-to-noise ratio, cyclical redundancy check (CRC) failure, residual inter-symbol interference, mean square error, coherence time, and path loss. By adapting the mode of operation in response to transmission-specific variables, the use of spatial multiplexing can be discontinued in unfavorable conditions. Additionally, because the wireless communications system can adapt its mode of operation between spatial multiplexing and non-spatial multiplexing, the communications system is compatible with both subscriber units that support spatial multiplexing and subscriber units that do not support spatial multiplexing.
摘要翻译： 无线通信响应于传输特定变量，适应其在空间复用和非空间复用之间的操作模式。 用于在基站和用户单元之间发送信息的无线通信系统的实施例包括模式确定逻辑。 模式确定逻辑与基站收发台和用户单元通信。 模式确定逻辑响应于接收到的信号，确定在基站收发台和订户单元之间是否应使用空间复用或非空间复用来发送订户数据流。 在一个实施例中，模式确定逻辑具有用于接收与所接收信号相关的传输特性的度量的输入。 在一个实施例中，模式确定逻辑包括用于将所测量的传输特性与传输特性阈值进行比较并用于响应于测量的传输特性与传输特性阈值的比较来选择空间复用和非空间复用之一的逻辑。 在一个实施例中，传输特性包括延迟扩展，后处理信噪比，循环冗余校验（CRC）故障，残余符号间干扰，均方误差，相干时间和路径损耗中的至少一个。 通过适应传输特定变量的操作模式，可以在不利条件下停止使用空间复用。 此外，由于无线通信系统能够适应空间复用和非空间复用之间的操作模式，所以通信系统与支持空间复用的两个用户单元和不支持空间复用的用户单元兼容。
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公开(公告)号：US20120014473A1
公开(公告)日：2012-01-19
申请号：US12997831
申请日：2010-07-16
申请人： Robert W. Heath, JR. , Takao Inoue
发明人： Robert W. Heath, JR. , Takao Inoue
IPC分类号： H04L27/04
CPC分类号： H04L25/03961 , H04L5/0023 , H04L25/03949
摘要： Techniques for transmitting data over a communications channel are generally described. A value of a property of an inverse of a channel matrix corresponding to the communications channel may be calculated and compared to a threshold value. If the value of the property a first one of greater than or less than the threshold value, at least one transmit message may be altered using a vector perturbation technique to generate data symbols and the data symbols may be precoded using a channel inversion technique to generate precoded data symbols. If the value of the property is the other of greater than or less than the threshold value, the at least one transmit message may be precoded using a channel inversion technique to generate precoded data symbols.
摘要翻译： 通常描述通过通信信道发送数据的技术。 可以计算与通信信道相对应的信道矩阵的逆的属性的值，并将其与阈值进行比较。 如果属性的值大于或小于阈值，则可以使用向量扰动技术来改变至少一个发送消息以生成数据符号，并且可以使用信道反演技术对数据符号进行预编码以产生 预编码数据符号。 如果属性的值是大于或小于阈值的另一个，则可以使用信道反转技术对至少一个发送消息进行预编码，以生成预编码的数据符号。
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公开(公告)号：US20100260134A1
公开(公告)日：2010-10-14
申请号：US12823057
申请日：2010-06-24
IPC分类号： H04W72/00
CPC分类号： H04B7/06 , H04B7/0613 , H04B7/2612 , H04B17/309 , H04H20/71 , H04W16/02 , H04W16/12 , H04W16/24 , H04W16/28 , H04W28/12 , H04W36/24 , H04W72/046 , H04W74/04 , H04W80/00 , H04W84/042 , H04W88/02 , H04W88/08
摘要： The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required. The combiner combines the estimated substreams into a corresponding subscriber datastream.
摘要翻译： 本发明提供了在无线网络中的信息广播期间结合一个或多个多址协议来实现空间复用的方法和装置。 公开了一种用于蜂窝系统的用户单元。 用户单元包括：空间分离的接收机，空间处理器和组合器。 空间分离的接收机接收由订户下行链路数据流的空间分离传输产生的分配的信道复合信号。 空间处理器可以响应于由基站发送的控制信号来配置，以基于从至少一个基站传输已知数据模式期间获得的信息将复合信号分离成估计的子流。 当需要空间传输配置的改变时，空间处理器向基站发信号。 组合器将估计的子流组合成相应的用户数据流。
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9.发明申请System and Method For Distributed Input-Distributed Output Wireless Communications 有权分布式输入分布式输出无线通信系统与方法公开(公告)号：US20090067402A1
公开(公告)日：2009-03-12
申请号：US12143503
申请日：2008-06-20
CPC分类号： H04L25/03343 , H04B7/0626 , H04B7/0684 , H04L1/0003 , H04L1/0009 , H04L1/0026 , H04L1/007 , H04L25/0206 , H04L25/0224 , H04L2025/03414 , H04L2025/0377 , H04L2025/03802
摘要： A system and method are described for dynamically adapting the communication characteristics of a multiple antenna system (MAS) with multi-user (MU) transmissions (“MU-MAS”). For example, a method according to one embodiment of the invention comprises: transmitting a training signal from each antenna of a base station to each of a plurality of wireless client devices, each of the client devices analyzing each training signal to generate channel characterization data, and receiving the channel characterization data at the base station; computing a plurality of MU-MAS precoder weights based on the channel characterization data, the combined MU-MAS precoder weights comprising a MU-MAS channel matrix; determining instantaneous or statistical channel quality (“link quality metric”) for the wireless client devices using mutual information of MU-MAS links or singular values of the MU-MAS composite channel matrix; determining a subset of users and a MU-MAS transmission mode based on the link quality metric; precoding data using the MU-MAS precoder weights to generate precoded data signals for each antenna of the base station; and transmitting the precoded data signals through each antenna of the base station to each respective client device within the selected subset.
摘要翻译： 描述了一种用于动态地适应具有多用户（MU）传输（MU-MAS）的多天线系统（MAS）的通信特性的系统和方法。 例如，根据本发明的一个实施例的方法包括：将训练信号从基站的每个天线发送到多个无线客户端设备中的每一个，每个客户机设备分析每个训练信号以产生信道表征数据， 以及在所述基站处接收所述信道表征数据; 基于所述信道特征数据计算多个MU-MAS预编码器权重，所述组合的MU-MAS预编码器权重包括MU-MAS信道矩阵; 使用MU-MAS链路的互信息或MU-MAS复合信道矩阵的奇异值来确定无线客户端设备的即时或统计信道质量（“链路质量度量”）; 基于所述链路质量度量来确定用户的子集和MU-MAS传输模式; 使用MU-MAS预编码器权重预编码数据，以生成基站的每个天线的预编码数据信号; 以及将预编码的数据信号通过基站的每个天线发送到所选择的子集内的每个相应的客户机设备。
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公开(公告)号：US20130163526A1
公开(公告)日：2013-06-27
申请号：US13684010
申请日：2012-11-21
IPC分类号： H04H20/71
CPC分类号： H04B7/06 , H04B7/0613 , H04B7/2612 , H04B17/309 , H04H20/71 , H04W16/02 , H04W16/12 , H04W16/24 , H04W16/28 , H04W28/12 , H04W36/24 , H04W72/046 , H04W74/04 , H04W80/00 , H04W84/042 , H04W88/02 , H04W88/08
摘要： The present invention provides methods and apparatus for implementing spatial multiplexing in conjunction with the one or more multiple access protocols during the broadcast of information in a wireless network. A subscriber unit for use in a cellular system is disclosed. The subscriber unit includes: spatially separate receivers, a spatial processor, and a combiner. The spatially separate receivers receive the assigned channel composite signals resulting from the spatially separate transmission of the subscriber downlink datastream(s). The spatial processor is configurable in response to a control signal transmitted by the base station to separate the composite signals into estimated substreams based on information obtained during the transmission of known data patterns from at least one of the base stations. The spatial processor signals the base stations when a change of a spatial transmission configuration is required. The combiner combines the estimated substreams into a corresponding subscriber datastream.
摘要翻译： 本发明提供了在无线网络中的信息广播期间结合一个或多个多址协议来实现空间复用的方法和装置。 公开了一种用于蜂窝系统的用户单元。 用户单元包括：空间分离的接收机，空间处理器和组合器。 空间分离的接收机接收由订户下行链路数据流的空间分离传输产生的分配的信道复合信号。 空间处理器可以响应于由基站发送的控制信号来配置，以基于从至少一个基站传输已知数据模式期间获得的信息将复合信号分离成估计的子流。 当需要空间传输配置的改变时，空间处理器向基站发信号。 组合器将估计的子流组合成相应的用户数据流。
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