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1.发明授权公开(公告)号：US08385386B2
公开(公告)日：2013-02-26
申请号：US12782406
申请日：2010-05-18
IPC分类号： H04B1/00
摘要： Accordingly, a method and apparatus are provided to convert received content into a first stream and a second stream, to transmit said first stream using a first tone and to transmit said second stream using an orthogonal scheme. A layering scheme is used to transmit the base stream covering a smaller area and an enhanced stream is used to cover a large utilizing orthogonal scheme.
摘要翻译： 因此，提供了一种方法和装置，用于将接收到的内容转换为第一流和第二流，以使用第一音调发送所述第一流，并使用正交方案发送所述第二流。 使用分层方案来传输覆盖较小区域的基本流，并且使用增强流来覆盖大的利用正交方案。
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公开(公告)号：US20080165891A1
公开(公告)日：2008-07-10
申请号：US11691243
申请日：2007-03-26
IPC分类号： H04L27/00
CPC分类号： H04L25/0202 , H04L5/0023 , H04L5/0048
摘要： Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.
摘要翻译： 描述用于发送导频和处理接收导频以获得信道和干扰估计的技术。 终端可以基于第一序列在时间频率块中生成用于第一簇的导频符号，并且可以基于第二序列在时间频率块中生成用于第二簇的导频符号。 第一和第二序列可以包括以不同顺序排列的公共元素，并且可以被认为是单个序列的不同版本。 终端可以在它们各自的簇中发送导频符号。 基站可以在时间频率块中从多个簇获得接收到的导频符号。 基站可以形成分配给终端的序列的多个版本的多个基本向量中的每一个，并且可以用多个基本向量处理所接收的导频符号以获得终端的信道估计。
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3.发明授权Method and apparatus for selection and use of optimal antennas in wireless systems 有权在无线系统中选择和使用最佳天线的方法和装置公开(公告)号：US06917820B2
公开(公告)日：2005-07-12
申请号：US09769445
申请日：2001-01-26
CPC分类号： H04B7/0874 , H04B7/061 , H04B7/0639 , H04B7/0673 , H04B7/0691
摘要： A method and apparatus for selecting an optimal set of antennas from a plurality of antennas for use by a transmitter and/or receiver having a plurality of RF chains to transmit and/or receive a wireless signal on a wireless link. According to the invention information concerning transmission of wireless signals on the wireless link is determined and an optimal set of antennas from the plurality of antennas is selected based on the information. Thereafter, the RF chains are connected to the optimal set of antennas to permit transmission and/or reception of the wireless signal from the RF chains on the wireless link via the optimal set of antennas. The RF chains correspond in number to the number of antennas in the optimal set of antennas, and the number of antennas included in the plurality of antennas is greater than the number of RF chains.
摘要翻译： 一种用于从多个天线中选择由具有多个RF链发射和/或接收无线信号上的无线信号的发射机和/或接收机使用的最佳天线组的方法和装置。 根据本发明，确定关于无线链路上的无线信号的传输的信息，并且基于该信息选择来自多个天线的最佳天线组。 此后，RF链连接到最佳的天线集合，以允许经由最佳天线组从无线链路上的RF链发射和/或接收无线信号。 RF链的数量与最佳天线集合中的天线数量相对应，并且包括在多个天线中的天线的数量大于RF链的数量。
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公开(公告)号：US20100330946A1
公开(公告)日：2010-12-30
申请号：US12491122
申请日：2009-06-24
IPC分类号： H04B1/06
CPC分类号： H04B7/0871 , H01Q1/246 , H01Q3/2617 , H04B7/0854 , H04B7/0857 , H04B7/0885
摘要： Systems and methodologies are described that facilitate combining received signals from multiple receive antennas in a wireless communication environment. The received signals from the multiple receive antennas can be weighted utilizing an adaptive combination of maximal ratio combining (MRC) and interference nulling. The combination of MRC and interference nulling can be controlled based upon one or more configurable parameters. For instance, a covariance matrix can be modified to include the one or more configurable parameters, and the modified covariance matrix can be utilized in connection with interference nulling. Further, respective values for the one or more configurable parameters can be selected as a function of at least one input (e.g., measured interference-over-thermal (IoT) value, received loading level indicator, eigenvalue distribution of a covariance matrix, . . . ) related to noise correlation.
摘要翻译： 描述了在无线通信环境中有助于组合来自多个接收天线的接收信号的系统和方法。 可以使用最大比组合（MRC）和干扰归零的自适应组合来加权来自多个接收天线的接收信号。 可以基于一个或多个可配置参数来控制MRC和干扰归零的组合。 例如，可以修改协方差矩阵以包括一个或多个可配置参数，并且修改的协方差矩阵可以与干扰归零结合使用。 此外，可以根据至少一个输入（例如，测量的过热干扰（IoT）值，接收负载水平指示符，协方差矩阵的特征值分布等来选择一个或多个可配置参数的相应值。 。）与噪声相关。
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5.发明申请SYSTEMS AND METHODS OF SIMULTANEOUS, TIME-SHIFTED TRANSMISSION TO MULTIPLE RECEIVERS 审中-公开同时发送多时间接收器的系统和方法公开(公告)号：US20090310526A1
公开(公告)日：2009-12-17
申请号：US12482215
申请日：2009-06-10
IPC分类号： H04H20/71
CPC分类号： H04B7/022 , H04W56/0045
摘要： Systems and methods for communicating with multiple receivers simultaneously are disclosed. In one embodiment, the method comprises applying a first adjustment to a first signal based on a first propagation path delay between a transmitter and a first receiver, combining the adjusted first signal and a second signal, and transmitting a composite signal based on the combined signal substantially concurrently to the first receiver and a second receiver.
摘要翻译： 公开了与多个接收器同时通信的系统和方法。 在一个实施例中，该方法包括基于发射机和第一接收机之间的第一传播路径延迟对第一信号施加第一调整，组合经调整的第一信号和第二信号，以及基于组合信号发送复合信号 基本上同时发送到第一接收器和第二接收器。
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公开(公告)号：US08315660B2
公开(公告)日：2012-11-20
申请号：US11675055
申请日：2007-02-14
IPC分类号： H04B7/00
CPC分类号： H04W52/34
摘要： A method of user power offset estimation for a wireless communication system is disclosed. Dedicated pilot symbols transmitted over at least one time-frequency region for a user are received. Power offset of the user is estimated based on the received dedicated pilot symbols.
摘要翻译： 公开了一种用于无线通信系统的用户功率偏移估计的方法。 接收通过用户的至少一个时间 - 频率区域发送的专用导频符号。 基于所接收的专用导频符号来估计用户的功率偏移。
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公开(公告)号：US20120155425A1
公开(公告)日：2012-06-21
申请号：US13402537
申请日：2012-02-22
IPC分类号： H04W72/04
CPC分类号： H04L25/0202 , H04L5/0023 , H04L5/0048
摘要： Techniques for transmitting pilot and for processing received pilot to obtain channel and interference estimates are described. A terminal may generate pilot symbols for a first cluster in a time frequency block based on a first sequence and may generate pilot symbols for a second cluster in the time frequency block based on a second sequence. The first and second sequences may include common elements arranged in different orders and may be considered as different versions of a single sequence. The terminal may transmit the pilot symbols in their respective clusters. A base station may obtain received pilot symbols from multiple clusters in the time frequency block. The base station may form each of multiple basis vectors with multiple versions of the sequence assigned to the terminal and may process the received pilot symbols with the multiple basis vectors to obtain a channel estimate for the terminal.
摘要翻译： 描述用于发送导频和处理接收导频以获得信道和干扰估计的技术。 终端可以基于第一序列在时间频率块中生成用于第一簇的导频符号，并且可以基于第二序列在时间频率块中生成用于第二簇的导频符号。 第一和第二序列可以包括以不同顺序排列的公共元素，并且可以被认为是单个序列的不同版本。 终端可以在它们各自的簇中发送导频符号。 基站可以在时间频率块中从多个簇获得接收到的导频符号。 基站可以形成分配给终端的序列的多个版本的多个基本向量中的每一个，并且可以用多个基本向量处理所接收的导频符号以获得终端的信道估计。
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8.发明申请METHODS AND APPARATUS FOR STABILIZING FORWARD LINK MIMO RATE PREDICTION 审中-公开用于稳定前向链路MIMO速率预测的方法和装置公开(公告)号：US20110019559A1
公开(公告)日：2011-01-27
申请号：US12509776
申请日：2009-07-27
CPC分类号： H04L1/0029 , H04B7/0417 , H04B7/063
摘要： A method for stabilizing forward link multiple-input and multiple-output (MIMO) rate prediction is described. The forward link channel quality is measured. Instantaneous channel quality estimates are determined for each instantaneous rank. Each instantaneous channel quality estimate provides an instantaneous rate estimate for the instantaneous rank. Rank defines the number of forward link transmission streams and rate defines the total capacity of the forward link for each rank. The instantaneous rates are filtered to determine an average rate per rank. A maximum rate is selected as the maximum over the determined average rate per rank. The instantaneous rank corresponding to the maximum rate is selected as the optimal rank. The instantaneous rate corresponding to the optimal rank is selected as the optimal rate. The optimal rank and optimal rate are then sent to an access point.
摘要翻译： 描述了用于稳定前向链路多输入和多输出（MIMO）速率预测的方法。 测量前向链路信道质量。 确定每个瞬时等级的瞬时信道质量估计。 每个瞬时信道质量估计提供瞬时等级的瞬时速率估计。 Rank定义了前向链路传输流的数量，速率定义了每个等级的前向链路的总容量。 过滤瞬时速率以确定每个等级的平均速率。 选择最大速率作为每个等级确定的平均速率的最大速率。 选择对应于最大速率的瞬时秩为最优秩。 选择对应于最优秩的瞬时速率作为最优速率。 然后将最优秩和最优速率发送到接入点。
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公开(公告)号：US08396438B2
公开(公告)日：2013-03-12
申请号：US12491122
申请日：2009-06-24
CPC分类号： H04B7/0871 , H01Q1/246 , H01Q3/2617 , H04B7/0854 , H04B7/0857 , H04B7/0885
摘要： Systems and methodologies are described that facilitate combining received signals from multiple receive antennas in a wireless communication environment. The received signals from the multiple receive antennas can be weighted utilizing an adaptive combination of maximal ratio combining (MRC) and interference nulling. The combination of MRC and interference nulling can be controlled based upon one or more configurable parameters. For instance, a covariance matrix can be modified to include the one or more configurable parameters, and the modified covariance matrix can be utilized in connection with interference nulling. Further, respective values for the one or more configurable parameters can be selected as a function of at least one input (e.g., measured interference-over-thermal (IoT) value, received loading level indicator, eigenvalue distribution of a covariance matrix, . . . ) related to noise correlation.
摘要翻译： 描述了在无线通信环境中有助于组合来自多个接收天线的接收信号的系统和方法。 可以使用最大比组合（MRC）和干扰归零的自适应组合来加权来自多个接收天线的接收信号。 可以基于一个或多个可配置参数来控制MRC和干扰归零的组合。 例如，可以修改协方差矩阵以包括一个或多个可配置参数，并且修改的协方差矩阵可以与干扰归零结合使用。 此外，可以根据至少一个输入（例如，测量的过热干扰（IoT）值，接收负载水平指示符，协方差矩阵的特征值分布等来选择一个或多个可配置参数的相应值。 。）与噪声相关。
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公开(公告)号：US08335248B2
公开(公告)日：2012-12-18
申请号：US12247055
申请日：2008-10-07
CPC分类号： H04L25/03159 , H04L25/0204 , H04L25/021 , H04L25/0244 , H04L25/0256 , H04L2025/03414 , H04L2025/03426 , H04L2025/03605
摘要： Systems and methodologies are described that facilitate equalization of received signals in a wireless communication environment. Using multiple transmit and/or receive antennas and MIMO technology, multiple data streams can be transmitted within a single tone. During equalization, receivers can separate data received within a tone into individual data streams. The equalization process generally is computationally expensive. Equalizer functions include the inverse operation, which can be computed using the fast square root method; however, the fast square root method involves large numbers of computations for a set of matrices, where the size of a matrix in the set of matrices increases with the number of transmit or receive antennas. Utilizing a modification of the fast square root method, a subset of the elements of the matrices can be selected and updated to reduce the number and/or complexity of computations.
摘要翻译： 描述了促进无线通信环境中的接收信号的均衡的系统和方法。 使用多个发射和/或接收天线和MIMO技术，可以在单个音调内传输多个数据流。 在均衡期间，接收机可以将音调内接收到的数据分离为单独的数据流。 均衡过程通常在计算上是昂贵的。 均衡器功能包括逆运算，可以使用快速平方根法计算; 然而，快速平方根方法涉及对于一组矩阵的大量计算，其中矩阵集合中的矩阵的大小随着发射或接收天线的数量而增加。 利用快速平方根方法的修改，可以选择和更新矩阵元素的子集，以减少计算的数量和/或复杂度。
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