DELAY CONTROL TO IMPROVE FREQUENCY DOMAIN CHANNEL ESTIMATION IN AN ECHO CANCELLATION REPEATER
    21.
    发明申请
    DELAY CONTROL TO IMPROVE FREQUENCY DOMAIN CHANNEL ESTIMATION IN AN ECHO CANCELLATION REPEATER 审中-公开
    延迟控制以提高ECHO CANCELLATION REPEATER中的频域信道估计

    公开(公告)号:WO2010132457A1

    公开(公告)日:2010-11-18

    申请号:PCT/US2010/034396

    申请日:2010-05-11

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

    Abstract: 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.

    Abstract translation: 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射天线,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。

    WIDEBAND ECHO CANCELLATION IN A REPEATER
    22.
    发明申请
    WIDEBAND ECHO CANCELLATION IN A REPEATER 审中-公开
    一个重复的宽带ECHO取消

    公开(公告)号:WO2010132449A1

    公开(公告)日:2010-11-18

    申请号:PCT/US2010/034387

    申请日:2010-05-11

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

    Abstract: 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.

    Abstract translation: 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。

    AUTOMATIC GAIN CONTROL AND FILTERING TECHNIQUES FOR USE IN ON-CHANNEL REPEATER
    24.
    发明申请
    AUTOMATIC GAIN CONTROL AND FILTERING TECHNIQUES FOR USE IN ON-CHANNEL REPEATER 审中-公开
    自动增益控制和滤波技术用于信道重传

    公开(公告)号:WO2008109573A2

    公开(公告)日:2008-09-12

    申请号:PCT/US2008/055736

    申请日:2008-03-03

    CPC classification number: H04B7/15585 H04B7/15542 H04B7/15571

    Abstract: A repeater environment is provided operative to deploy a feedback cancellation loop that is adaptively coupled with an antenna array such that a selected metric can be derived by deploying a selected filter bank having an automatic gain control operative to process the signal on a bin by bin basis and the derived metric can be applied to the antenna array and feedback cancellation loop combination to improve signal integrity and amplification. In an illustrative implementation, an exemplary repeater environment comprises, a transmitter, a receiver, an equalized feedback cancellation loop circuitry comprising a filter bank, the cancellation loop being operatively coupled to an antenna array. In the illustrative implementation, the feedback cancellation loop can receive signals as input from a cooperating antenna array and provide output signals such as a feedback leakage signal to a cooperating antenna array.

    Abstract translation: 提供中继器环境用于部署与天线阵列自适应地耦合的反馈消除环路,使得可以通过部署具有自动增益控制的所选择的滤波器组来导出所选择的度量,所述滤波器组可操作以通过分组基地处理信号 并且导出的度量可以应用于天线阵列和反馈消除环路组合以改善信号完整性和放大。 在说明性实现中,示例性中继器环境包括发射机,接收机,包括滤波器组的均衡反馈消除环路电路,该消除环路可操作地耦合到天线阵列。 在说明性实现中,反馈消除环路可以从协作天线阵列接收信号作为输入,并向协作天线阵列提供诸如反馈泄漏信号的输出信号。

    METHOD AND APPARATUS FOR MITIGATING OSCILLATION BETWEEN REPEATERS
    26.
    发明申请
    METHOD AND APPARATUS FOR MITIGATING OSCILLATION BETWEEN REPEATERS 审中-公开
    用于减轻重复振荡的方法和装置

    公开(公告)号:WO2008036401A3

    公开(公告)日:2008-07-10

    申请号:PCT/US2007020485

    申请日:2007-09-21

    CPC classification number: H04B7/155 H04W16/26

    Abstract: A first repeater operating within a wireless network including a second repeater capable of communicating with the first repeater, and first and second wireless station devices capable of communicating with at least one of the first repeater and the second repeater, includes a reception device for receiving a wireless signal at a reception frequency; a detector for detecting if a predetermined portion of the received wireless signal includes a modified portion to thereby determine that the received signal is from the second repeater; and a transmission device for transmitting the wireless signal to one of the first and second wireless station devices at a transmission frequency to thereby repeat the wireless signal.

    Abstract translation: 在包括能够与第一中继器通信的第二中继器的无线网络中工作的第一中继器以及能够与第一中继器和第二中继器中的至少一个通信的第一和第二无线站设备包括:接收装置, 接收频率的无线信号; 检测器,用于检测所接收的无线信号的预定部分是否包括修改部分,从而确定接收到的信号来自第二中继器; 以及传输设备,用于以传输频率将无线信号发射到第一和第二无线站设备中的一个,从而重复无线信号。

    NON-FREQUENCY TRANSLATING REPEATER WITH DETECTION AND MEDIA ACCESS CONTROL
    27.
    发明申请
    NON-FREQUENCY TRANSLATING REPEATER WITH DETECTION AND MEDIA ACCESS CONTROL 审中-公开
    非频率转换器,具有检测和媒体访问控制

    公开(公告)号:WO2005115022A2

    公开(公告)日:2005-12-01

    申请号:PCT/US2005016592

    申请日:2005-05-12

    CPC classification number: H04B7/1555 H04B7/2606 H04W88/04

    Abstract: A non-frequency translating repeater (110, 210, 300) for use in a time division duplex (TDD) radio protocol communications system includes detection retransmission and automatic gain control. Detection is performed by detectors (309, 310) and a processor (313). Detection can be overridden by processor (313) using logic elements (314). Antennae (220, 230) having various form factors can be used to couple a base station (222) to a subscriber terminal (232) which can be located in a sub-optimal location such as deep inside a building or the like.

    Abstract translation: 用于时分双工(TDD)无线电协议通信系统的非频率转换中继器(110,210,300)包括检测重传和自动增益控制。 由检测器(309,310)和处理器(313)执行检测。 处理器(313)可以使用逻辑元件(314)覆盖检测。 可以使用具有各种形状因子的天线(220,230)来将基站(222)耦合到可以位于诸如建筑物内部等深处的次最佳位置的用户终端(232)。

    TRANSMISSION CANCELLER FOR WIRELESS LOCAL AREA NETWORK REPEATER

    公开(公告)号:WO2004095763A3

    公开(公告)日:2004-11-04

    申请号:PCT/US2004/007708

    申请日:2004-04-06

    Abstract: A frequency translating repeater (200) for use in a wireless local area network includes a cancellation unit. Canceller (402) is controlled by control (401) to provide an injection signal for canceling leakage in a receive signal path. Reference coupler (403) provides a reference signal from the transmit signal, injection coupler (404) injects a correction signal, and sample coupler (405) provides a sample for feedback. A processor (510) receives the sample signal through a detector (415). Although the present invention is intended for a frequency translating repeater, it has broad applications in radio transceivers in general. One specific application is with frequency division duplex (FDD) handsets or base stations utilizing CDMA technologies such as W-CDMA and IS-2000 or 1XEV-DV/DO.

    WIRELESS LOCAL AREA NETWORK REPEATER WITH DETECTION
    29.
    发明申请
    WIRELESS LOCAL AREA NETWORK REPEATER WITH DETECTION 审中-公开
    无线本地区域网络检测器

    公开(公告)号:WO2004047308A3

    公开(公告)日:2004-08-12

    申请号:PCT/US0335050

    申请日:2003-11-17

    CPC classification number: H04B7/15542 H04B7/15564 H04W16/26 H04W84/12

    Abstract: A frequency translating repeater (200) for use in a time division duplex radio protocol communications system includes an automatic gain control feature. Detection is performed by comparators (401, 411) ADCs (402, 412), DACs (404, 414) and a processor (315). Detection can be overridden by processor (315) using logic elements (406, 416, 407, and 417) to control the generation of a Channel A/Channel B signal and a PA_ON signal for controlling a power amplifier associated with the transmitter.

    Abstract translation: 用于时分双工无线电协议通信系统的频率转换中继器(200)包括自动增益控制特征。 由比较器(401,411)ADC(402,412),DAC(404,414)和处理器(315)执行检测。 处理器(315)可以使用逻辑元件(406,416,407和417)来控制产生通道A /通道B信号和用于控制与发送器相关联的功率放大器的PA_ON信号的检测。

    WIRELESS LOCAL AREA NETWORK REPEATER WITH DETECTION
    30.
    发明申请
    WIRELESS LOCAL AREA NETWORK REPEATER WITH DETECTION 审中-公开
    无线局域网重复检测

    公开(公告)号:WO2004047308A2

    公开(公告)日:2004-06-03

    申请号:PCT/US2003/035050

    申请日:2003-11-17

    IPC: H04B

    CPC classification number: H04B7/15542 H04B7/15564 H04W16/26 H04W84/12

    Abstract: A frequency translating repeater (200) for use in a time division duplex radio protocol communications system includes an automatic gain control feature. Detection is performed by comparators (401, 411) ADCs (402, 412), DACs (404, 414) and a processor (315). Detection can be overridden by processor (315) using logic elements (406, 416, 407, and 417) to control the generation of a Channel A/Channel B signal and a PA_ON signal for controlling a power amplifier associated with the transmitter.

    Abstract translation: 用于时分双工无线协议通信系统的频率转换中继器(200)包括自动增益控制特征。 由比较器(401,411)ADC(402,412),DAC(404,414)和处理器(315)执行检测。 处理器(315)可以使用逻辑元件(406,416,407和417)来控制用于控制与发射器相关联的功率放大器的信道A /信道B信号和PA_ON信号的生成来覆盖检测。 p>

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