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61. 发明授权

US08774708B2 Estimation of repeater loop delay for repeater gain control 失效
标题翻译：用于中继器增益控制的中继器回路延迟的估计
公开(公告)号：US08774708B2
公开(公告)日：2014-07-08
申请号：US13372385
申请日：2012-02-13
申请人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore
发明人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore
IPC分类号： H04B7/14
CPC分类号： H04B7/15578 , H04B7/15535
摘要： Methods and apparatus for estimating a loop delay value (Ndelay) in an interference cancellation repeater are presented. For example, a method may include setting a repeater gain to an initial gain value, setting a delay parameter to an initial time value, and measuring a loop gain associated with the delay parameter and the repeater gain by detecting a feedback signal with an echo canceller disabled. The method may further include determining whether the measured loop gain is larger than a previously measured loop gain, and if so, designating the delay parameter as the loop delay value (Ndelay); and decrementing the delay parameter when the measured loop gain is not larger than the previously measured loop gain, and when the delay parameter is not at a final time value. The method may iterate until the delay parameter is less than or equal to the final time value.
摘要翻译：提出了一种用于估计干扰消除中继器中的环路延迟值（Ndelay）的方法和装置。例如，一种方法可以包括将中继器增益设置为初始增益值，将延迟参数设置为初始时间值，以及通过用回波消除器检测反馈信号来测量与延迟参数和中继器增益相关联的环路增益残疾人士该方法还可以包括确定测量的环路增益是否大于先前测量的环路增益，如果是，则将延迟参数指定为环路延迟值（Ndelay）; 并且当测量的环路增益不大于先前测量的环路增益时，以及当延迟参数不在最终时间值时，递减延迟参数。该方法可以迭代，直到延迟参数小于或等于最终时间值。

62. 发明授权

US08542623B2 Use of RF reference in a digital baseband interference cancellation repeater 失效
标题翻译：在数字基带干扰消除中继器中使用RF参考
公开(公告)号：US08542623B2
公开(公告)日：2013-09-24
申请号：US12686608
申请日：2010-01-13
申请人： James A. Proctor, Jr. , Kenneth M. Gainey , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
发明人： James A. Proctor, Jr. , Kenneth M. Gainey , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
IPC分类号： H04J1/10
CPC分类号： H04B7/15585 , H04B1/525
摘要： A wireless repeater includes an echo canceller to cancel an estimated feedback amount from an input signal and a reference receiver to sample a portion of the transmit signal prior to over-the-air transmission for use as the reference signal for channel estimation. More accurate channel estimation is obtained by using the reference signal from the reference receiver as the reference signal accounts for distortions in the transmitter circuit of the repeater.
摘要翻译：无线中继器包括回波消除器，以从输入信号和参考接收器消除估计的反馈量，以在空中传输之前对发射信号的一部分进行采样，以用作信道估计的参考信号。通过使用来自参考接收机的参考信号获得更精确的信道估计，因为参考信号考虑了中继器的发射机电路中的失真。

63. 发明授权

US08385818B2 Delay control to improve frequency domain channel estimation in an echo cancellation repeater 有权
标题翻译：延迟控制，以改善回波消除中继器中的频域信道估计
公开(公告)号：US08385818B2
公开(公告)日：2013-02-26
申请号：US12609796
申请日：2009-10-30
申请人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , James Arthur Proctor, Jr. , Kenneth M. Gainey
发明人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , James Arthur Proctor, Jr. , Kenneth M. Gainey
IPC分类号： H04Q7/32
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： A wireless repeater has a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal where the input signal is a sum of a remote signal and a feedback signal. The repeater includes an echo canceller receiving the input signal and generating an echo cancelled signal by estimating a feedback channel between the transmitting antenna and the receiving antenna and cancelling a feedback signal estimate from the input signal, an amplifier for amplifying the echo cancelled signal and providing the amplified signal to the transmitting antenna, and a variable delay element receiving the echo cancelled signal and introducing a first delay to the echo cancelled signal. The first delay is selected to optimize the estimation of the feedback channel, thereby optimizing the cancellation of the feedback signal. The delayed echo cancelled signal is coupled to the echo canceller as a reference signal for estimating the feedback channel.
摘要翻译：无线中继器具有用于接收输入信号的接收天线和用于发送放大信号的发送天线，其中输入信号是远程信号和反馈信号之和。中继器包括回波消除器，其接收输入信号并通过估计发射天线和接收天线之间的反馈信道并从输入信号中消除反馈信号估计来产生回波消除信号，放大器用于放大回波消除信号并提供向发射天线的放大信号，以及接收回声消除信号的可变延迟元件，并向回波消除信号引入第一延迟。选择第一延迟以优化反馈信道的估计，从而优化反馈信号的消除。延迟回波消除信号耦合到回波消除器作为用于估计反馈信道的参考信号。

64. 发明申请

US20110235568A1 REPEATER-ASSISTED MANAGEMENT OF MACRO NETWORK COVERAGE 有权
标题翻译：宏观网络覆盖的重新辅助管理
公开(公告)号：US20110235568A1
公开(公告)日：2011-09-29
申请号：US13069234
申请日：2011-03-22
申请人： Eduardo S. Esteves , Dhananjay Ashok Gore , Mahesh A. Makhijani
发明人： Eduardo S. Esteves , Dhananjay Ashok Gore , Mahesh A. Makhijani
IPC分类号： H04B7/14
CPC分类号： H04B7/15528 , H04B7/15507 , H04B7/15535 , H04B7/1555 , H04B7/15578 , H04B7/2606 , H04W16/00 , H04W16/26 , H04W24/02 , H04W84/047
摘要： A method of managing macro network coverage among a plurality of repeaters deployed to extend coverage of one or more base stations may include receiving feedback information from at least two repeaters indicative of macro network coverage at locations corresponding to each repeater, determining a coverage status of the macro network based on the feedback information, and sending a control signal to at least one repeater instructing the repeater to adjust one or more operating parameters based on the determined coverage status.
摘要翻译：在部署以扩展一个或多个基站的覆盖范围的多个中继器之间管理宏网络覆盖的方法可以包括从至少两个中继器接收指示在与每个中继器相对应的位置处的宏网络覆盖的反馈信息，确定基于所述反馈信息的宏网络，以及基于所确定的覆盖状态，向至少一个中继器发送控制信号，指示所述中继器调整一个或多个操作参数。

65. 发明申请

US20100285742A1 GAIN CONTROL METRIC PRUNING IN A WIRELESS REPEATER 有权
标题翻译：在无线重发器中增益控制公制
公开(公告)号：US20100285742A1
公开(公告)日：2010-11-11
申请号：US12722760
申请日：2010-03-12
申请人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore
发明人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore
IPC分类号： H04B7/14
CPC分类号： H04B7/15578
摘要： A method for controlling gain in a wireless repeater includes computing a gain control metric indicative of a loop gain of the repeater and detecting changes in a signal power of a gain control input signal where the gain control input signal is taken from any point in the feedback loop of the repeater. When a large power swing in the gain control input signal is detected, the method operates to discard at least a portion of each gain control metric measurement for a first duration before continuing with computing the gain control metric. In another embodiment, the method may include discarding samples of the gain control input signal used in computing the gain control metric for a first duration when a large power swing in the gain control input signal is detected.
摘要翻译：一种用于控制无线中继器中的增益的方法包括：计算表示中继器的环路增益的增益控制度量，并且检测增益控制输入信号的信号功率的变化，其中增益控制输入信号是从反馈中的任何点中继器的回路。当检测到增益控制输入信号中的大功率摆幅时，该方法在继续计算增益控制度量之前，在第一持续时间内丢弃每个增益控制度量测量的至少一部分。在另一实施例中，当检测到增益控制输入信号中的大功率摆幅时，该方法可以包括丢弃用于计算增益控制度量的增益控制输入信号的采样，该第一持续时间。

66. 发明申请

US20100285738A1 SIGNAL BLANKING FOR IMPROVED FREQUENCY DOMAIN CHANNEL ESTIMATION 有权
标题翻译：用于改进的频域信道估计的信号空白
公开(公告)号：US20100285738A1
公开(公告)日：2010-11-11
申请号：US12708318
申请日：2010-02-18
申请人： Steven J. Howard , Tadeusz Jarosinski , Dhananjay Ashok Gore , Gwendolyn Denise Barriac , Michael Mao Wang , Tao Tian
发明人： Steven J. Howard , Tadeusz Jarosinski , Dhananjay Ashok Gore , Gwendolyn Denise Barriac , Michael Mao Wang , Tao Tian
IPC分类号： H04B17/02
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： A wireless repeater includes a channel estimation block to estimate a feedback channel between the antennas of the repeater using frequency domain channel estimation. The repeater includes a pilot signal blanking circuit to blank out a selected number of samples of the pilot signal to improve the accuracy of the channel estimation. In another embodiment, the repeater replaces T samples of the pilot signal with a cyclic prefix.
摘要翻译：无线中继器包括信道估计块，用于使用频域信道估计来估计中继器的天线之间的反馈信道。中继器包括导频信号消隐电路，用于消除导频信号的选定数目的样本，以提高信道估计的精度。在另一个实施例中，中继器用循环前缀替换导频信号的T个样本。

67. 发明申请

US20100285733A1 WIDEBAND ECHO CANCELLATION IN A REPEATER 失效
标题翻译：一个重复的宽带ECHO取消
公开(公告)号：US20100285733A1
公开(公告)日：2010-11-11
申请号：US12609505
申请日：2009-10-30
申请人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , James Arthur Proctor, JR. , Steven J. Howard , Hakan Inanoglu , Kenneth M. Gainey , Michael Mao Wang , Tao Tian
发明人： Dhananjay Ashok Gore , Gwendolyn Denise Barriac , James Arthur Proctor, JR. , Steven J. Howard , Hakan Inanoglu , Kenneth M. Gainey , Michael Mao Wang , Tao Tian
IPC分类号： H04B7/14
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： A wireless repeater having a receiving antenna for receiving an input signal and a transmitting antenna for transmitting an amplified signal includes first and second front-end circuits and a repeater baseband block coupled between the first and second front-end circuits. The repeater baseband block includes a channel estimation block, an echo canceller implementing time domain echo cancellation, a variable gain stage controlled by a gain control block implementing digital gain control, a first variable delay element introducing a first delay before or after the echo canceller, a second variable delay element introducing a second delay to the output signal. The delayed output signal is coupled to the channel estimation block as a reference signal for estimating the feedback channel, to the echo canceller as a reference signal for estimating the feedback signal, and to the gain control block for monitoring the stability of the repeater.
摘要翻译：具有用于接收输入信号的接收天线和用于发送放大信号的发射天线的无线中继器包括耦合在第一和第二前端电路之间的第一和第二前端电路和中继器基带块。中继器基带块包括信道估计块，实现时域回声消除的回波消除器，实现数字增益控制的增益控制块控制的可变增益级，在回波消除器之前或之后引入第一延迟的第一可变延迟元件，向输出信号引入第二延迟的第二可变延迟元件。延迟输出信号作为用于估计反馈信道的参考信号，作为用于估计反馈信号的参考信号的回波消除器和用于监视中继器的稳定性的增益控制块耦合到信道估计块。

68. 发明申请

US20080298452A1 FAST SQUARE ROOT ALGORITHM FOR MIMO EQUALIZATION 失效
标题翻译：用于MIMO均衡的快速平方根算法
公开(公告)号：US20080298452A1
公开(公告)日：2008-12-04
申请号：US12041616
申请日：2008-03-03
申请人： Hemanth Sampath , Dhananjay Ashok Gore , Edward Harrison Teague
发明人： Hemanth Sampath , Dhananjay Ashok Gore , Edward Harrison Teague
IPC分类号： H04L27/01
CPC分类号： H04B7/0413 , 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。

69. 发明授权

US08886115B2 Gain control metric pruning in a wireless repeater 有权
标题翻译：无线中继器中增益控制公制修剪
公开(公告)号：US08886115B2
公开(公告)日：2014-11-11
申请号：US12722760
申请日：2010-03-12
申请人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore
发明人： Michael Mao Wang , Gwendolyn Denise Barriac , Dhananjay Ashok Gore
IPC分类号： H04B7/14 , H04B7/155
CPC分类号： H04B7/15578
摘要： A method for controlling gain in a wireless repeater includes computing a gain control metric indicative of a loop gain of the repeater and detecting changes in a signal power of a gain control input signal where the gain control input signal is taken from any point in the feedback loop of the repeater. When a large power swing in the gain control input signal is detected, the method operates to discard at least a portion of each gain control metric measurement for a first duration before continuing with computing the gain control metric. In another embodiment, the method may include discarding samples of the gain control input signal used in computing the gain control metric for a first duration when a large power swing in the gain control input signal is detected.
摘要翻译：一种用于控制无线中继器中的增益的方法包括：计算表示中继器的环路增益的增益控制度量，并且检测增益控制输入信号的信号功率的变化，其中增益控制输入信号是从反馈中的任何点中继器的回路。当检测到增益控制输入信号中的大功率摆幅时，该方法在继续计算增益控制度量之前，在第一持续时间内丢弃每个增益控制度量测量的至少一部分。在另一实施例中，当检测到增益控制输入信号中的大功率摆幅时，该方法可以包括丢弃用于计算增益控制度量的增益控制输入信号的采样，该第一持续时间。

70. 发明授权

US08737911B2 Dual-stage echo cancellation in a wireless repeater using an inserted pilot 有权
标题翻译：使用插入导频的无线中继器中的双级回波消除
公开(公告)号：US08737911B2
公开(公告)日：2014-05-27
申请号：US12609698
申请日：2009-10-30
申请人： Peter John Black , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
发明人： Peter John Black , Dhananjay Ashok Gore , Gwendolyn Denise Barriac
IPC分类号： H04B3/36
CPC分类号： H04B7/15535 , H04B7/15585 , H04L27/2607 , H04L27/2613
摘要： In one embodiment, a method for providing echo cancellation in a wireless repeater includes: adding the pilot signal to a transmit signal; receiving a receive signal being the sum of a remote signal, a feedback pilot signal and a feedback transmit signal; cancelling the feedback transmit signal from the receive signal using a currently available feedback channel estimate and generating a first echo cancelled signal; generating an updated feedback channel estimate using the first echo cancelled signal and the pilot signal as a reference signal; cancelling the feedback transmit signal and the feedback pilot signal from the receive signal using the updated feedback channel estimate and generating a second echo cancelled signal; and amplifying the second echo cancelled signal as the transmit signal. In another embodiment, the feedback pilot signal is cancelled from the first echo cancelled signal using the updated feedback channel estimate to generate the second echo cancelled signal.
摘要翻译：在一个实施例中，一种用于在无线中继器中提供回波消除的方法包括：将导频信号添加到发射信号; 接收作为远程信号，反馈导频信号和反馈发送信号之和的接收信号; 使用当前可用的反馈信道估计从所述接收信号中消除所述反馈发射信号并产生第一回波消除信号; 使用所述第一回波消除信号和所述导频信号作为参考信号产生更新的反馈信道估计; 使用更新的反馈信道估计从接收信号中消除反馈发射信号和反馈导频信号，并产生第二回波消除信号; 并且将第二回波消除信号放大为发送信号。在另一个实施例中，使用更新的反馈信道估计从第一回波消除信号中消除反馈导频信号以产生第二回波消除信号。

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