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1.发明授权Amplifier system employing analog polynomial predistortion with sub-nyquist digital adaptation 有权采用模拟多项式预失真与次尼古斯数字适应的放大器系统公开(公告)号：US07769103B2
公开(公告)日：2010-08-03
申请号：US11520216
申请日：2006-09-13
IPC分类号： H04L25/49
CPC分类号： H03F1/3294 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F2200/102 , H03F2200/216 , H04L27/364 , H04L27/368
摘要： A predistortion linearized amplifier system that uses analog polynomial based predistortion is disclosed. An analog polynomial function generator receives polynomial parameter updates from a polynomial parameter generator. The polynomial parameter generator uses a combination of analog and digital signal processing to create the parameter updates. This processing is performed on input signal amplitude, detected using analog circuits, and RF coupled samples of the input signal, and the output signal. By using a combination of analog and digital signal processing means, digital processing can be performed at sub-Nyquist rates, significantly reducing the cost of digital circuits. Also, since the predistortion modulation signal is created with an analog function generator, time correlating delay is minimized reducing circuit costs.
摘要翻译： 公开了一种使用模拟多项式的预失真的预失真线性放大器系统。 模拟多项式函数发生器从多项式参数发生器接收多项式参数更新。 多项式参数发生器使用模拟和数字信号处理的组合来创建参数更新。 对使用模拟电路检测的输入信号幅度和输入信号的RF耦合样本以及输出信号进行该处理。 通过使用模拟和数字信号处理装置的组合，可以以次奈奎斯特速率进行数字处理，显着降低数字电路的成本。 此外，由于预失真调制信号是用模拟函数发生器产生的，所以时间相关延迟最小化降低了电路成本。
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2.发明授权Feed forward amplifier employing positive feedback pilot generation with automatic level control 有权使用具有自动电平控制的正反馈导频生成的前馈放大器公开(公告)号：US07187232B2
公开(公告)日：2007-03-06
申请号：US11369529
申请日：2006-03-07
IPC分类号： H03F3/66
CPC分类号： H03F1/26 , H03F1/3235
摘要： A feed forward amplifier and method of amplification are disclosed. The amplifier output is used to generate a pilot signal via feedback using uncancelled noise in the amplifier output. An automatic level control circuit maintains the pilot signal at a substantially constant level when the detected uncancelled noise in the amplifier output is above a threshold level. The generated pilot signal strength is allowed to vary when the detected uncancelled noise in the amplifier output is below the threshold and disappears automatically when the amplifier is aligned.
摘要翻译： 公开了一种前馈放大器和放大方法。 放大器输出用于通过放大器输出中未经检测的噪声的反馈来产生导频信号。 当放大器输出中检测到的未经取消的噪声高于阈值电平时，自动电平控制电路将导频信号保持在基本恒定的电平。 当放大器输出中检测到的未经取消的噪声低于阈值时，产生的导频信号强度会发生变化，当放大器对齐时自动消失。
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公开(公告)号：US07126418B2
公开(公告)日：2006-10-24
申请号：US11288580
申请日：2005-11-29
IPC分类号： H03F3/66
CPC分类号： H03F1/26 , H03F1/3235
摘要： A delay mismatched feed forward amplifier system employing a control system and method using floors and penalties is disclosed. The disclosed control system and method allows the second loop phase adjuster setting to be offset in a repeatable and controlled manner. Applying floors and penalties to offset the steady-state phase adjuster setting modifies the conventional pilot cancellation approach. In the conventional case, pilot cancellation has a distinct minimum that corresponds to the desired adjustment setting. In the disclosed approach, the measured pilot cancellation is clipped to a lower bound or floor to produce a set of equal valued minimum control results. The floor is selected to place a desired phase offset to the phase adjuster at the edge of minimum floor. To ensure that the correct phase adjuster offset is selected from the set of equal valued minimum control results, a control direction based penalty is added. By including both the floor and penalty, the phase adjuster steady state offset will be controlled to the edge of the minimum floor.
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4.发明授权Feed forward amplifier system using penalties and floors for optimal control 失效前馈放大器系统采用罚款和楼层进行最佳控制公开(公告)号：US06998916B2
公开(公告)日：2006-02-14
申请号：US10733087
申请日：2003-12-11
CPC分类号： H03F1/26 , H03F1/3235
摘要： A feed forward amplifier employing a new adaptive controller and method is disclosed. The controller aligns both a gain adjuster and phase adjuster of a first cancellation loop. The phase adjuster may be controlled following a standard approach. However, the gain adjuster is offset intentionally causing an incomplete cancellation, increasing the signal power passing through the error amplifier. If the gain adjuster is offset low, below the gain adjustment required to maximize carrier cancellation, peak power output from the main amplifier is reduced while the second loop maintains constant system output power. If the gain adjuster is offset high, peak power output from the error amplifier is reduced while the second loop maintains constant system output power. By controlling the gain adjuster offset from full first loop cancellation, the feed forward amplifier can be optimized for the power handling capabilities of the main and error amplifiers. A system and method of specifying and controlling the steady-state offset of the first loop gain adjuster is also disclosed. By altering the cost function of the first loop gain, the desired gain adjuster offset becomes the steady-state adjustment. Floors and penalties are incorporated into the first loop gain minimization approach to allow precise specification of the gain adjuster offset. The gain adjuster offset can be controlled at will to optimize the feed forward system even when the operating conditions or goals are varying.
摘要翻译： 公开了采用新的自适应控制器和方法的前馈放大器。 控制器对准第一消除环路的增益调节器和相位调节器。 相位调节器可以按照标准方法进行控制。 然而，增益调整器有意地偏移导致不完全的取消，增加通过误差放大器的信号功率。 如果增益调节器偏移为低电平，低于最大化载波消除所需的增益调整，则主放大器的峰值功率输出减少，而第二个环路保持恒定的系统输出功率。 如果增益调节器偏移高，则从误差放大器输出的峰值功率减小，而第二个回路保持恒定的系统输出功率。 通过控制增益调节器偏离完全第一回路消除，前馈放大器可以针对主和误差放大器的功率处理能力进行优化。 还公开了一种用于指定和控制第一环路增益调节器的稳态偏移的系统和方法。 通过改变第一回路增益的成本函数，期望的增益调整器偏移成为稳态调整。 地面和罚款被纳入第一个环路增益最小化方法，以允许精确规定增益调整器偏移量。 增益调节器偏移可以随意控制，以优化前馈系统，即使操作条件或目标不同。
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5.发明授权Delay mismatched feed forward amplifier system using penalties and floors for control 失效延迟不正确的前馈放大器系统使用罚款和楼层进行控制公开(公告)号：US07002407B2
公开(公告)日：2006-02-21
申请号：US10733498
申请日：2003-12-11
CPC分类号： H03F1/26 , H03F1/3235
摘要： A delay mismatched feed forward amplifier system employing a control system and method using floors and penalties is disclosed. The disclosed control system and method allows the second loop phase adjuster setting to be offset in a repeatable and controlled manner. Applying floors and penalties to offset the steady-state phase adjuster setting modifies the conventional pilot cancellation approach. In the conventional case, pilot cancellation has a distinct minimum that corresponds to the desired adjustment setting. In the disclosed approach, the measured pilot cancellation is clipped to a lower bound or floor to produce a set of equal valued minimum control results. The floor is selected to place a desired phase offset to the phase adjuster at the edge of minimum floor. To ensure that the correct phase adjuster offset is selected from the set of equal valued minimum control results, a control direction based penalty is added. By including both the floor and penalty, the phase adjuster steady state offset will be controlled to the edge of the minimum floor.
摘要翻译： 公开了采用控制系统的延迟失配的前馈放大器系统和使用楼层和罚款的方法。 所公开的控制系统和方法允许以可重复和受控的方式偏移第二回路相位调节器设置。 应用楼层和罚款以抵消稳态相位调整器设置，修改了常规的先导取消方法。 在常规情况下，导频消除具有对应于期望的调整设置的明显的最小值。 在所公开的方法中，测量的导频消除被剪切到下限或下限以产生一组等价的最小控制结果。 选择地板以在相位调整器的最小楼层边缘放置期望的相位偏移。 为了确保从等值最小控制结果的集合中选择正确的相位调整器偏移，增加了基于控制方向的惩罚。 通过包括地板和罚款，相位调整器稳态偏移将被控制在最小楼层的边缘。
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6.发明申请Adaptive echo cancellation for an on-frequency RF repeater using a weighted power spectrum 有权使用加权功率谱的频率RF中继器的自适应回波消除公开(公告)号：US20080176513A1
公开(公告)日：2008-07-24
申请号：US12009667
申请日：2008-01-22
IPC分类号： H04B7/14
CPC分类号： H04B7/15564 , H04B7/2606
摘要： A wireless repeater includes an input antenna for receiving an input signal, an output antenna for outputting an amplified signal, and an amplifier for amplifying the received input signal and providing the output amplified signal to the output antenna. Radiated coupling between the input and output antennas causes echoes to be transmitted by the repeater. A filter is used for applying a weighting function to a power spectrum of a measured signal in the wireless repeater thereby obtaining a weighted power spectrum of the measured signal. An internal feedback path is employed for adaptively canceling the echo by implementing an adaptive algorithm based on a autocorrelation of the input signal employing the weighted power spectrum of the measured signal.
摘要翻译： 无线中继器包括用于接收输入信号的输入天线，用于输出放大信号的输出天线，以及用于放大接收到的输入信号并将输出放大信号提供给输出天线的放大器。 输入和输出天线之间的辐射耦合使得回波由中继器传输。 滤波器用于对无线中继器中的测量信号的功率谱应用加权函数，从而获得测量信号的加权功率谱。 采用内部反馈路径来自适应地消除回波，通过采用基于测量信号的加权功率谱的输入信号的自相关来实现自适应算法。
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7.发明授权Adaptive echo cancellation for an on-frequency RF repeater with digital sub-band filtering 有权具有数字子带滤波功能的频率RF中继器的自适应回波消除公开(公告)号：US08073385B2
公开(公告)日：2011-12-06
申请号：US12468710
申请日：2009-05-19
IPC分类号： H04B1/60
CPC分类号： H04B7/15585
摘要： An adaptive echo cancellation system and method employing an algorithm suitable for a digital repeater with sub-band filtering is disclosed. Cross- and auto-correlation measurements used to estimate the residual coupling are computed from normalized cross and power spectrums which avoid the problems associated with narrow bandwidth signal components. The normalized cross- and power spectra are additionally masked in frequency to reduce the influence of interfering spectral components outside of the passband of the sub-band filter. Regularization of the iterative estimation process is applied to maintain stability and compensate for the bandwidth reduction associated with the sub-band filter and the spectral mask.
摘要翻译： 公开了一种使用适用于具有子带滤波的数字中继器的算法的自适应回波消除系统和方法。 用于估计残差耦合的交叉和自相关测量是从归一化的交叉和功率谱计算出来的，可避免与窄带宽信号分量相关的问题。 标准化的交叉和功率谱在频率上被额外屏蔽以减少在子带滤波器的通带之外的干扰频谱分量的影响。 应用迭代估计过程的正则化来维持稳定性并补偿与子带滤波器和频谱掩模相关联的带宽减小。
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8.发明授权Adaptive echo cancellation for an on-frequency RF repeater using a weighted power spectrum 有权使用加权功率谱的频率RF中继器的自适应回波消除公开(公告)号：US08068783B2
公开(公告)日：2011-11-29
申请号：US12009667
申请日：2008-01-22
CPC分类号： H04B7/15564 , H04B7/2606
摘要： A wireless repeater includes an input antenna for receiving an input signal, an output antenna for outputting an amplified signal, and an amplifier for amplifying the received input signal and providing the output amplified signal to the output antenna. Radiated coupling between the input and output antennas causes echoes to be transmitted by the repeater. A filter is used for applying a weighting function to a power spectrum of a measured signal in the wireless repeater thereby obtaining a weighted power spectrum of the measured signal. An internal feedback path is employed for adaptively canceling the echo by implementing an adaptive algorithm based on a autocorrelation of the input signal employing the weighted power spectrum of the measured signal.
摘要翻译： 无线中继器包括用于接收输入信号的输入天线，用于输出放大信号的输出天线，以及用于放大接收到的输入信号并将输出放大信号提供给输出天线的放大器。 输入和输出天线之间的辐射耦合使得回波由中继器传输。 滤波器用于对无线中继器中的测量信号的功率谱应用加权函数，从而获得测量信号的加权功率谱。 采用内部反馈路径来自适应地消除回波，通过采用基于测量信号的加权功率谱的输入信号的自相关来实现自适应算法。
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9.发明申请ADAPTIVE ECHO CANCELLATION FOR AN ON-FREQUENCY RF REPEATER WITH DIGITAL SUB-BAND FILTERING 有权用于具有数字子带滤波的频率射频复接器的自适应信号解除公开(公告)号：US20090291632A1
公开(公告)日：2009-11-26
申请号：US12468710
申请日：2009-05-19
IPC分类号： H04B3/36
CPC分类号： H04B7/15585
摘要： An adaptive echo cancellation system and method employing an algorithm suitable for a digital repeater with sub-band filtering is disclosed. Cross- and auto-correlation measurements used to estimate the residual coupling are computed from normalized cross and power spectrums which avoid the problems associated with narrow bandwidth signal components. The normalized cross- and power spectra are additionally masked in frequency to reduce the influence of interfering spectral components outside of the passband of the sub-band filter. Regularization of the iterative estimation process is applied to maintain stability and compensate for the bandwidth reduction associated with the sub-band filter and the spectral mask.
摘要翻译： 公开了一种使用适用于具有子带滤波的数字中继器的算法的自适应回波消除系统和方法。 用于估计残差耦合的交叉和自相关测量是从归一化的交叉和功率谱计算出来的，可避免与窄带宽信号分量相关的问题。 标准化的交叉和功率谱在频率上被额外屏蔽以减少在子带滤波器的通带之外的干扰频谱分量的影响。 应用迭代估计过程的正则化来维持稳定性并补偿与子带滤波器和频谱掩模相关联的带宽减小。
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公开(公告)号：US08718542B2
公开(公告)日：2014-05-06
申请号：US12888295
申请日：2010-09-22
CPC分类号： H04W16/26 , H04B7/2606 , H04W16/32 , Y02D70/1242 , Y02D70/1262 , Y02D70/449
摘要： A wireless communication system and method comprising co-location of a pico evolved node B (“eNB”) and a macro up-link repeater is disclosed. User Equipment (“UE”) communicates with a macro eNB via the up-link repeater with reduced transmission power as compared to the transmission power required for the UE to communicate directly with the macro eNB. As a result, the UE does not desensitize the pico eNB receiver. The up-link repeater comprises a donor antenna that radiates a highly directional beam to the macro eNB.
摘要翻译： 公开了一种包括微进化节点B（“eNB”）和宏上行链路中继器的共同定位的无线通信系统和方法。 与UE直接与宏eNB通信所需的传输功率相比，用户设备（“UE”）通过上行链路中继器与发送功率降低的宏eNB进行通信。 结果，UE不会使微微eNB接收机脱敏。 上行链路中继器包括向宏eNB辐射高度定向波束的施主天线。
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