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    • 4. 发明申请
    • USE OF A FILTERBANK IN AN ADAPTIVE ON-CHANNEL REPEATER UTILIZING ADAPTIVE ANTENNA ARRAYS
    • 在自适应通道重复器中使用过滤器在自适应天线阵列中的应用
    • WO2008109571A2
    • 2008-09-12
    • PCT/US2008055733
    • 2008-03-03
    • QUALCOMM INCPROCTOR JAMES A JRGAINEY KENNETH MOTTO JAMES C
    • PROCTOR JAMES A JRGAINEY KENNETH MOTTO JAMES C
    • H04L25/03H04B17/40
    • H04B7/15585H04B7/15542H04B7/15571
    • 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 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.
    • 提供中继器环境,其操作是部署与天线阵列自适应地耦合的反馈消除环路,使得可以通过部署所选择的滤波器组来导出所选择的度量,所述选择的滤波器组可操作以通过分组来处理在信道上的信号,并且导出的度量可以 应用于天线阵列和反馈消除环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。
    • 5. 发明申请
    • ENHANCED PHYSICAL LAYER REPEATER FOR OPERATION IN WIMAX SYSTEMS
    • 增强了在WIMAX系统中运行的物理层重复器
    • WO2007123733A3
    • 2008-11-27
    • PCT/US2007007978
    • 2007-03-30
    • QUALCOMM INCPROCTOR JAMES A JRGAINEY KENNETH MOTTO JAMES C
    • PROCTOR JAMES A JRGAINEY KENNETH MOTTO JAMES C
    • H04B7/15
    • H04B7/15557H04B7/15535
    • An exemplary method (500) and repeater (110, 210, 300) are described for repeating using a time division duplex (TDD) radio protocol. A signal is transmitted from a first station to a second station using a downlink and an uplink. The signal can be detected with detectors (309, 310, 855, 856) on the uplink or the downlink. The repeater can synchronize to time intervals associated with the detected signal that are measured during an observation period. The signal can be retransmitted from the second station to the first station if the signal is detected on the uplink and re-transmitted from the first station to the second station if the signal is detected on the downlink. A gain value associated with the downlink can be used to establish a gain value associated with the uplink.
    • 描述了用于重复使用时分双工(TDD)无线电协议的示例性方法(500)和中继器(110,210,300)。 使用下行链路和上行链路将信号从第一站发送到第二站。 可以在上行链路或下行链路上用检测器(309,310,855,856)检测信号。 中继器可以与在观察期间测量的检测到的信号相关联的时间间隔同步。 如果在下行链路上检测到信号,则如果在上行链路上检测到信号并从第一站重新发送到第二站,则可以将信号从第二站重新发送到第一站。 可以使用与下行链路相关联的增益值来建立与上行链路相关联的增益值。
    • 8. 发明申请
    • SUPERIMPOSED COMPOSITE CHANNEL FILTER
    • 超级复合通道过滤器
    • WO2008109575A3
    • 2009-02-19
    • PCT/US2008055738
    • 2008-03-03
    • QUALCOMM INCPROCTOR JAMES A JRGAINEY KENNETH MOTTO JAMES C
    • PROCTOR JAMES A JRGAINEY KENNETH MOTTO JAMES C
    • H04B7/155H04B17/40
    • H04B7/15585H04B7/15542H04B7/15571
    • Methods and systems are provided to generate digital coefficients for a filter. The generation of coefficients relies on a Fourier transformation of an impulse response in time domain that is zero padded, e.g., zeros are appended to an array corresponding to a sampled input signal of length M. A unit prototypical filter is generated through a frequency domain response of length NFFT = Ns+M-1, wherein NS is a sampling length of the incoming signal. The unit prototypical filter is then circularly shifted in order to generate a band pass filter centered at a desired frequency. Circularly shifted filters are point-to-point added to generate a set of composite digital coefficients to filter the incoming signal. The reference frequencies for the composite filter are extracted from a message received from one or more base stations associated with one or more service providers. The composite filter typically operates on a frequency repeater.
    • 提供方法和系统以产生用于滤波器的数字系数。 系数的产生依赖于零填充的时域中的脉冲响应的傅立叶变换,例如,零被附加到与长度为M的采样输入信号相对应的阵列上。通过频域响应产生单元原型滤波器 长度为NFFT = Ns + M-1,其中NS是输入信号的采样长度。 然后将单元原型滤波器循环移位,以便产生以期望频率为中心的带通滤波器。 循环移位滤波器是点对点相加以产生一组复合数字系数来滤波输入信号。 从与一个或多个服务提供商相关联的一个或多个基站接收的消息中提取复合滤波器的参考频率。 复合滤波器通常在频率转发器上运行。