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1. 发明授权

US08204014B2 Method and system for codebook-based closed-loop MIMO using common pilots and analog feedback 有权
标题翻译：使用公共导频和模拟反馈的基于码本的闭环MIMO的方法和系统
公开(公告)号：US08204014B2
公开(公告)日：2012-06-19
申请号：US12405307
申请日：2009-03-17
申请人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
发明人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
IPC分类号： H04W4/00 , H04L1/00 , H04L12/26
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0617 , H04B7/0665 , H04L25/0204 , H04L25/0224 , H04L25/03343 , H04L2025/03414 , H04L2025/03808
摘要： A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.
摘要翻译：公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。移动台可以使用反馈信道向基站发送探测波形，从基站接收来自发送探测波形的码本的前馈信道，从基站接收通信的接收机和处理器检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。基站处理探测波形以确定子载波组上的码本权重。此外，基站将波束形成的有效载荷和广播导频发送到移动台。

2. 发明申请

US20090238303A1 METHOD AND SYSTEM FOR CODEBOOK-BASED CLOSED-LOOP MIMO USING COMMON PILOTS AND ANALOG FEEDBACK 有权
标题翻译：使用通用引导和模拟反馈的基于代码库的闭环MIMO的方法和系统
公开(公告)号：US20090238303A1
公开(公告)日：2009-09-24
申请号：US12405307
申请日：2009-03-17
申请人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
发明人： Bishwarup Mondal , Kevin L. Baum , Amitabha Ghosh , Timothy Thomas , Frederick Vook , Fan Wang
IPC分类号： H04L27/00 , H04L27/06
CPC分类号： H04L5/005 , H04B7/0417 , H04B7/0617 , H04B7/0665 , H04L25/0204 , H04L25/0224 , H04L25/03343 , H04L2025/03414 , H04L2025/03808
摘要： A method and system that enables the usage of sounding-based feedback or analog feedback in a MIMO communication system with non-beamformed or broadcast pilot symbols is disclosed. The mobile station may employ a feedback channel to send a sounding waveform to a base station, a feedforward channel to receive from the base station codebook weights derived from the send sounding waveform, a receiver to receive communication from the base station, and a processor to detect beamformed data from the received communication and received codebook weights from the base station. The base station processes the sounding waveform to determine codebook weights on groups of subcarriers. Additionally, the base station transmits the beamformed payload and broadcast pilots to the mobile station.
摘要翻译：公开了一种能够在具有非波束形成或广播导频符号的MIMO通信系统中使用基于声音的反馈或模拟反馈的方法和系统。移动台可以使用反馈信道向基站发送探测波形，从基站接收来自发送探测波形的码本的前馈信道，从基站接收通信的接收机和处理器检测来自接收到的通信的波束形成的数据和从基站接收的码本权重。基站处理探测波形以确定子载波组上的码本权重。此外，基站将波束形成的有效载荷和广播导频发送到移动台。

3. 发明申请

US20070183362A1 METHOD AND APPARATUS FOR PERFORMING SPATIAL-DIVISION MULTIPLE ACCESS 有权
标题翻译：用于执行空间分割多路访问的方法和装置
公开(公告)号：US20070183362A1
公开(公告)日：2007-08-09
申请号：US11275938
申请日：2006-02-06
申请人： Bishwarup Mondal , Xiangyang Zhuang , Kevin Baum , Timothy Thomas , Frederick Vook
发明人： Bishwarup Mondal , Xiangyang Zhuang , Kevin Baum , Timothy Thomas , Frederick Vook
IPC分类号： H04Q7/00
CPC分类号： H04B7/0617 , H04B7/0452 , H04B7/0634 , H04B7/0639 , Y02D70/444
摘要： A method and apparatus for performing spatial-division multiple access within a communication system is provided herein. During operation, nodes will return null subspace information along with their channel subspace information. The null subspace is similar to the channel subspace except that the null subspace information directs a base station to the matrix in a predefined codebook that results in minimum power being received at the node. The null subspace for each node is taken into consideration when communicating with a particular node.
摘要翻译：本文提供了一种在通信系统内执行空分多址的方法和装置。在运行期间，节点将返回空子空间信息及其信道子空间信息。空子空间类似于信道子空间，除了空子信息将基站指向预定码本中的矩阵，导致节点接收的最小功率。当与特定节点进行通信时，将考虑每个节点的空子空间。

4. 发明授权

US10050686B2 Methods and apparatus for beamforming 有权
公开(公告)号：US10050686B2
公开(公告)日：2018-08-14
申请号：US14424121
申请日：2012-08-31
申请人： Frederick Vook , Amitabha Ghosh , Timothy Thomas
发明人： Frederick Vook , Amitabha Ghosh , Timothy Thomas
IPC分类号： H04B7/04 , H04B7/0456 , H04B7/06 , H04L5/00 , H04W72/04 , H04W72/08 , H04B7/10
摘要： Systems and techniques for carrier aggregated beamforming using elevation control. A base station determines a first elevation to be used for transmission to a user device using a first carrier, for example, based on information received from the user device. A second elevation, for transmission to the user device based on the second carrier, is determined based at least in part on the elevation information determined for the first carrier. The first and second carriers may be used by the same base station or by different base stations, and using elevation information determined for the first carrier to determine elevation information for the second carrier avoids computation and signaling needed for separate determination of the elevation information for the second carrier.

5. 发明申请

US20150215077A1 METHOD, APPARATUS, COMPUTER PROGRAM PRODUCT, COMPUTER READABLE MEDIUM AND SYSTEM FOR FAST FEEDBACK AND RESPONSE HANDLING IN WIRELESS NETWORKS 有权
标题翻译：方法，设备，计算机程序产品，计算机可读介质和无线网络快速反馈和响应处理系统
公开(公告)号：US20150215077A1
公开(公告)日：2015-07-30
申请号：US14417382
申请日：2012-07-27
申请人： Rapeepat Ratasuk , Timothy Thomas , Frederick Vook , Amitabha Ghosh , Mark Cudak
发明人： Rapeepat Ratasuk , Timothy Thomas , Frederick Vook , Amitabha Ghosh , Mark Cudak
IPC分类号： H04L1/18 , H04W72/04 , H04W16/28 , H04W36/26
CPC分类号： H04L1/1812 , H04B7/0617 , H04B7/0623 , H04B7/0695 , H04B7/088 , H04L1/0072 , H04L1/1819 , H04L1/1825 , H04W16/28 , H04W36/26 , H04W72/042
摘要： Communication systems may employ transmission of feedback information and responses thereto, on a wireless connection such as a millimeter wave connection. The feedback information itself may be used to influence the beamforming or beam direction used for the transmission of the feedback information. A method can comprise determining a feedback indicator regarding reception of a transmitted waveform. The method can also comprise tailoring, for example beamforming, a signal for transmitting the feedback indicator based on a content of the feedback indicator.
摘要翻译：在诸如毫米波连接的无线连接上，通信系统可以采用反馈信息及其响应的传输。反馈信息本身可以用于影响用于传送反馈信息的波束形成或波束方向。一种方法可以包括确定关于发送的波形的接收的反馈指示符。该方法还可以包括基于反馈指示符的内容来定制（例如波束成形）用于发送反馈指示符的信号。

6. 发明授权

US09425923B2 Method, apparatus, computer program product, computer readable medium and system for fast feedback and response handling in wireless networks 有权
标题翻译：方法，装置，计算机程序产品，计算机可读介质和系统，用于无线网络中的快速反馈和响应处理
公开(公告)号：US09425923B2
公开(公告)日：2016-08-23
申请号：US14417382
申请日：2012-07-27
申请人： Rapeepat Ratasuk , Timothy Thomas , Frederick Vook , Amitabha Ghosh , Mark Cudak
发明人： Rapeepat Ratasuk , Timothy Thomas , Frederick Vook , Amitabha Ghosh , Mark Cudak
IPC分类号： H04W36/00 , H04L1/18 , H04B7/06 , H04B7/08 , H04W16/28 , H04W36/26 , H04W72/04
CPC分类号： H04L1/1812 , H04B7/0617 , H04B7/0623 , H04B7/0695 , H04B7/088 , H04L1/0072 , H04L1/1819 , H04L1/1825 , H04W16/28 , H04W36/26 , H04W72/042
摘要： Communication systems may employ transmission of feedback information and responses thereto, on a wireless connection such as a millimeter wave connection. The feedback information itself may be used to influence the beamforming or beam direction used for the transmission of the feedback information. A method can comprise determining a feedback indicator regarding reception of a transmitted waveform. The method can also comprise tailoring, for example beamforming, a signal for transmitting the feedback indicator based on a content of the feedback indicator.
摘要翻译：在诸如毫米波连接的无线连接上，通信系统可以采用反馈信息及其响应的传输。反馈信息本身可以用于影响用于传送反馈信息的波束形成或波束方向。一种方法可以包括确定关于发送的波形的接收的反馈指示符。该方法还可以包括基于反馈指示符的内容来定制（例如波束成形）用于发送反馈指示符的信号。

7. 发明申请

US20070281624A1 METHOD AND APPARATUS FOR CHANNEL FEEDBACK 审中-公开
标题翻译：信道反馈的方法和装置
公开(公告)号：US20070281624A1
公开(公告)日：2007-12-06
申请号：US11767590
申请日：2007-06-25
申请人： Timothy Thomas , Kevin Baum , Philippe Sartori , Frederick Vook , Xiangyang Zhuang
发明人： Timothy Thomas , Kevin Baum , Philippe Sartori , Frederick Vook , Xiangyang Zhuang
IPC分类号： H04B17/00
CPC分类号： H04B7/0669 , H04L25/0204 , H04L27/2608
摘要： A method for communicating channel estimates on a plurality of subcarriers between a transmitting device and a receiving device. The transmitting device determines a channel estimates on a plurality of subcarriers and then encodes the channel estimates into at least one encoded channel waveform. Then the transmitting device transmits the at least one encoded channel waveform to the receiving device.
摘要翻译：一种用于在发射设备和接收设备之间的多个子载波上传送信道估计的方法。发送设备确定多个子载波上的信道估计，然后将信道估计编码为至少一个编码信道波形。然后，发送设备将至少一个编码信道波形发送到接收设备。

8. 发明申请

US20070206686A1 Method and apparatus for performing cyclic-shift diversity with beamforming 审中-公开
标题翻译：用波束形成执行循环移位分集的方法和装置
公开(公告)号：US20070206686A1
公开(公告)日：2007-09-06
申请号：US11325876
申请日：2006-01-05
申请人： Frederick Vook , Timothy Thomas , Xiangyang Zhuang
发明人： Frederick Vook , Timothy Thomas , Xiangyang Zhuang
IPC分类号： H04K1/10
CPC分类号： H04B7/0671
摘要： Cyclic-shift diversity transmission and optional per-subcarrier transmit beamforming within a same time interval (e.g., OFDM symbol interval) takes place. The CSD transmission technique circularly shifts the IFFT output prior to any cyclic prefix insertion and has the effect of putting a subcarrier and antenna dependent phase shift in the effective channel response from each transmit antenna. To properly perform transmit adaptive array (TXAA) transmission within an OFDM symbol interval that is being circularly shifted by the CSD transmission technique, the TXAA weights will account for the frequency domain phase shift created by the CSD circular shift operation.
摘要翻译：发生在相同时间间隔（例如，OFDM符号间隔）内的循环移位分集传输和可选的每副载波发射波束形成。 CSD传输技术在任何循环前缀插入之前循环移位IFFT输出，并且具有将每个发射天线的有效信道响应中的副载波和天线相关相移放在有效信道响应中的作用。为了在通过CSD传输技术循环移位的OFDM符号间隔内适当地执行发射自适应阵列（TXAA）传输，TXAA权重将考虑由CSD循环移位操作产生的频域相移。

9. 发明申请

US20060067277A1 Method and apparatus for MIMO transmission optimized for successive cancellation receivers 有权
标题翻译：用于连续取消接收机优化的MIMO传输的方法和装置
公开(公告)号：US20060067277A1
公开(公告)日：2006-03-30
申请号：US11209308
申请日：2005-08-23
申请人： Timothy Thomas , Kevin Baum , Frederick Vook , Xiangyang Zhuang
发明人： Timothy Thomas , Kevin Baum , Frederick Vook , Xiangyang Zhuang
IPC分类号： H04Q7/00
CPC分类号： H04B7/0634 , H04B7/04 , H04B7/0636 , H04B7/0639 , H04B7/066 , H04B7/0691 , H04L27/2601
摘要： A method for communicating a plurality of data streams between a transmitting device with multiple transmit antennas and a receiving device, is disclosed. The method comprises determining a list consisting of a subset of the multiple transmit antennas on which the transmitting device will transmit data, determining a set of power weightings, providing the set of power weightings and the list of the subset of the multiple transmit antennas to the transmitting device, weighting a plurality of data streams by the power weightings, and transmitting the power weighted data streams on the subset of the multiple transmit antennas to the receiving device. Another aspect of the invention comprises maintaining a codebook consisting of a plurality of transmit weight vectors at both the transmitting device and the receiving device. The method also comprises determining a list consisting of a subset of the plurality of transmit weight vectors which to use for transmitting the multiple data streams, determining a set of power weightings to be use for each data stream, providing the set of power weightings and the list of the subset of the plurality of transmit weight vectors to the transmitting device, and weighting the data streams by the power weightings and beamforming the data streams with the subset of the plurality of transmit weight vectors.
摘要翻译：公开了一种在具有多个发射天线的发射装置与接收装置之间传送多个数据流的方法。该方法包括确定由发射设备将在其上发射数据的多个发射天线的子集组成的列表，确定一组功率加权，提供该组功率加权和多个发射天线的子集的列表到发送设备，通过功率加权对多个数据流进行加权，以及将多个发射天线的子集上的功率加权数据流发送到接收设备。本发明的另一方面包括在发送设备和接收设备两者处维护由多个发送权重向量组成的码本。该方法还包括确定由用于发送多个数据流的多个发射权重向量的子集组成的列表，确定要为每个数据流使用的一组功率权重，提供该组功率权重和将多个发射权重向量的子集的列表发送到发射装置，以及通过功率加权对数据流进行加权，并且利用多个发射权重向量的子集对数据流进行波束形成。

10. 发明申请

US20070147533A1 Method and system for aggregate channel estimation for frequency-selective transmit beamforming 审中-公开
标题翻译：频率选择性发射波束成形的聚合信道估计方法和系统
公开(公告)号：US20070147533A1
公开(公告)日：2007-06-28
申请号：US11317382
申请日：2005-12-23
申请人： Timothy Thomas , Frederick Vook , Xiangyang Zhuang
发明人： Timothy Thomas , Frederick Vook , Xiangyang Zhuang
IPC分类号： H04L1/02
CPC分类号： H04L25/025 , H04B7/0617 , H04B7/0619 , H04B7/0689 , H04B7/0697 , H04B17/364 , H04L25/024
摘要： A system (10) and method (50) of operating a wireless communication system between a transmit device (12) employing an array of transmit antennas and a receiver (15) can include transmitting (52) a beamformed signal with antenna weights computed based on knowledge of a plurality of channels forming an aggregate channel and computing (54) a set of characteristics for the aggregate channel such as a power delay profile, a frequency correlation, or an expected beamforming gain of the aggregate channel. Characteristics can also be based on factors among a number of transmit antennas, a beamforming weight application delay value, an expected Doppler profile, or an expected delay profile of the propagation channel. The method can further determine (58) a channel estimator based on the computed set of characteristics, receive (62) the beamformed signal, and compute (64) an aggregate channel estimate as a function of the channel estimator and the beamformed signal.
摘要翻译：在采用发射天线阵列的发射设备（12）和接收机（15）之间操作无线通信系统的系统（10）和方法（50）可以包括：发射（52）波束形成的信号，其中天线权重基于形成聚合信道的多个信道的知识，以及计算（54）聚合信道的一组特征，例如聚合信道的功率延迟分布，频率相关或期望的波束形成增益。特性还可以基于多个发射天线中的因素，波束成形加权应用延迟值，期望的多普勒分布或传播信道的预期延迟分布。该方法可以基于所计算的特征集合进一步确定（58）信道估计器，接收（62）波束形成的信号，并且计算（64）作为信道估计器和波束形成信号的函数的聚合信道估计。

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