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1. 发明授权

US07899414B2 Control of power amplifiers in devices using transmit beamforming 有权
标题翻译：使用发射波束成形的设备中功率放大器的控制
公开(公告)号：US07899414B2
公开(公告)日：2011-03-01
申请号：US12506813
申请日：2009-07-21
申请人： Gary L. Sugar , Chandra Vaidyanathan , Sifen Luo
发明人： Gary L. Sugar , Chandra Vaidyanathan , Sifen Luo
IPC分类号： H04B1/04
CPC分类号： H04W52/42 , H01Q3/28 , H03G3/3042 , H03G3/3089 , H04B1/0483 , H04B7/0615 , H04B7/0617 , H04B7/0669 , H04B7/0845 , H04B7/0857 , H04L27/2601
摘要： A radio transmitter and method controls efficiency of each of a plurality of power amplifiers that amplify a corresponding one of a plurality of radio frequency signals for a beamforming transmission by a corresponding one of a plurality of antennas. Each of the plurality of power amplifiers is controlled to operate with one or more operating parameters that optimize the efficiency for an output power level of corresponding ones of the radio frequency signals. Transmit weights for transmit signals are determined and updated on a per-packet basis.
摘要翻译：无线电发射机和方法控制多个功率放大器中的每一个的效率，所述功率放大器通过多个天线中的相应一个放大用于波束成形传输的多个射频信号中的相应一个。多个功率放大器中的每一个被控制为利用一个或多个操作参数进行操作，该操作参数优化对应的一个射频信号的输出功率电平的效率。基于每个分组确定和更新发送信号的发送权重。

2. 发明申请

US20110026630A1 Power Allocation of Spatial Streams in MIMO Wireless Communication System 有权
标题翻译： MIMO无线通信系统中空间流的功率分配
公开(公告)号：US20110026630A1
公开(公告)日：2011-02-03
申请号：US12828574
申请日：2010-07-01
申请人： Paul J. Stager , Gary L. Sugar , Matthew A. Silverman , Zhigang Gao , Chandra Vaidyanathan
发明人： Paul J. Stager , Gary L. Sugar , Matthew A. Silverman , Zhigang Gao , Chandra Vaidyanathan
IPC分类号： H04B7/02 , H04L27/00
CPC分类号： H04B7/0617 , H04B7/0439 , H04L27/2601
摘要： Multiple-input multiple-output (MIMO) wireless communication techniques are provided that involve mapping multiple spatial streams to corresponding modes of a wireless channel between a plurality of antennas of a first wireless communication device and a plurality of antennas of a second wireless communication device so as to allocate or distribute power unequally to the plurality of modes. In addition, techniques are provided herein to cyclically shift a mapping of spatial streams to modes of the channel.
摘要翻译：提供了多输入多输出（MIMO）无线通信技术，其涉及将多个空间流映射到第一无线通信设备的多个天线与第二无线通信设备的多个天线之间的无线信道的相应模式，从而用于分配或分配权力不等于多个模式。此外，本文提供了将空间流的映射循环移位到信道的模式的技术。

3. 发明授权

US07881674B2 System and method for antenna diversity using equal power joint maximal ratio combining 有权
标题翻译：使用等功率联合最大比组合的天线分集的系统和方法
公开(公告)号：US07881674B2
公开(公告)日：2011-02-01
申请号：US11879156
申请日：2007-07-16
申请人： Gary L. Sugar , Chandra Vaidyanathan
发明人： Gary L. Sugar , Chandra Vaidyanathan
IPC分类号： H04B7/02
CPC分类号： H04L25/0204 , H01Q3/28 , H03G3/3042 , H03G3/3089 , H04B1/0483 , H04B7/0465 , H04B7/0615 , H04B7/0617 , H04B7/0669 , H04B7/0671 , H04B7/0837 , H04B7/0845 , H04B7/0854 , H04B7/0857 , H04L1/06 , H04L5/0023 , H04L27/2601 , H04L2025/03445 , H04W52/42
摘要： An equal gain composite beamforming technique which includes the constraint that the power of the signal output by each antenna is the same, and is equal to the total power of the transmit signal divided by the number N of transmit antennas from which the signal is to be transmitted. By reducing output power requirements for each power amplifier, the silicon area of the power amplifiers are reduced by as much as N times (where N is equal to the number of transmit antennas) relative to a non-equal gain composite beamforming technique.
摘要翻译：等增益复合波束形成技术，其包括由每个天线输出的信号的功率相同的约束，并且等于发射信号的总功率除以信号将从其发射天线的数量N 传输。通过降低每个功率放大器的输出功率需求，功率放大器的硅面积相对于不相等的增益复合波束形成技术减少了N倍（其中N等于发射天线的数量）。

4. 发明申请

US20090291657A1 Sharing AGC Loop Between Demodulator and Spectrum Analysis System 有权
标题翻译：在解调器和频谱分析系统之间共享AGC环路
公开(公告)号：US20090291657A1
公开(公告)日：2009-11-26
申请号：US12125563
申请日：2008-05-22
申请人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
发明人： David Kloper , Yohannes Tesfai , Chandra Vaidyanathan
IPC分类号： H04B1/06
CPC分类号： H03G3/3078 , H03G3/3068
摘要： Systems and methods for sharing an AGC loop between a wireless data demodulator and a spectrum analysis module that operates simultaneously with the data demodulator. In one embodiment, a predetermined hold time prevents the AGC loop from changing gain too often, thereby allowing the spectrum analysis module to collect reliable data. In another embodiment, the hold time may be extended to coincide with a spectrum analysis event, such as a boundary of an FFT block. In still another embodiment, an FFT valid signal is provided such that collected FFT blocks can be designated as suspect and then subsequently processed accordingly.
摘要翻译：用于在无线数据解调器和与数据解调器同时工作的频谱分析模块之间共享AGC环路的系统和方法。在一个实施例中，预定的保持时间防止AGC环路频繁地改变增益，从而允许频谱分析模块收集可靠的数据。在另一个实施例中，保持时间可以被扩展以与诸如FFT块的边界的频谱分析事件一致。在另一个实施例中，提供FFT有效信号，使得收集的FFT块可以被指定为可疑，然后相应地进行处理。

5. 发明申请

US20090285331A1 CONTROL OF POWER AMPLIFIERS IN DEVICES USING TRANSMIT BEAMFORMING 有权
标题翻译：使用发射波束对设备中的功率放大器进行控制
公开(公告)号：US20090285331A1
公开(公告)日：2009-11-19
申请号：US12506813
申请日：2009-07-21
申请人： Gary L. Sugar , Chandra Vaidyanathan , Sifen Luo
发明人： Gary L. Sugar , Chandra Vaidyanathan , Sifen Luo
IPC分类号： H04L25/03
CPC分类号： H04W52/42 , H01Q3/28 , H03G3/3042 , H03G3/3089 , H04B1/0483 , H04B7/0615 , H04B7/0617 , H04B7/0669 , H04B7/0845 , H04B7/0857 , H04L27/2601
摘要： A radio transmitter and method controls efficiency of each of a plurality of power amplifiers that amplify a corresponding one of a plurality of radio frequency signals for a beamforming transmission by a corresponding one of a plurality of antennas. Each of the plurality of power amplifiers is controlled to operate with one or more operating parameters that optimize the efficiency for an output power level of corresponding ones of the radio frequency signals. Transmit weights for transmit signals are determined and updated on a per-packet basis.
摘要翻译：无线电发射机和方法控制多个功率放大器中的每一个的效率，所述功率放大器通过多个天线中的相应一个放大用于波束成形传输的多个射频信号中的相应一个。多个功率放大器中的每一个被控制为利用一个或多个操作参数进行操作，该操作参数优化对应的一个射频信号的输出功率电平的效率。基于每个分组确定和更新发送信号的发送权重。

6. 发明授权

US07236750B2 Techniques for correcting for phase and amplitude offsets in a MIMO radio device 失效
标题翻译：用于校正MIMO无线电设备中的相位和幅度偏移的技术
公开(公告)号：US07236750B2
公开(公告)日：2007-06-26
申请号：US10859255
申请日：2004-06-02
申请人： Chandra Vaidyanathan , Gary L. Sugar
发明人： Chandra Vaidyanathan , Gary L. Sugar
IPC分类号： H04B1/40
CPC分类号： H04B7/04 , H01Q3/2605 , H04B1/0003 , H04B1/0475 , H04B1/0483 , H04B17/21
摘要： Techniques to correct for phase and amplitude mismatches in a radio device in order to maintain channel symmetry when communicating with another device using MIMO radio communication techniques. Correction for the amplitude and phase mismatches among the plurality of transmitters and plurality of receivers of a device may be made at baseband using digital logic (such as in the modem) in the receiver path, the transmitter path or both paths of that device. In a device, amplitude and phase offsets are determined among the plurality of radio transmitter and radio receiver paths by measuring phase and amplitude responses when supplying a signal to a transmitter in a first antenna path of the device and coupling the radio signal from a first antenna to a second antenna path of that device where the signal is downconverted by a receiver associated with the second antenna path, and similarly coupling a signal from the second antenna path to the first antenna path. Measurements are obtained between the first antenna path and each of the other antenna paths when coupling a signal in both directions between them. Phase and amplitude offset correction values are computed from the phase and amplitude measurements during a self-calibration operation or mode of the device, and are used during a run-time operation or mode when processing the baseband transmit and/or receive signals to compensate for the phase and amplitude offsets among the plurality of transceiver paths of a device. Amplitude offset correction may not be necessary (or optional) for certain radio implementations or MIMO radio algorithms. The device may execute the self-calibration mode on device power-up, and then periodically thereafter. Self-calibration may also be performed at the factory on a device.
摘要翻译：用于校正无线电设备中的相位和幅度失配的技术，以便在使用MIMO无线电通信技术与另一设备通信时保持信道对称性。在设备的多个发射机和多个接收机之间的幅度和相位不匹配的校正可以使用数字逻辑（例如在调制解调器中）在接收机路径，发射机路径或该设备的两个路径中进行。在设备中，通过在设备的第一天线路径中向发射机提供信号并且将来自第一天线的无线电信号耦合时测量相位和幅度响应，在多个无线电发射机和无线电接收机路径中确定幅度和相位偏移到该设备的第二天线路径，其中信号由与第二天线路径相关联的接收机下变频，并且类似地将来自第二天线路径的信号耦合到第一天线路径。当在它们之间的两个方向上耦合信号时，在第一天线路径和每个其他天线路径之间获得测量。在设备的自校准操作或模式期间，从相位和幅度测量中计算相位和幅度偏移校正值，并且在处理基带发射和/或接收信号的运行时操作或模式期间使用相位和振幅偏移校正值，以补偿设备的多个收发器路径之间的相位和幅度偏移。某些无线电实现或MIMO无线电算法可能不需要（或可选）幅度偏移校正。设备可以在设备上电时执行自校准模式，然后定期执行。自校准也可以在工厂在设备上进行。

7. 发明授权

US07194237B2 System and method for multiple-input multiple-output (MIMO) radio communication 有权
标题翻译：用于多输入多输出（MIMO）无线电通信的系统和方法
公开(公告)号：US07194237B2
公开(公告)日：2007-03-20
申请号：US10627537
申请日：2003-07-25
申请人： Gary L. Sugar , Chandra Vaidyanathan
发明人： Gary L. Sugar , Chandra Vaidyanathan
IPC分类号： H04B1/02 , H04M1/00
CPC分类号： H04B7/0434 , H04B7/0465 , H04B7/0615 , H04B7/0697
摘要： A system, method and device for MIMO radio communication of multiple signals between a first device having N plurality of antennas and a second device having M plurality of antennas. At the first device, a vector s representing L signals [s1 . . . sL] to be transmitted is processed with a transmit matrix A to maximize capacity of the channel between the first device and the second device subject to a power constraint that the power emitted by each of the N antennas is less than or equal to a maximum power. The power constraint for each antenna may be the same for all antennas or specific or different for each antenna. For example, the power constraint for each antenna may be equal to a total maximum power emitted by all of the N antennas combined divided by N. The transmit matrix A distributes the L signals [s1 . . . sL] among the N plurality of antennas for simultaneous transmission to the second device. At the second device, the signals received by the M plurality of antennas are processed with receive weights and the resulting signals are combined to recover the L signals.
摘要翻译：一种用于在具有N个多个天线的第一设备和具有M个多个天线的第二设备之间的多个信号的MIMO无线电通信的系统，方法和设备。在第一设备处，表示L个信号[s 1]的向量s。。。要发送的信号将被发送矩阵A处理，以使第一设备和第二设备之间的信道的容量达到最大限度的功率约束，N个天线中的每一个发射的功率是小于或等于最大功率。每个天线的功率约束对于所有天线可以是相同的，对于每个天线可以是特定的或不同的。例如，每个天线的功率约束可以等于由N个天线组合所发射的总和最大功率除以N。发射矩阵A分配L个信号[s 1]。。。在N个多个天线之间用于同时发送到第二设备。在第二设备处，由M个多个天线接收的信号用接收权重进行处理，并将所得到的信号组合以恢复L个信号。

8. 发明申请

US20060258403A1 Compensation techniques for group delay effects in transmit beamforming radio communication 失效
标题翻译：发射波束成形无线电通信中群延迟效应的补偿技术
公开(公告)号：US20060258403A1
公开(公告)日：2006-11-16
申请号：US11487242
申请日：2006-07-14
申请人： Chandra Vaidyanathan
发明人： Chandra Vaidyanathan
IPC分类号： H04B1/02 , H04M1/00 , H04B7/02
CPC分类号： H04B7/043 , H04B7/0434 , H04B7/0443 , H04B7/0465 , H04B7/0617
摘要： In a wireless communication device, transmit weights are iteratively processed to compensate for any group delay caused by receive synchronization in the receive device. A transmit matrix of weights is computed from signals transmitted by a second communication device and received at a plurality of antennas of the first communication device. The transmit matrix processing includes normalizing a transmit weight vector with respect to a mode of the transmit weight associated with one of the plurality of antennas. The processed transmit matrix is then applied to a transmit signal to produce a plurality of transmit signals to be simultaneously transmitted from corresponding ones of the plurality of antennas of the first communication device. A plurality of eigenmodes is transmitted accordingly between the two devices in a converging iteration.
摘要翻译：在无线通信设备中，迭代地处理发送权重以补偿由接收设备中的接收同步引起的任何组延迟。由第二通信设备发送的信号并在第一通信设备的多个天线处接收的信号来计算加权的发送矩阵。发射矩阵处理包括相对于与多个天线之一相关联的发射权重的模式归一化发射权重向量。然后将经处理的发射矩阵应用于发射信号以产生要从第一通信设备的多个天线中的相应天线同时发射的多个发射信号。在聚合迭代中，相应地在两个设备之间传输多个本征模。

9. 发明授权

US07079870B2 Compensation techniques for group delay effects in transmit beamforming radio communication 失效
标题翻译：发射波束成形无线电通信中群延迟效应的补偿技术
公开(公告)号：US07079870B2
公开(公告)日：2006-07-18
申请号：US10779269
申请日：2004-02-13
申请人： Chandra Vaidyanathan
发明人： Chandra Vaidyanathan
IPC分类号： H04M1/00
CPC分类号： H04B7/043 , H04B7/0434 , H04B7/0443 , H04B7/0465 , H04B7/0617
摘要： In a beamforming communication device, transmit weight vectors are iteratively processed to compensate for any group delay caused by receive synchronization in the receive device. The initial transmit weights are computed from signals transmitted by a second communication device and received at a plurality of antennas of the first communication device. The transmit weight processing includes normalizing a transmit weight vector with respect to an element of the transmit weight vector associated with one of the plurality of antennas. The processed transmit weight vectors are then applied to a transmit signal to produce a plurality of transmit signals to be simultaneously transmitted from corresponding ones of the plurality of antennas of the first communication device. These group delay compensation techniques may be extended to a vector beamforming system in which a plurality of eigenmodes is transmitted between the two devices.
摘要翻译：在波束成形通信设备中，迭代地处理发射权重向量以补偿由接收设备中的接收同步引起的任何组延迟。初始发射权重由第二通信设备发送的信号计算，并在第一通信设备的多个天线处接收。发射权重处理包括对与多个天线之一相关联的发射权重向量的元素对发射权重向量进行归一化。然后将经处理的发射权重向量应用于发射信号，以产生要从第一通信设备的多个天线中的相应天线同时传输的多个发射信号。这些组延迟补偿技术可以扩展到其中在两个设备之间传送多个本征模式的向量波束成形系统。

10. 发明授权

US06965762B2 System and method for antenna diversity using joint maximal ratio combining 失效
标题翻译：使用联合最大比组合的天线分集的系统和方法
公开(公告)号：US06965762B2
公开(公告)日：2005-11-15
申请号：US10695229
申请日：2003-10-28
申请人： Gary L. Sugar , Chandra Vaidyanathan , Yohannes Tesfai
发明人： Gary L. Sugar , Chandra Vaidyanathan , Yohannes Tesfai
IPC分类号： H01Q3/28 , H03G3/30 , H04B1/04 , H04B7/005 , H04B7/04 , H04B7/06 , H04B7/08 , H04L1/06 , H04L25/02 , H04L25/03 , H04L27/26 , H04B1/06 , H04B1/10 , H04B7/00 , H04B15/00 , H04B17/00
CPC分类号： H04L5/0007 , H01Q3/28 , H03G3/3042 , H03G3/3089 , H04B1/0483 , H04B7/0417 , H04B7/0615 , H04B7/0617 , H04B7/0669 , H04B7/0671 , H04B7/0845 , H04B7/0848 , H04B7/0854 , H04B7/0857 , H04L1/06 , H04L25/0204 , H04L25/0228 , H04L25/0242 , H04L25/03343 , H04L27/2602 , H04L27/2626 , H04L2025/03426 , H04L2025/03611 , H04W52/42
摘要： A composite beamforming technique is provided wherein a first communication device has a plurality of antennas and the second communication has a plurality of antennas. When the first communication device transmits to the second communication device, the transmit signal is multiplied by a transmit weight vector for transmission by each the plurality of antennas and the transmit signals are received by the plurality of antennas at the second communication device. The second communication device determines the best receive weight vector for the its antennas, and from that vector, derives a suitable transmit weight vector for transmission on the plurality of antennas back to the first communication device. Several techniques are provided to determine the optimum transmit weight vector and receive weight vector for communication between the first and second communication devices so that there is effectively joint or composite beamforming between the communication devices.
摘要翻译：提供一种组合波束形成技术，其中第一通信设备具有多个天线，并且第二通信具有多个天线。当第一通信设备向第二通信设备发送时，将发送信号乘以用于由多个天线中的每一个发送的发送权重向量，并且在第二通信设备处由多个天线接收发送信号。第二通信设备确定其天线的最佳接收权重向量，并且从该向量导出用于在多个天线上发送回到第一通信设备的合适的发射权重向量。提供了几种技术来确定用于第一和第二通信设备之间的通信的最佳发送权重向量和接收权重向量，使得在通信设备之间有效地进行联合或合成波束形成。

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