利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

127 条记录 (耗时 0.031 秒)

    Removal of ICI/ISI errors in frequency domain channel estimation for wireless repeaters
    1.
    发明授权
    Removal of ICI/ISI errors in frequency domain channel estimation for wireless repeaters 有权
    去除无线中继器的频域信道估计中的ICI / ISI误差

    公开(公告)号：US09049065B2

    公开(公告)日：2015-06-02

    申请号：US12776998

    申请日：2010-05-10

    申请人： Gwendolyn Denise Barriac ,  Steven J. Howard ,  Dhananjay Ashok Gore

    发明人： Gwendolyn Denise Barriac ,  Steven J. Howard ,  Dhananjay Ashok Gore

    IPC分类号： H04W24/00 ,  H04L25/02 ,  H04B7/155

    CPC分类号： H04L25/0226 ,  H04B7/15585 ,  H04L25/022 ,  H04L25/0242

    摘要： A method for estimating a feedback channel for a wireless repeater using frequency domain channel estimation estimates an error correction term using a most recent channel estimate and cancels the error correction term from a current block of the receive signal. Then, the feedback channel is estimated using frequency domain channel estimation and using a current block of the pilot signal and the corrected block of the receive signal. A channel estimate error term may also be estimated and subtracted directly from the channel estimate.

    摘要翻译： 使用频域信道估计来估计无线中继器的反馈信道的方法使用最近的信道估计估计误差校正项，并从接收信号的当前块中消除纠错项。 然后，使用频域信道估计并使用导频信号的当前块和接收信号的校正块来估计反馈信道。 也可以从信道估计直接估计和减去信道估计误差项。

    REMOVAL OF MULTIPLICATIVE ERRORS IN FREQUENCY DOMAIN CHANNEL ESTIMATION FOR WIRELESS REPEATERS
    3.
    发明申请
    REMOVAL OF MULTIPLICATIVE ERRORS IN FREQUENCY DOMAIN CHANNEL ESTIMATION FOR WIRELESS REPEATERS 审中-公开
    无线重复频域频域估计中的多重误差的去除

    公开(公告)号：US20110116531A1

    公开(公告)日：2011-05-19

    申请号：US12776786

    申请日：2010-05-10

    申请人： Dhananjay Ashok Gore ,  Gwendolyn Denise Barriac ,  Steven J. Howard

    发明人： Dhananjay Ashok Gore ,  Gwendolyn Denise Barriac ,  Steven J. Howard

    IPC分类号： H04L25/20

    CPC分类号： H04L25/022 ,  H04B7/15585 ,  H04L25/0226

    摘要： 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.

    摘要翻译： 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。

    WIDEBAND ECHO CANCELLATION IN A REPEATER
    6.
    发明申请
    WIDEBAND ECHO CANCELLATION IN A REPEATER 失效
    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。

    Wideband echo cancellation in a repeater
    7.
    发明授权
    Wideband echo cancellation in a repeater 失效
    中继器中的宽带回波消除

    公开(公告)号：US08285201B2

    公开(公告)日：2012-10-09

    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： H04Q7/32

    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。

    REMOVAL OF ICI/ISI ERRORS IN FREQUENCY DOMAIN CHANNEL ESTIMATION FOR WIRELESS REPEATERS
    9.
    发明申请
    REMOVAL OF ICI/ISI ERRORS IN FREQUENCY DOMAIN CHANNEL ESTIMATION FOR WIRELESS REPEATERS 有权
    无线中继器的频域信道估计中ICI / ISI错误的删除

    公开(公告)号：US20110116392A1

    公开(公告)日：2011-05-19

    申请号：US12776998

    申请日：2010-05-10

    申请人： Gwendolyn Denise Barriac ,  Steven J. Howard ,  Dhananjay Ashok Gore

    发明人： Gwendolyn Denise Barriac ,  Steven J. Howard ,  Dhananjay Ashok Gore

    IPC分类号： H04W24/00

    CPC分类号： H04L25/0226 ,  H04B7/15585 ,  H04L25/022 ,  H04L25/0242

    摘要： A method for estimating a feedback channel for a wireless repeater using frequency domain channel estimation estimates an error correction term using a most recent channel estimate and cancels the error correction term from a current block of the receive signal. Then, the feedback channel is estimated using frequency domain channel estimation and using a current block of the pilot signal and the corrected block of the receive signal. A channel estimate error term may also be estimated and subtracted directly from the channel estimate.

    摘要翻译： 使用频域信道估计来估计无线中继器的反馈信道的方法使用最近的信道估计估计误差校正项，并从接收信号的当前块中消除纠错项。 然后，使用频域信道估计并使用导频信号的当前块和接收信号的校正块来估计反馈信道。 也可以从信道估计直接估计和减去信道估计误差项。

    Stability indicator for a wireless repeater
    10.
    发明授权
    Stability indicator for a wireless repeater 有权
    无线中继器的稳定性指示器

    公开(公告)号：US08463176B2

    公开(公告)日：2013-06-11

    申请号：US12722730

    申请日：2010-03-12

    申请人： Michael Mao Wang ,  Dhananjay Ashok Gore ,  Gwendolyn Denise Barriac

    发明人： Michael Mao Wang ,  Dhananjay Ashok Gore ,  Gwendolyn Denise Barriac

    IPC分类号： H04B17/02

    CPC分类号： H04B7/15578

    摘要： A method for monitoring feedback loop stability in a wireless repeater includes measuring a gain control metric in the feedback loop of the repeater periodically for a given time period where the gain control metric is indicative of a loop gain of the feedback loop of the repeater; and monitoring the magnitude of the gain control metric to determine the stability of the feedback loop of the repeater. In operation, a large magnitude of the gain control metric indicates instability in the feedback loop of the repeater.

    摘要翻译： 一种用于监测无线中继器中的反馈环路稳定性的方法包括在给定的时间周期周期性地测量中继器的反馈环路中的增益控制度量，其中增益控制度量指示中继器的反馈环路的环路增益; 并监视增益控制度量的大小以确定中继器的反馈回路的稳定性。 在操作中，大幅度的增益控制度量指示中继器的反馈回路中的不稳定性。