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1. 发明授权

US08489047B2 Transmitter linearized using bias deviation gain adjustment and method therefor 有权
标题翻译：发射机采用偏置偏差增益线性化调整及其方法
公开(公告)号：US08489047B2
公开(公告)日：2013-07-16
申请号：US12917878
申请日：2010-11-02
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04B1/04 , H01Q11/12
CPC分类号： H04B1/0475 , H03F1/301 , H03F1/3241 , H03F1/3247 , H03F3/193 , H03F3/245 , H03F2200/15 , H03F2200/18 , H03G3/3042
摘要： A transmitter (50) includes a low power memoryless nonlinear predistorter (58) that inserts predistortion configured to address a nonlinearity (146) corresponding to gain droop and another nonlinearity (148) corresponding to deviations from an average bias condition. When efforts are taken to reduce memory effects, such as configuring a network of components (138) that couple to an HPA (114) to avoid resonance frequencies within a video bandwidth (140), high performance linearization at low power results without extending linearization beyond that provided by the memoryless nonlinear predistorter (58). Each nonlinearity is addressed by applying gain to a communication signal (54). The amount of gain applied is determined by a look-up table (170) for one nonlinearity (146) and by a look-up table (198) in combination with a differentiator (202) for the other nonlinearity (148). The look-up tables (170, 198) are updated in accordance with modified LMS control loops.
摘要翻译：发射机（50）包括低功率无记忆非线性预失真器（58），其插入被配置为寻址对应于增益下降的非线性（146）的预失真和对应于与平均偏置条件的偏差相对应的另一非线性（148）。当努力减少存储器效应时，例如配置耦合到HPA（114）的组件网络（138）以避免视频带宽（140）内的共振频率，在低功率下实现高性能线性化，而不会延长线性化超出由无记忆非线性预失真器（58）提供。通过将增益应用于通信信号来解决每个非线性（54）。施加的增益量由用于一个非线性（146）的查找表（170）和与另一非线性（148）的微分器（202）组合的查找表（198）确定。根据修改的LMS控制环来更新查找表（170,198）。

2. 发明申请

US20120034887A1 Transmitter Linearized Using Cartesian-Processed Look-Up Table and Method Therefor 有权
标题翻译：使用笛卡尔加工查找表线性化发射机及其方法
公开(公告)号：US20120034887A1
公开(公告)日：2012-02-09
申请号：US12860507
申请日：2010-08-20
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04B1/04
CPC分类号： H03F1/3247 , H03F1/3241 , H03F3/24 , H03F2201/3224 , H03F2201/3233 , H04B2001/0425
摘要： A transmitter (50) includes a nonlinear predistorter (58) having two instances of an inverting transform (106, 106′) that may be implemented in a look-up table (122) and that implements a transform which is the inverse of an average terms component (96) of a nonlinear transform model (94) for an amplifier (70). The look-up table (122) may be updated using a continuous process control loop that avoids Cartesian to polar coordinate conversions. One of the two instances of the inverting transform (106) is cascaded with a non-inversing transform (108) within a residual cancellation section (110) of the predistorter (58). The non-inversing transform (108) implements a transform which is an estimate of a deviation terms component (98) of the nonlinear transform model (94). The residual cancellation section (110) produces a weak signal that replaces an unwanted residual term in an amplified communication signal (76) with a much weaker residual term.
摘要翻译：发射机（50）包括具有可以在查找表（122）中实现并且实现与平均值相反的变换的反向变换（106,106'）的两个实例的非线性预失真器（58）用于放大器（70）的非线性变换模型（94）的项分量（96）。可以使用避免笛卡尔到极坐标转换的连续过程控制循环来更新查找表（122）。反相变换（106）的两个实例之一与预失真器（58）的残余消除部分（110）内的非反相变换（108）级联。非反转变换（108）实现变换，其是非线性变换模型（94）的偏差项分量（98）的估计。残余消除部分（110）产生弱信号，其以较弱的残余项替代放大的通信信号（76）中的不需要的残余项。

3. 发明申请

US20110092173A1 TRANSMITTING UNIT THAT REDUCES PAPR USING OUT-OF-BAND DISTORTION AND METHOD THEREFOR 有权
标题翻译：传输单元减少使用带外失真的PAPR及其方法
公开(公告)号：US20110092173A1
公开(公告)日：2011-04-21
申请号：US12580069
申请日：2009-10-15
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04B1/02
CPC分类号： H04B1/0475 , H03F1/3247 , H03F1/34 , H03F3/19 , H03F3/24 , H03F2201/3209 , H04B2001/0433
摘要： A transmitting unit (12) clips a communication signal (14) to form a threshold-responsive signal (36, 36′) which includes in-band distortion (40) and out-of-band distortion (38). A portion of the out-of-band distortion (38) is notched within rejection bands (48, 50) adjacent to the communication signal's bandwidth (24). But remaining portions of the out-of-band distortion (38) and portions of the in-band distortion (40) are included with the communication signal (14). The remaining portion of the out-of-band distortion (38) causes the communication signal (14) to be in violation of a spectral mask (30). The mask-violating communication signal 14 with out-of-band distortion (38) and in-band distortion (40) is amplified by an RF power amplifier (22). After amplification, a bandpass filter (92) exhibiting fast rolloff regions (110) attenuates the amplified out-of-band distortion (38) causing compliance with the spectral mask (30).
摘要翻译：发送单元（12）夹住通信信号（14）以形成包括带内失真（40）和带外失真（38）的阈值响应信号（36,36'）。带外失真（38）的一部分在与通信信号带宽（24）相邻的抑制频带（48,50）内被切断。但是，通信信号（14）包括带外失真（38）的剩余部分和带内失真（40）的部分。带外失真（38）的剩余部分导致通信信号（14）违反频谱掩模（30）。具有带外失真（38）和带内失真（40）的屏蔽违规通信信号14被RF功率放大器（22）放大。在放大之后，呈现快速滚降区域（110）的带通滤波器（92）衰减放大的带外失真（38），导致符合频谱掩模（30）。

4. 发明申请

US20130259159A1 TRANSMITTER LINEARIZED IN RESPONSE TO DERIVATIVE SIGNAL AND METHOD THEREFOR 有权
标题翻译：发射机对衍生信号进行线性化及其方法
公开(公告)号：US20130259159A1
公开(公告)日：2013-10-03
申请号：US13881219
申请日：2011-10-21
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0266 , H03F1/3241 , H03F1/3247 , H03F1/34 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2201/3233 , H04B2001/0425 , H04B2001/0433 , H04B2001/045
摘要： A transmitter (50) includes a low power nonlinear predistorter (58) that inserts predistortion configured to compensate for a memoryless nonlinearity (146) corresponding to gain droop and another memoryless nonlinearity (148) corresponding to a video signal. When efforts are taken to reduce memory effects, such as configuring a network of components (138) that couple to an HPA (114) to avoid resonance frequencies substantially throughout a video bandwidth (140), high performance linearization at low power results without extending linearization beyond that provided by the memoryless nonlinear predistorter (58). A look-up table (282) has address inputs responsive to a magnitude parameter (152) of a communication signal (54). A pre-distorted communication signal (60) is responsive to the output of the look-up table, a derivative signal (204), and possibly one or more variable bias parameters (85). The look-up table (282) is updated in response to an LMS control loop.
摘要翻译：发射机（50）包括低功率非线性预失真器（58），其插入被配置为补偿对应于增益下降的无记忆非线性（146）的预失真和对应于视频信号的另一无记忆非线性（148）。当努力减少存储器效应时，例如配置耦合到HPA（114）的组件网络（138）以在整个视频带宽（140）中基本上避免共振频率，在低功率下实现高性能线性化而不延长线性化超过无记忆非线性预失真器（58）提供的。查找表（282）具有响应于通信信号（54）的幅度参数（152）的地址输入。预失真通信信号（60）响应于查找表的输出，导数信号（204）以及可能的一个或多个可变偏置参数（85）。响应于LMS控制循环来更新查找表（282）。

5. 发明授权

US08351876B2 Transmitter linearized using cartesian-processed look-up table and method therefor 有权
标题翻译：发射机线性化使用笛卡尔加工查询表及其方法
公开(公告)号：US08351876B2
公开(公告)日：2013-01-08
申请号：US12860507
申请日：2010-08-20
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04B1/04 , H04K3/00
CPC分类号： H03F1/3247 , H03F1/3241 , H03F3/24 , H03F2201/3224 , H03F2201/3233 , H04B2001/0425
摘要： A transmitter (50) includes a nonlinear predistorter (58) having two instances of an inverting transform (106, 106′) that may be implemented in a look-up table (122) and that implements a transform which is the inverse of an average terms component (96) of a nonlinear transform model (94) for an amplifier (70). The look-up table (122) may be updated using a continuous process control loop that avoids Cartesian to polar coordinate conversions. One of the two instances of the inverting transform (106) is cascaded with a non-inversing transform (108) within a residual cancellation section (110) of the predistorter (58). The non-inversing transform (108) implements a transform which is an estimate of a deviation terms component (98) of the nonlinear transform model (94). The residual cancellation section (110) produces a weak signal that replaces an unwanted residual term in an amplified communication signal (76) with a much weaker residual term.
摘要翻译：发射机（50）包括具有可以在查找表（122）中实现并且实现与平均值相反的变换的反向变换（106,106'）的两个实例的非线性预失真器（58）用于放大器（70）的非线性变换模型（94）的项分量（96）。可以使用避免笛卡尔到极坐标转换的连续过程控制循环来更新查找表（122）。反相变换（106）的两个实例之一与预失真器（58）的残余消除部分（110）内的非反相变换（108）级联。非反转变换（108）实现变换，其是非线性变换模型（94）的偏差项分量（98）的估计。残余消除部分（110）产生弱信号，其以较弱的残余项替代放大的通信信号（76）中的不需要的残余项。

6. 发明申请

US20120106676A1 Transmitter Linearized In Response To Signal Magnitude Derivative Parameter and Method Therefor 有权
标题翻译：发射机线性化响应信号幅度导数参数及其方法
公开(公告)号：US20120106676A1
公开(公告)日：2012-05-03
申请号：US13019173
申请日：2011-02-01
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04L25/49
CPC分类号： H04B1/0475 , H03F1/02 , H03F1/0266 , H03F1/3241 , H03F1/3247 , H03F1/34 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2201/3233 , H04B2001/0425 , H04B2001/0433 , H04B2001/045
摘要： A transmitter (50) includes a low power nonlinear predistorter (58) that inserts predistortion configured to compensate for a memoryless nonlinearity (146) corresponding to gain droop and another memoryless nonlinearity (148) corresponding to a video signal. When efforts are taken to reduce memory effects, such as configuring a network of components (138) that couple to an HPA (114) to avoid resonance frequencies within a video bandwidth (140), high performance linearization at low power results without extending linearization beyond that provided by the memoryless nonlinear predistorter (58). A look-up table (282) has address inputs responsive to a magnitude parameter (152) of a communication signal (54), a magnitude derivative parameter (204) of the communication signal (54), and possibly one or more variable bias parameters (85). The look-up table (282) produces a gain-correcting signal (284) that adjusts the gain applied to the communication signal (54) prior to amplification. The look-up table (282) is updated in response to an LMS control loop.
摘要翻译：发射机（50）包括低功率非线性预失真器（58），其插入被配置为补偿对应于增益下降的无记忆非线性（146）的预失真和对应于视频信号的另一无记忆非线性（148）。当努力减少存储器效应时，例如配置耦合到HPA（114）的组件网络（138）以避免视频带宽（140）内的共振频率，在低功率下实现高性能线性化，而不会延长线性化超出由无记忆非线性预失真器（58）提供。查找表（282）具有响应于通信信号（54）的幅度参数（152），通信信号（54）的幅度导数参数（204）以及可能的一个或多个可变偏置参数的地址输入（85）。查找表（282）产生增益校正信号（284），其在放大之前调整施加到通信信号（54）的增益。响应于LMS控制循环来更新查找表（282）。

7. 发明申请

US20110064162A1 TRANSMITTING UNIT THAT REDUCES PAPR AND METHOD THEREFOR 有权
标题翻译：传输单元减少PAPR及其方法
公开(公告)号：US20110064162A1
公开(公告)日：2011-03-17
申请号：US12557915
申请日：2009-09-11
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04L25/49 , H04B1/04
CPC分类号： H04L27/2623 , H04L5/0048 , H04L27/367
摘要： A communication system (10) includes a transmitting unit (12) with a peak to average power (PAPR) reduction section (30). The PAPR reduction section (30) modifies the PAPR reduction it effects in a communication signal (14) in accordance with two different error vector magnitude (EVM) constraints for each channel type (102), where a channel type (102) is a distinct combination of a modulation order and a coding rate. The EVM constraint followed for each subcarrier (25) in an OFDM or OFDMA application is selected in response to whether the subcarrier (25) conveys voice or non-voice data. The PAPR reduction section (30) may include a scaling filter (72). The scaling filter (72) is efficiently defined through the use of a predetermined sinc function (94) and a first stage scale factor (67) that is calculated in response to a weighted average of excursion signal subcarrier gains (150), where the weighting follows the distribution of channel types (102) through the subcarriers (25).
摘要翻译：通信系统（10）包括具有峰值平均功率（PAPR）减少部分（30）的发送单元（12）。根据对于每个信道类型（102）的两个不同的误差向量幅度（EVM）约束，PAPR减小部分（30）修改其在通信信号（14）中对PAPR的影响，其中信道类型（102）是不同的调制阶数与编码率的组合。响应于子载波（25）是否传送语音或非语音数据，选择OFDM或OFDMA应用中的每个子载波（25）所遵循的EVM约束。 PAPR减少部分（30）可以包括缩放滤波器（72）。缩放滤波器（72）通过使用响应于偏移信号副载波增益（150）的加权平均值计算的预定的正弦函数（94）和第一级比例因子（67）被有效地定义，其中加权遵循通过子载波（25）的信道类型（102）的分布。

8. 发明授权

US07899416B2 RF transmitter with heat compensation and method therefor 有权
标题翻译：具有热补偿的射频发射器及其方法
公开(公告)号：US07899416B2
公开(公告)日：2011-03-01
申请号：US11939890
申请日：2007-11-14
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04B1/04
CPC分类号： H03F1/3247 , H03F1/34 , H03F3/24 , H03F2200/207 , H03F2200/447 , H03F2200/451 , H04B2001/0416 , H04B2001/0433
摘要： An RF transmitter (10) includes an RF amplifier (22) that experiences gain-droop distortion as a result of self-heating. A heat compensator (20) is included to insert a gain boost of an amount which is the inverse of the gain droop experienced by the RF amplifier (22). The amount of gain boost is determined by generating a heat signal (88) from low-pass filtering (86) the squared magnitude (82) of a communication signal (14). The heat signal (88) is scaled by a weighting signal (68) estimated by monitoring the amplified RF signal (42) at the output of the RF amplifier (22). A nonlinear relationship section (96) then transforms the scaled signal into a gain-boost signal (94) that corresponds to the inverse of gain droop in the RF amplifier (22).
摘要翻译： RF发射器（10）包括经由自加热结果的增益下垂失真的RF放大器（22）。包括热补偿器（20）以插入与RF放大器（22）经历的增益下降的倒数的量的增益升高。通过从通信信号（14）的平方值（82）的低通滤波（86）产生加热信号（88）来确定增益升高量。通过在RF放大器（22）的输出处监视放大的RF信号（42）估计的加权信号（68）来缩放热信号（88）。然后，非线性关系部分（96）将缩放的信号变换成对应于RF放大器（22）中的增益下降的倒数的增益 - 升压信号（94）。

9. 发明授权

US07724840B2 RF transmitter with predistortion and method therefor 有权
标题翻译：具有预失真的RF发射机及其方法
公开(公告)号：US07724840B2
公开(公告)日：2010-05-25
申请号：US11641914
申请日：2006-12-19
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04L25/03 , H04L27/36
CPC分类号： H04L25/03343 , H03F1/3247 , H03F1/3294 , H03F3/24 , H03F2200/207 , H03F2200/336 , H04L25/03019 , H04L2025/03687
摘要： An RF transmitter (10) includes a linear predistorter (22) and a nonlinear predistorter (24) which together drive analog transmitter components (14). The linear and nonlinear predistorters (22, 24) are implemented using a collection of adaptive equalizers (30). A feedback signal (20) is developed by downconverting an RF communication signal (16) obtained from the analog components (14). The feedback signal (20) are used in driving tap coefficients (34) for the adaptive equalizers (30′, 30″) in the nonlinear predistorter (24). An intermodulation-product canceller (94) uses signal cancellation to cancel intermodulation products from the feedback signal (20) and generate an intermodulation-neutralized feedback signal (96). The intermodulation-neutralized feedback signal (96) is used along with a modulated convergence factor (43) in driving tap coefficients (34) for the adaptive equalizer (30) in the linear predistorter (22).
摘要翻译： RF发射器（10）包括一起驱动模拟发射器部件（14）的线性预失真器（22）和非线性预失真器（24）。使用自适应均衡器（30）的集合来实现线性和非线性预失真器（22,24）。通过对从模拟部件（14）获得的RF通信信号（16）进行下变频来开发反馈信号（20）。反馈信号（20）用于驱动非线性预失真器（24）中的自适应均衡器（30'，30“）的抽头系数（34）。互调产物消除器（94）使用信号消除来从反馈信号（20）中消除互调产物，并产生互调中和的反馈信号（96）。互调中和反馈信号（96）与在线性预失真器（22）中用于自适应均衡器（30）的抽头系数（34）的调制收敛因子（43）一起使用。

10. 发明申请

US20080285640A1 RF Transmitter With Nonlinear Predistortion and Method Therefor 审中-公开
标题翻译： RF发射机与非线性预失真及其方法
公开(公告)号：US20080285640A1
公开(公告)日：2008-11-20
申请号：US11748796
申请日：2007-05-15
申请人： Ronald Duane McCallister , Eric M. Brombaugh
发明人： Ronald Duane McCallister , Eric M. Brombaugh
IPC分类号： H04L25/49
CPC分类号： H04L27/368 , H04L25/03044 , H04L25/03343
摘要： An RF transmitter (10) includes a nonlinear predistorter (24). The nonlinear predistorter (24) is implemented using adaptive equalizers (30′, 30″). A feedback signal (20) is developed by downconverting an RF communication signal (16). The feedback signal (20) is used in driving tap coefficients (34) for the adaptive equalizers (30′, 30″). The adaptive equalizers (30′, 30″) filter higher-ordered basis function signals (47′, 47″) generated from an excursion signal 13. The excursion signal 13 exhibits the same phase as a baseline communication signal (12) but has a magnitude that is reduced by a nonlinear threshold (100) when the baseline communication signal (12) exceeds the nonlinear threshold (100) and has a magnitude of zero at other times. The tap coefficients (34) may be formed from proto-coefficients (168) in response to the magnitude of the corresponding portion of the signal being filtered in the adaptive equalizers (30′, 30″).
摘要翻译： RF发射器（10）包括非线性预失真器（24）。非线性预失真器（24）使用自适应均衡器（30'，30“）来实现。通过下变频RF通信信号（16）来开发反馈信号（20）。反馈信号（20）用于驱动用于自适应均衡器（30'，30“）的抽头系数（34）。自适应均衡器（30'，30“）对由偏移信号13产生的高阶基函数信号（47'，47”）进行滤波。偏移信号13表现出与基线通信信号（12）相同的相位，但是当基线通信信号（12）超过非线性阈值（100）时具有被非线性阈值（100）减小的幅度，并具有幅度在其他时间为零。抽头系数（34）可以响应于在自适应均衡器（30'，30“）中被滤波的信号的相应部分的大小而由原系数（168）形成。

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