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公开(公告)号：US20130040705A1
公开(公告)日：2013-02-14
申请号：US13547521
申请日：2012-07-12
IPC分类号： H04L1/02
CPC分类号： H04B7/0617 , H04B7/04 , H04B7/0408 , H04B7/0413 , H04B7/0456 , H04B7/046 , H04B7/0486 , H04W52/42 , H04W88/02 , H04W88/08
摘要： A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink. User equipment (UE) estimates downlink channel and transmit power and determines rank and power allocations. A quantized beamforming matrix is then determined by the UE using successive beamforming. The UE also determines channel quality indices (CQI) which it feeds-back to the wireless downlink base station along with the index of the quantized beamforming matrix. The base station uses the CQI information to select a UE for scheduling of downlink transmission and the quantized beamforming matrix index received from the selected UE to beamform the downlink transmission to the UE. Base station overhead and is minimized while providing near-optimal performance given the constraints of a limited feed-back channel and computational complexity of the UE.
摘要翻译： 用于多天线系统的量化多级波束成形方案，例如多输入多输出（MIMO）无线下行链路。 用户设备（UE）估计下行链路信道和发射功率，并确定等级和功率分配。 然后由UE使用连续的波束形成来确定量化的波束形成矩阵。 UE还确定其反馈到无线下行链路基站的信道质量指数（CQI）以及量化波束形成矩阵的索引。 基站使用CQI信息来选择用于下行链路传输的调度的UE和从所选择的UE接收的量化的波束成形矩阵索引来波束形成到UE的下行链路传输。 给定了有限的反馈信道和UE的计算复杂度的限制，基站开销被最小化，同时提供接近最佳的性能。
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公开(公告)号：US20120275542A1
公开(公告)日：2012-11-01
申请号：US13547587
申请日：2012-07-12
IPC分类号： H04L27/12
CPC分类号： H04B7/0632 , H04B7/043 , H04B7/0456 , H04B7/0478 , H04B7/0617 , H04B7/0639
摘要： Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
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公开(公告)号：US20120275529A1
公开(公告)日：2012-11-01
申请号：US13547372
申请日：2012-07-12
IPC分类号： H04L27/28
CPC分类号： H04B7/0632 , H04B7/043 , H04B7/0456 , H04B7/0478 , H04B7/0617 , H04B7/0639
摘要： Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
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公开(公告)号：US20120269299A1
公开(公告)日：2012-10-25
申请号：US13267279
申请日：2011-10-06
IPC分类号： H04B7/08
CPC分类号： H04B7/0632 , H04B7/043 , H04B7/0456 , H04B7/0478 , H04B7/0617 , H04B7/0639
摘要： Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
摘要翻译： 公开了用于在一组并行通道上设计预编码器的连续多级波束形成策略（例如，连续预编码策略）的方法和装置。 连续波束成形被应用于窄带信道模型，并且还被应用于单个波束成形向量（例如，递归波束成形）的更精细量化。 第一实施例提供了高复杂度的最佳方法。 替代实施例提供连续的波束成形用于具有中等复杂度的近最优预编码选择。 还提供了一种用于预编码器选择的低复杂度方法，其中确定用于该组并行信道的信道代表性矩阵，并且应用所计算的信道代表上的连续波束成形。
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公开(公告)号：US20120257664A1
公开(公告)日：2012-10-11
申请号：US13441231
申请日：2012-04-06
CPC分类号： H04B7/0452 , H04B7/0417 , H04B7/0469 , H04B7/0626 , H04B7/063 , H04B7/0639 , H04L1/0013 , H04L1/0015 , H04L1/0021 , H04L1/0035 , H04L25/03949 , H04L2025/03808
摘要： A method for improving multiple-input multiple-output MIMO downlink transmissions includes obtaining a channel state information CSI report including preferred matrix index PMI for precoding, channel quality index CQI and rank index RI at a base station from user terminals through a channel feedback; applying selectively a signal-to-interference-plus-noise-ratio SINR offset to a SINR of said CSI report; applying selectively a rate matching responsive to SINR offset or the CSI report; and controlling or adjusting the SINR offset.
摘要翻译： 一种用于改善多输入多输出MIMO下行链路传输的方法包括从用户终端通过信道反馈获得包括用于预编码的优选矩阵索引PMI，信道质量指数CQI和基站处的秩索引RI的信道状态信息CSI报告; 选择性地对所述CSI报告的SINR应用信号与干扰加噪声比SINR偏移量; 选择性地应用响应于SINR偏移量或CSI报告的速率匹配; 并控制或调整SINR偏置。
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公开(公告)号：US08284859B2
公开(公告)日：2012-10-09
申请号：US13112750
申请日：2011-05-20
IPC分类号： H04L27/00
CPC分类号： H04B7/0632 , H04B7/043 , H04B7/0456 , H04B7/0478 , H04B7/0617 , H04B7/0639
摘要： Methods and apparatus are disclosed for applying successive multi-rank beamforming strategies (e.g., successive precoding strategies) for the design of precoders over a set of parallel channels. Successive beamforming is applied to a narrow band channel model and is also applied for finer quantization of a single beamforming vector (e.g., recursive beamforming). A first embodiment provides the optimal approach with high complexity. An alternative embodiment provides successive beamforming for near optimal precoding selection with medium complexity. A low complexity method for precoder selection is also provided wherein a channel representative matrix for the set of parallel channels is determined and successive beamforming on the calculated channel representative is applied.
摘要翻译： 公开了用于在一组并行通道上设计预编码器的连续多级波束形成策略（例如，连续预编码策略）的方法和装置。 连续波束成形被应用于窄带信道模型，并且还被应用于单个波束成形向量（例如，递归波束成形）的更精细量化。 第一实施例提供了高复杂度的最佳方法。 替代实施例提供连续的波束成形用于具有中等复杂度的近最优预编码选择。 还提供了一种用于预编码器选择的低复杂度方法，其中确定用于该组并行信道的信道代表性矩阵，并且应用所计算的信道代表上的连续波束成形。
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公开(公告)号：US08284855B2
公开(公告)日：2012-10-09
申请号：US13273880
申请日：2011-10-14
IPC分类号： H04B7/02
CPC分类号： H04W72/042 , H04B7/0417 , H04B7/0452 , H04B7/0465 , H04B7/0626 , H04B7/0639 , H04L1/0001 , H04L1/06
摘要： Multi-user (MU-) MIMO systems with quantized feedback are designed to maximize the sum-rate via scheduling and linear precoding. To maximize throughput over the network, quantized CSIT is sent through a low-rate feedback link feedback from a plurality of users back to a base station. The base station then determines a subset of the plurality of users to transmit one or more signals to based on the received feedback and determines a preceding matrix based on the received feedback from the plurality of users wherein the precoding matrix maximizes a sum-rate throughput for the subset of the plurality of users. Additionally, based on the received feedback, the base station designs a quantization codebook. This codebook may be designed off-line and/or online. The codebook and/or precoding matrix are used to transmit signals to the users.
摘要翻译： 设计了具有量化反馈的多用户（MU-）MIMO系统，以通过调度和线性预编码来最大化总和速率。 为了使网络上的吞吐量最大化，量化的CSIT通过从多个用户返回到基站的低速率反馈链路反馈发送。 基站然后基于所接收的反馈确定多个用户的子集以发送一个或多个信号，并且基于来自多个用户的接收到的反馈来确定先前的矩阵，其中预编码矩阵使和速率吞吐量最大化 多个用户的子集。 另外，基于接收到的反馈，基站设计量化码本。 该码本可以离线和/或在线设计。 码本和/或预编码矩阵用于向用户发送信号。
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公开(公告)号：US08271023B2
公开(公告)日：2012-09-18
申请号：US13155728
申请日：2011-06-08
IPC分类号： H04M1/00
CPC分类号： H04B7/0617 , H04B7/04 , H04B7/0408 , H04B7/0413 , H04B7/0456 , H04B7/046 , H04B7/0486 , H04W52/42 , H04W88/02 , H04W88/08
摘要： A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink User equipment (UE) estimates downlink channel and transmit power and determines rank and power allocations. A quantized beamforming matrix is then determined by the UE using successive beamforming. The UE also determines channel quality indices (CQI) which it feeds-back to the wireless downlink base station along with the index of the quantized beamforming matrix. The base station uses the CQI information to select a UE for scheduling of downlink transmission and the quantized beamforming matrix index received from the selected UE to beamform the downlink transmission to the UE. Base station overhead and is minimized while providing near-optimal performance given the constraints of a limited feed-back channel and computational complexity of the UE.
摘要翻译： 用于诸如多输入多输出（MIMO）无线下行链路用户设备（UE）的多天线系统的量化多级波束成形方案估计下行链路信道和发射功率并且确定等级和功率分配。 然后由UE使用连续的波束形成来确定量化的波束形成矩阵。 UE还确定其反馈到无线下行链路基站的信道质量指数（CQI）以及量化波束形成矩阵的索引。 基站使用CQI信息来选择用于下行链路传输的调度的UE和从所选择的UE接收的量化的波束成形矩阵索引来波束形成到UE的下行链路传输。 给定了有限的反馈信道和UE的计算复杂度的限制，基站开销被最小化，同时提供接近最佳的性能。
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79.发明授权Space-time precoding and associated feedback generation methods in multiple antenna systems 有权多天线系统中的时空预编码和相关反馈产生方法公开(公告)号：US08254999B2
公开(公告)日：2012-08-28
申请号：US13155903
申请日：2011-06-08
IPC分类号： H04M1/00
CPC分类号： H04B7/0617 , H04B7/04 , H04B7/0408 , H04B7/0413 , H04B7/0456 , H04B7/046 , H04B7/0486 , H04W52/42 , H04W88/02 , H04W88/08
摘要： A quantized multi-rank beamforming scheme for multiple-antenna systems such as a multiple-input-multiple-output (MIMO) wireless downlink. User equipment (UE) estimates downlink channel and transmit power and determines rank and power allocations. A quantized beamforming matrix is then determined by the UE using successive beamforming. The UE also determines channel quality indices (CQI) which it feeds-back to the wireless downlink base station along with the index of the quantized beamforming matrix. The base station uses the CQI information to select a UE for scheduling of downlink transmission and the quantized beamforming matrix index received from the selected UE to beamform the downlink transmission to the UE. Base station overhead and is minimized while providing near-optimal performance given the constraints of a limited feed-back channel and computational complexity of the UE.
摘要翻译： 用于多天线系统的量化多级波束成形方案，例如多输入多输出（MIMO）无线下行链路。 用户设备（UE）估计下行链路信道和发射功率，并确定等级和功率分配。 然后由UE使用连续的波束形成来确定量化的波束形成矩阵。 UE还确定其反馈到无线下行链路基站的信道质量指数（CQI）以及量化波束形成矩阵的索引。 基站使用CQI信息来选择用于下行链路传输的调度的UE和从所选择的UE接收的量化的波束成形矩阵索引来波束形成到UE的下行链路传输。 给定了有限的反馈信道和UE的计算复杂度的限制，基站开销被最小化，同时提供接近最佳的性能。
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80.发明申请Method For A canceling Self Interference Signal Using Passive Noise Cancellation For Full-Duplex Simultaneous (in Time) and Overlapping (In Space) Wireless transmission and Reception On The Same Frequency Band 有权用于全双工同时（时间）和重叠（空间）的被动噪声消除消除自干扰信号的方法在相同频带上的无线传输和接收公开(公告)号：US20120155336A1
公开(公告)日：2012-06-21
申请号：US13324998
申请日：2011-12-13
IPC分类号： H04B7/015
CPC分类号： H01Q3/2605 , H01Q21/00 , H04B1/525 , H04B7/0413 , H04B7/10
摘要： A method for full duplex communication that includes creating a canceling self interference signal using a passive noise cancellation, and attaining full-duplex simultaneous in time and overlapping in space wireless transmission and reception on same frequency band responsive to the step of creating a canceling self interference signal.
摘要翻译： 一种用于全双工通信的方法，包括使用无源噪声消除产生消除自身干扰信号，并且响应于创建消除自身干扰的步骤，在同一频带上在时间上同时实现全双工同时无线发送和接收 信号。
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