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    ECHO CANCELLATION REPEATER OPERATION IN THE ABSENCE OF AN INPUT SIGNAL
    1.
    发明申请
    ECHO CANCELLATION REPEATER OPERATION IN THE ABSENCE OF AN INPUT SIGNAL 审中-公开
    ECHO取消重复操作在输入信号的禁止

    公开(公告)号：WO2013022601A1

    公开(公告)日：2013-02-14

    申请号：PCT/US2012/048091

    申请日：2012-07-25

    Applicant: QUALCOMM INCORPORATED ,  GORE, Dhananjay Ashok ,  BARRIAC, Gwendolyn Denise ,  WANG, Michael Mao ,  TIAN, Tao

    Inventor： GORE, Dhananjay Ashok ,  BARRIAC, Gwendolyn Denise ,  WANG, Michael Mao ,  TIAN, Tao

    IPC: H04B7/155

    CPC classification number: H04B7/15585 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/446

    Abstract: A wireless repeater introduces a low level noise to the signal path of the repeater where the introduced noise is used to facilitate channel estimation. The introduced low power level noise may be added to the receive signal or to the transmit signal. The low power noise signal ensures that the repeater always has a reference signal for performing channel estimation, even when the repeater is not receiving any incoming signal traffic. In one embodiment, a low noise signal is inserted to the transmit circuit of the repeater. In another embodiment, the repeater is configured to increase the noise figure of the receive circuit where the detected noise figure acts as a receive signal.

    Abstract translation: 无线中继器向中继器的信号路径引入低电平噪声，其中引入的噪声用于促进信道估计。 引入的低功率电平噪声可以被添加到接收信号或发送信号。 低功率噪声信号确保中继器总是具有用于执行信道估计的参考信号，即使中继器没有接收任何输入信号业务。 在一个实施例中，低噪声信号被插入到中继器的发射电路。 在另一个实施例中，中继器被配置为增加接收电路的噪声系数，其中检测到的噪声系数作为接收信号。

    BEACON SIGNALS FOR REPEATERS WITHIN A WIRELESS COMMUNICATIONS SYSTEM
    2.
    发明申请
    BEACON SIGNALS FOR REPEATERS WITHIN A WIRELESS COMMUNICATIONS SYSTEM 审中-公开
    用于无线通信系统中的中继器的信标信号

    公开(公告)号：WO2012142339A1

    公开(公告)日：2012-10-18

    申请号：PCT/US2012/033397

    申请日：2012-04-12

    Applicant: QUALCOMM INCORPORATED ,  WANG, Michael Mao ,  GORE, Dhananjay Ashok ,  BARRIAC, Gwendolyn Denise

    Inventor： WANG, Michael Mao ,  GORE, Dhananjay Ashok ,  BARRIAC, Gwendolyn Denise

    IPC: H04W16/26 ,  H04W48/12 ,  H04B7/155

    CPC classification number: H04B7/15528 ,  H04L5/0007 ,  H04W48/10 ,  H04W84/047

    Abstract: In an embodiment, a first repeater configures a beacon signal that identifies the first repeater to one or more other repeaters. The first repeater transmits the configured beacon signal at a given transmission power level to the one or more other repeaters. The transmitted beacon signal is received at least by a second repeater. The second repeater reduces interference associated with other transmissions from the first repeater, such as retransmissions of donor signals, based on the received beacon signal.

    Abstract translation: 在一个实施例中，第一中继器将识别第一中继器的信标信号配置到一个或多个其他中继器。 第一中继器以给定的发射功率电平将配置的信标信号发射到一个或多个其它中继器。 所发送的信标信号至少由第二中继器接收。 第二中继器基于接收到的信标信号来减少与来自第一中继器的其他传输相关联的干扰，例如施主信号的重传。

    DUAL-STAGE ECHO CANCELLATION IN A WIRELESS REPEATER USING AN INSERTED PILOT
    3.
    发明申请
    DUAL-STAGE ECHO CANCELLATION IN A WIRELESS REPEATER USING AN INSERTED PILOT 审中-公开
    使用插入式引导器在无线中继器中进行双级ECHO取消

    公开(公告)号：WO2010132455A3

    公开(公告)日：2011-03-24

    申请号：PCT/US2010034394

    申请日：2010-05-11

    Applicant: QUALCOMM INC ,  BLACK PETER JOHN ,  GORE DHANANJAY ASHOK ,  BARRIAC GWENDOLYN DENISE

    Inventor： BLACK PETER JOHN ,  GORE DHANANJAY ASHOK ,  BARRIAC GWENDOLYN DENISE

    IPC: H04B7/155 ,  H04B17/40

    CPC classification number: H04B7/15535 ,  H04B7/15585 ,  H04L27/2607 ,  H04L27/2613

    Abstract: 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.

    Abstract translation: 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。

    GAIN CONTROL METRIC PRUNING IN A WIRELESS REPEATER
    5.
    发明申请
    GAIN CONTROL METRIC PRUNING IN A WIRELESS REPEATER 审中-公开

    公开(公告)号：WO2010132463A3

    公开(公告)日：2010-11-18

    申请号：PCT/US2010/034403

    申请日：2010-05-11

    Applicant: QUALCOMM INCORPORATED ,  WANG, Michael Mao ,  BARRIAC, Gwendolyn Denise ,  GORE, Dhananjay Ashok

    Inventor： WANG, Michael Mao ,  BARRIAC, Gwendolyn Denise ,  GORE, Dhananjay Ashok

    IPC: H04B7/155

    Abstract: 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.

    GAIN CONTROL METRIC COMPUTATION IN A WIRELESS REPEATER
    6.
    发明申请
    GAIN CONTROL METRIC COMPUTATION IN A WIRELESS REPEATER 审中-公开
    无线重发器增益控制公制计算

    公开(公告)号：WO2011113009A1

    公开(公告)日：2011-09-15

    申请号：PCT/US2011/028210

    申请日：2011-03-11

    Applicant: QUALCOMM INCORPORATED ,  WANG, Michael Mao ,  GORE, Dhananjay Ashok ,  BARRIAC, Gwendolyn Denise

    Inventor： WANG, Michael Mao ,  GORE, Dhananjay Ashok ,  BARRIAC, Gwendolyn Denise

    IPC: H04B7/155

    CPC classification number: H04B7/15585 ,  H04B7/15535

    Abstract: A wireless repeater includes a gain control metric computation block to compute a gain control metric for use in controlling the variable gain of the repeater. The gain control metric is computed by downsampling the gain control input signal to the gain control metric computation block and also downsampling the computed correlation and normalization terms. The gain control metric may be further enhanced by filtering the computed metric values using linear or non-linear filtering.

    Abstract translation: 无线中继器包括增益控制度量计算块，用于计算用于控制中继器的可变增益的增益控制度量。 通过将增益控制输入信号下采样到增益控制度量计算块来计算增益控制度量，并且还对所计算的相关和归一化项进行下采样。 可以通过使用线性或非线性滤波来过滤所计算的度量值来进一步增强增益控制度量。

    FREQUENCY DOMAIN CHANNEL ESTIMATION FOR WIRELESS REPEATERS
    7.
    发明申请
    FREQUENCY DOMAIN CHANNEL ESTIMATION FOR WIRELESS REPEATERS 审中-公开
    无线中继器的频域信道估计

    公开(公告)号：WO2010132475A8

    公开(公告)日：2011-06-16

    申请号：PCT/US2010034416

    申请日：2010-05-11

    Applicant: QUALCOMM INC ,  GORE DHANANJAY ASHOK ,  BARRIAC GWENDOLYN DENISE ,  HOWARD STEVEN J

    Inventor： GORE DHANANJAY ASHOK ,  BARRIAC GWENDOLYN DENISE ,  HOWARD STEVEN J

    IPC: H04L25/02 ,  H04B7/155

    CPC classification number: H04L25/022 ,  H04B7/15585 ,  H04L25/0226

    Abstract: A method for estimating a feedback channel for a wireless repeater uses frequency domain channel estimation and uses a signal indicative of the amplified signal as a pilot signal. The channel estimation method generates a time domain feedback channel estimate from the frequency domain channel estimation and scales the time domain feedback channel estimate using scaling factors. In one embodiment, the scaling factors are function of a tap index and the block size of the frequency domain channel estimation.

    Abstract translation: 用于估计无线中继器的反馈信道的方法使用频域信道估计，并且使用表示放大的信号的信号作为导频信号。 信道估计方法从频域信道估计生成时域反馈信道估计，并使用缩放因子来缩放时域反馈信道估计。 在一个实施例中，缩放因子是抽头索引和频域信道估计的块大小的函数。

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