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1. 发明申请

WO2010042885A1 CREST FACTOR REDUCTION FOR OFDM COMMUNICATIONS SYSTEMS BY TRANSMITTING PHASE SHIFTED RESOURCE BLOCKS 审中-公开
标题翻译：通过发送相变资源块的OFDM通信系统的减少因子
公开(公告)号：WO2010042885A1
公开(公告)日：2010-04-15
申请号：PCT/US2009/060264
申请日：2009-10-09
申请人： POWERWAVE TECHNOLOGIES, INC. , BRAITHWAITE, Richard, Neil
发明人： BRAITHWAITE, Richard, Neil
IPC分类号： H04J11/00
CPC分类号： H04L27/2621
摘要： In the disclosed system and method phase (and optionally amplitude) shifts are applied at an OFDM transmitter to resource blocks within a given slot to implement Crest Factor Reduction (CFR), The phase shifts may differ between resource blocks and are selected to reduce the peaks in the OFDM waveform. The resource block phase shifts do not affect the demodulation process when the equalization at the receiver is performed on individual blocks separately. As a result, the crest factor reduction is achieved without increasing the EVM or BER in the received signal. In addition, a computational efficient algorithm for determining the resource block phase shifts needed for CFR is disclosed.
摘要翻译：在所公开的系统和方法阶段（以及可选的振幅）移位在一个OFDM发射机上施加到给定时隙内的资源块以实现波峰因数减小（CFR）。相移可以在资源块之间不同并被选择以减少峰值在OFDM波形中。当分别对各个块执行接收机的均衡时，资源块相移不影响解调过程。结果，在不增加接收信号中的EVM或BER的情况下实现波峰因数降低。此外，公开了一种用于确定CFR所需的资源块相移的计算有效算法。

2. 发明申请

WO2006016964A2 DIGITAL TRANSMITTER SYSTEM EMPLOYING SELF-GENERATING PREDISTORTION PARAMETER LISTS AND ADAPTIVE CONTROLLER 审中-公开
标题翻译：数字发射机系统使用自发电预防参数列表和自适应控制器
公开(公告)号：WO2006016964A2
公开(公告)日：2006-02-16
申请号：PCT/US2005/021025
申请日：2005-06-14
申请人： POWERWAVE TECHNOLOGIES, INC. , BRAITHWAITE, Richard, Neil
发明人： BRAITHWAITE, Richard, Neil
IPC分类号： H04K1/02 , H04L25/03 , H04L25/49
CPC分类号： H03F1/3235 , H03F1/3247 , H03F1/3258 , H03F2200/192 , H03F2200/198 , H03F2200/204 , H04L27/368
摘要： A method and apparatus for digital predistortion of power amplifiers are disclosed. Successful digital predistortion parameter settings are correlated with the operating conditions that affect the distortion of an amplifier (111). These operating conditions may include input power level, carrier frequency, temperature, DC supply voltage, or others. The successful predistortion parameter settings along with the corresponding operating conditions are stored in a list (224) that is indexed using multi-dimensional attribute vectors. The elements of the list are generated automatically.
摘要翻译：公开了一种用于功率放大器的数字预失真的方法和设备。成功的数字预失真参数设置与影响放大器（111）失真的操作条件相关。这些工作条件可能包括输入功率电平，载波频率，温度，直流电源电压等。成功的预失真参数设置连同对应的操作条件被存储在使用多维属性向量索引的列表（224）中。列表中的元素是自动生成的。

3. 发明申请

WO2007073490A3 CREST FACTOR REDUCTION SYSTEM AND METHOD FOR OFDM TRANSMISSION SYSTEMS USING SELECTIVE SUB-CARRIER DEGRADATION 审中-公开
标题翻译：使用选择性副载波降级的OFDM传输系统的检测因子减少系统和方法
公开(公告)号：WO2007073490A3
公开(公告)日：2008-01-31
申请号：PCT/US2006048726
申请日：2006-12-20
申请人： POWERWAVE TECHNOLOGIES INC , BRAITHWAITE RICHARD NEIL
发明人： BRAITHWAITE RICHARD NEIL
IPC分类号： H04K1/10
CPC分类号： H04L27/2614
摘要： A system and method for crest factor reduction of OFDM transmission systems using selective sub-carrier degradation, is disclosed. A modulated communications signal comprising a series of symbols is converted into parallel format in groups of plural symbols in the frequency domain. Crest factor reduction reduces a primary peak of the groups of plural symbols by selective sub-carrier degradation, to generate peak reduction symbols. The groups of plural symbols are converted into time domain symbols, and combined with the peak reduction symbols to provide peak reduced symbols in time domain.
摘要翻译：公开了一种使用选择性子载波降级的OFDM传输系统的波峰因数降低的系统和方法。包括一系列符号的调制通信信号在频域中以多个符号的组被转换成并行格式。波峰因数降低通过选择性子载波降解来减少多个符号的组的主峰，以产生峰值降低符号。多个符号的组被转换成时域符号，并与峰值缩减符号组合以在时域中提供峰值缩减符号。

4. 发明申请

WO2007124103A3 SYSTEM AND METHOD FOR ESTIMATION AND COMPENSATION OF RADIATED FEEDBACK COUPLING IN A HIGH GAIN REPEATER 审中-公开
公开(公告)号：WO2007124103A3
公开(公告)日：2007-11-01
申请号：PCT/US2007/009744
申请日：2007-04-20
申请人： POWERWAVE TECHNOLOGIES, INC. , BRAITHWAITE, Richard, Neil
发明人： BRAITHWAITE, Richard, Neil
IPC分类号： H04B7/15 , H04B7/14 , H04B3/36
摘要： A system and method of compensating for the effects of the antenna coupling in on-frequency repeaters, whose input and output signals are the same frequency, are disclosed. The repeater (10) is implemented with internal digitally determined compensation that reduces the effect of the antenna coupling, allowing the forward gain of the repeater (10) to be increased. The real and imaginary components of the forward gain are dithered. The change in the power spectrum of the signal in response to the dithering is used to estimate the residual (uncompensated) feedback coupling.

5. 发明申请

WO2007124103A2 SYSTEM AND METHOD FOR ESTIMATION AND COMPENSATION OF RADIATED FEEDBACK COUPLING IN A HIGH GAIN REPEATER 审中-公开
标题翻译：用于高增益反馈中的放射反馈耦合的估计和补偿的系统和方法
公开(公告)号：WO2007124103A2
公开(公告)日：2007-11-01
申请号：PCT/US2007009744
申请日：2007-04-20
申请人： POWERWAVE TECHNOLOGIES INC , BRAITHWAITE RICHARD NEIL
发明人： BRAITHWAITE RICHARD NEIL
IPC分类号： H04B3/36 , H04B7/14
CPC分类号： H04B7/15578
摘要： A system and method of compensating for the effects of the antenna coupling in on-frequency repeaters, whose input and output signals are the same frequency, are disclosed. The repeater (10) is implemented with internal digitally determined compensation that reduces the effect of the antenna coupling, allowing the forward gain of the repeater (10) to be increased. The real and imaginary components of the forward gain are dithered. The change in the power spectrum of the signal in response to the dithering is used to estimate the residual (uncompensated) feedback coupling.
摘要翻译：公开了一种补偿输入和输出信号相同频率的频率转发器中天线耦合效应的系统和方法。中继器（10）通过内部数字确定的补偿来实现，其减少天线耦合的影响，从而允许中继器（10）的正向增益增加。正向增益的实部和虚部分为抖动。响应于抖动的信号的功率谱的变化用于估计残差（无补偿）反馈耦合。

6. 发明申请

WO2007073490A2 CREST FACTOR REDUCTION SYSTEM AND METHOD FOR OFDM TRANSMISSION SYSTEMS USING SELECTIVE SUB-CARRIER DEGRADATION 审中-公开
标题翻译：使用选择性副载波降级的OFDM传输系统的检测因子减少系统和方法
公开(公告)号：WO2007073490A2
公开(公告)日：2007-06-28
申请号：PCT/US2006/048726
申请日：2006-12-20
申请人： POWERWAVE TECHNOLOGIES, INC. , BRAITHWAITE, Richard, Neil
发明人： BRAITHWAITE, Richard, Neil
CPC分类号： H04L27/2614
摘要： A system and method for crest factor reduction of OFDM transmission systems using selective sub-carrier degradation, is disclosed. A modulated communications signal comprising a series of symbols is converted into parallel format in groups of plural symbols in the frequency domain. Crest factor reduction reduces a primary peak of the groups of plural symbols by selective sub-carrier degradation, to generate peak reduction symbols. The groups of plural symbols are converted into time domain symbols, and combined with the peak reduction symbols to provide peak reduced symbols in time domain.
摘要翻译：公开了一种使用选择性子载波降级的OFDM传输系统的波峰因数降低的系统和方法。包括一系列符号的调制通信信号在频域中以多个符号的组被转换成并行格式。波峰因数降低通过选择性子载波降解来减少多个符号的组的主峰，以产生峰值降低符号。多个符号的组被转换成时域符号，并与峰值缩减符号组合以在时域中提供峰值缩减符号。

7. 发明申请

WO2006113234A3 ADAPTIVE PREDISTORTION LINEARIZED AMPLIFIER SYSTEM EMPLOYING SELECTIVE SAMPLING 审中-公开
标题翻译：自适应预测线性放大器系统采用选择性采样
公开(公告)号：WO2006113234A3
公开(公告)日：2007-04-12
申请号：PCT/US2006013529
申请日：2006-04-12
申请人： POWERWAVE TECHNOLOGIES INC , BRAITHWAITE RICHARD NEIL
发明人： BRAITHWAITE RICHARD NEIL
IPC分类号： H03F1/26
CPC分类号： H03F1/3282 , H03F1/3247 , H03F1/3258 , H03F2200/102 , H03F2200/195 , H03F2200/207 , H03F2200/435 , H03F2201/3227
摘要： An adaptive predistortion linearized amplifier system employing selective sampling is disclosed including an adaptive predistorter (106) and a power amplifier (108). Two selective sampling methods of identifying valid measurements using information from the input signal are disclosed. The selective sampling process improves the convergence properties of tuning algorithms based on mimimizing the gain error variance. It also reduces the number of data samples processed by the estimator (110) used in the tuning process.
摘要翻译：公开了一种采用选择性采样的自适应预失真线性放大器系统，包括自适应预失真器（106）和功率放大器（108）。公开了使用来自输入信号的信息来识别有效测量的两种选择性采样方法。选择性采样过程基于模拟增益误差方差提高了调谐算法的收敛性。它还减少了在调谐过程中使用的估计器（110）处理的数据样本的数量。

8. 发明申请

WO2006016964A3 DIGITAL TRANSMITTER SYSTEM EMPLOYING SELF-GENERATING PREDISTORTION PARAMETER LISTS AND ADAPTIVE CONTROLLER 审中-公开
标题翻译：使用自动生成参数参数和自适应控制器的数字发射器系统
公开(公告)号：WO2006016964A3
公开(公告)日：2006-04-13
申请号：PCT/US2005021025
申请日：2005-06-14
申请人： POWERWAVE TECHNOLOGIES INC , BRAITHWAITE RICHARD NEIL
发明人： BRAITHWAITE RICHARD NEIL
IPC分类号： H04B1/04 , H03F1/32 , H04B7/00 , H04M11/00 , H04Q7/20
CPC分类号： H03F1/3235 , H03F1/3247 , H03F1/3258 , H03F2200/192 , H03F2200/198 , H03F2200/204 , H04L27/368
摘要： A method and apparatus for digital predistortion of power amplifiers are disclosed. Successful digital predistortion parameter settings are correlated with the operating conditions that affect the distortion of an amplifier (111). These operating conditions may include input power level, carrier frequency, temperature, DC supply voltage, or others. The successful predistortion parameter settings along with the corresponding operating conditions are stored in a list (224) that is indexed using multi-dimensional attribute vectors. The elements of the list are generated automatically.
摘要翻译：公开了用于功率放大器的数字预失真的方法和装置。成功的数字预失真参数设置与影响放大器（111）失真的工作条件相关。这些操作条件可以包括输入功率电平，载波频率，温度，直流供电电压等。成功的预失真参数设置以及相应的操作条件被存储在使用多维属性向量索引的列表（224）中。列表的元素将自动生成。

9. 发明申请

WO2008060527A3 STABILITY RECOVERY FOR AN ON-FREQUENCY RF REPEATER WITH ADAPTIVE ECHO CANCELLATION 审中-公开
标题翻译：具有自适应回声消除功能的射频中继器的稳定性恢复
公开(公告)号：WO2008060527A3
公开(公告)日：2008-07-03
申请号：PCT/US2007023807
申请日：2007-11-14
申请人： POWERWAVE TECHNOLOGIES INC , BRAITHWAITE RICHARD NEIL
发明人： BRAITHWAITE RICHARD NEIL
IPC分类号： H04B1/16
CPC分类号： H04B1/525 , H04B7/15564
摘要： A wireless repeater (10) includes an internal feedback path (150) for adaptively cancelling an echo between an output antenna (22) and an input antenna (21). The internal feedback path (150) employs an adaptive algorithm implementing a list having a plurality of list elements. Each list element has one or more echo cancellation parameters and one or more repeater settings. The list may be pruned by employing a minimum distance between elements within the list. A method for stabilizing a wireless repeater includes obtaining an autocorrelation of a signal in a signal path of the repeater, detecting an echo in the signal path based on the autocorrelation, providing a list of elements indicating past successful echo cancellation coefficients and associated repeater settings, and adaptively adjusting an error of the echo cancellation coefficients to cancel the echo in the signal path.
摘要翻译：无线中继器（10）包括用于自适应地消除输出天线（22）和输入天线（21）之间的回声的内部反馈路径（150）。内部反馈路径（150）采用实现具有多个列表元素的列表的自适应算法。每个列表元素都有一个或多个回声消除参数和一个或多个中继器设置。列表可以通过采用列表内元素之间的最小距离来修剪。一种用于稳定无线中继器的方法包括：获得中继器的信号路径中的信号的自相关;基于自相关检测信号路径中的回声;提供指示过去成功的回声消除系数和相关联的中继器设置的元素列表; 并自适应地调整回声消除系数的误差以消除信号路径中的回声。

10. 发明申请

WO2007035358A3 AMPLIFIER SYSTEM EMPLOYING ANALOG POLYNOMIAL PREDISTORTION WITH SUB-NYQUIST DIGITAL ADAPTATION 审中-公开
标题翻译：使用模拟多项式预条件与次级数字适应的放大器系统
公开(公告)号：WO2007035358A3
公开(公告)日：2007-07-12
申请号：PCT/US2006035663
申请日：2006-09-14
申请人： POWERWAVE TECHNOLOGIES INC , CARICHNER SCOTT , BRAITHWAITE RICHARD NEIL , MASLENNIKOV NIKOLAI , HUNTON MATTHEW J
发明人： CARICHNER SCOTT , BRAITHWAITE RICHARD NEIL , MASLENNIKOV NIKOLAI , HUNTON MATTHEW J
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 (110) receives polynomial parameter updates from a polynomial parameter generator (155). The polynomial parameter generator (155) 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：公开了一种使用基于模拟多项式的预失真的预失真线性化放大器系统。模拟多项式函数发生器（110）从多项式参数发生器（155）接收多项式参数更新。多项式参数发生器（155）使用模拟和数字信号处理的组合来创建参数更新。该处理是对输入信号幅度执行的，使用模拟电路和输入信号的RF耦合样本以及输出信号进行检测。通过使用模拟和数字信号处理装置的组合，可以以亚奈奎斯特速率执行数字处理，显着降低数字电路的成本。而且，由于预失真调制信号是由模拟函数发生器产生的，所以时间相关延迟被最小化，降低了电路成本。

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