公开(公告)号：US20080232268A1

公开(公告)日：2008-09-25

申请号：US12052991

申请日：2008-03-21

申请人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

发明人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

IPC分类号： H04J1/16

CPC分类号： H04B1/525 ,  H04B1/30

摘要： A transmit signal second-order inter-modulation (IM2) canceller for a portable handset using a full duplex mode of operation (e.g., WCDMA) is used to controllably reduce IM2 introduced by a transmit signal that appears in a received signal in a receive channel of the portable handset. The transmit signal IM2 canceller includes a delay estimator and a digital signal adjuster. The delay estimator receives a first input from a receive channel and a second input from a transmit channel. The delay estimator generates an estimate of the IM2 that the transmit channel introduces in the receive channel. The digital signal adjuster removes the estimate of the IM2 before forwarding a modified receive channel signal to a baseband subsystem of the portable handset.

摘要翻译： 使用用于使用全双工操作模式（例如，WCDMA）的便携式手持机的发射信号二阶互调制（IM 2）消除器可控制地减少出现在接收信号中的发射信号引入的IM 2 接收便携式手机的通道。 发送信号IM 2消除器包括延迟估计器和数字信号调节器。 延迟估计器从接收信道接收第一输入，并从发送信道接收第二输入。 延迟估计器产生发送信道在接收信道中引入的IM 2的估计。 在将修改的接收信道信号转发到便携式手持机的基带子系统之前，数字信号调节器去除IM 2的估计。

公开(公告)号：US20110116403A1

公开(公告)日：2011-05-19

申请号：US12947905

申请日：2010-11-17

申请人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

发明人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

IPC分类号： H04W24/00

CPC分类号： H04B1/0475 ,  H04B1/30 ,  H04B1/525 ,  H04L25/03878

摘要： A transmit signal second-order inter-modulation (IM2) canceller for a portable handset using a full duplex mode of operation (e.g., WCDMA) is used to controllably reduce IM2 introduced by a transmit signal that appears in a received signal in a receive channel of the portable handset. The transmit signal IM2 canceller includes a delay estimator and a digital signal adjuster. The delay estimator receives a first input from a receive channel and a second input from a transmit channel. The delay estimator generates an estimate of the IM2 that the transmit channel introduces in the receive channel. The digital signal adjuster removes the estimate of the IM2 before forwarding a modified receive channel signal to a baseband subsystem of the portable handset.

摘要翻译： 用于使用全双工操作模式（例如，WCDMA）的便携式手机的发射信号二阶互调制（IM2）消除器被用于可控制地减少出现在接收信道中的接收信号中的发射信号引入的IM2 的便携式手机。 发送信号IM2消除器包括延迟估计器和数字信号调节器。 延迟估计器从接收信道接收第一输入，并从发送信道接收第二输入。 延迟估计器产生发送信道在接收信道中引入的IM2的估计。 在将修改的接收信道信号转发到便携式手持机的基带子系统之前，数字信号调节器去除IM2的估计。

公开(公告)号：US08855029B2

公开(公告)日：2014-10-07

申请号：US12947905

申请日：2010-11-17

申请人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

发明人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

IPC分类号： H04B1/44 ,  H04B1/30 ,  H04B1/04 ,  H04B1/52 ,  H04B7/212 ,  H04B1/38 ,  H04L5/16 ,  H03D1/04 ,  H04L25/03

CPC分类号： H04B1/0475 ,  H04B1/30 ,  H04B1/525 ,  H04L25/03878

摘要： A transmit signal second-order inter-modulation (IM2) canceller for a portable handset using a full duplex mode of operation (e.g., WCDMA) is used to controllably reduce IM2 introduced by a transmit signal that appears in a received signal in a receive channel of the portable handset. The transmit signal IM2 canceller includes a delay estimator and a digital signal adjuster. The delay estimator receives a first input from a receive channel and a second input from a transmit channel. The delay estimator generates an estimate of the IM2 that the transmit channel introduces in the receive channel. The digital signal adjuster removes the estimate of the IM2 before forwarding a modified receive channel signal to a baseband subsystem of the portable handset.

摘要翻译： 用于使用全双工操作模式（例如，WCDMA）的便携式手机的发射信号二阶互调制（IM2）消除器被用于可控制地减少出现在接收信道中的接收信号中的发射信号引入的IM2 的便携式手机。 发送信号IM2消除器包括延迟估计器和数字信号调节器。 延迟估计器从接收信道接收第一输入，并从发送信道接收第二输入。 延迟估计器产生发送信道在接收信道中引入的IM2的估计。 在将修改的接收信道信号转发到便携式手持机的基带子系统之前，数字信号调节器去除IM2的估计。

公开(公告)号：US08050201B2

公开(公告)日：2011-11-01

申请号：US12052991

申请日：2008-03-21

申请人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

发明人： Masoud Kahrizi ,  Jaleh Komaili ,  John E. Vasa

IPC分类号： H04B7/005

CPC分类号： H04B1/525 ,  H04B1/30

摘要： A transmit signal second-order inter-modulation (IM2) canceller for a portable handset using a full duplex mode of operation (e.g., WCDMA) is used to controllably reduce IM2 introduced by a transmit signal that appears in a received signal in a receive channel of the portable handset. The transmit signal IM2 canceller includes a delay estimator and a digital signal adjuster. The delay estimator receives a first input from a receive channel and a second input from a transmit channel. The delay estimator generates an estimate of the IM2 that the transmit channel introduces in the receive channel. The digital signal adjuster removes the estimate of the IM2 before forwarding a modified receive channel signal to a baseband subsystem of the portable handset.

摘要翻译： 使用用于使用全双工操作模式（例如，WCDMA）的便携式手机的发送信号二阶互调制（IM2）消除器可控制地减少出现在接收信道中的接收信号中的发送信号引入的IM2 的便携式手机。 发送信号IM2消除器包括延迟估计器和数字信号调节器。 延迟估计器从接收信道接收第一输入，并从发送信道接收第二输入。 延迟估计器产生发送信道在接收信道中引入的IM2的估计。 在将修改的接收信道信号转发到便携式手持机的基带子系统之前，数字信号调节器去除IM2的估计。

公开(公告)号：US08874051B2

公开(公告)日：2014-10-28

申请号：US13310434

申请日：2011-12-02

申请人： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

发明人： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

IPC分类号： H04B1/04 ,  H03G3/30

CPC分类号： H04L1/0033 ,  H03F1/0211 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/465 ,  H03G3/3042

摘要： A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.

摘要翻译： 发射机通过修改可变增益放大器的控制输入来调整发射功率电平。 功率放大器控制系统包括信封提取器，误差提取器和前馈乘法器。 信封提取器接收数据信号输入并计算组合信号的包络。 误差提取器产生作为组合信号和功率放大器产生的输出功率的函数的误差信号。 前馈乘法器产生响应于反馈路径中的增益的函数的修改的误差信号。 还公开了一种用于控制功率电平的相应方法。 在一些实施例中，具有功率控制环路的发射链用于调整在可变增益放大器的输入处施加的发射信号功率。 还包括用于调整发射信号功率电平的相应方法。

公开(公告)号：US20120170624A1

公开(公告)日：2012-07-05

申请号：US13310434

申请日：2011-12-02

申请人： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

发明人： Dmitriy Rozenblit ,  Masoud Kahrizi ,  Jaleh Komaili ,  Rajasekhar Pullela ,  Shahrzad Tadjpour

IPC分类号： H04W52/20 ,  H04B1/40 ,  H04L25/49

CPC分类号： H04L1/0033 ,  H03F1/0211 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/465 ,  H03G3/3042

摘要： A transmitter adjusts a transmitted power level by modifying a control input of a variable gain amplifier. A power amplifier control system includes an envelope extractor, an error extractor, and a feed-forward multiplier. The envelope extractor receives data signal inputs and computes the envelope of the combined signal. The error extractor generates an error signal as a function of the combined signal and the output power generated by the power amplifier. The feed-forward multiplier generates a modified error signal that is responsive to a function of the gain in a feedback path. A corresponding method for controlling a power level is also disclosed. In some embodiments, a transmit chain with a power control loop is used to adjust the transmit signal power applied at an input of a variable gain amplifier. A corresponding method for adjusting the transmit signal power level is also included.

摘要翻译： 发射机通过修改可变增益放大器的控制输入来调整发射功率电平。 功率放大器控制系统包括信封提取器，误差提取器和前馈乘法器。 信封提取器接收数据信号输入并计算组合信号的包络。 误差提取器产生作为组合信号和功率放大器产生的输出功率的函数的误差信号。 前馈乘法器产生响应于反馈路径中的增益的函数的修改的误差信号。 还公开了一种用于控制功率电平的相应方法。 在一些实施例中，具有功率控制环路的发射链用于调整在可变增益放大器的输入处施加的发射信号功率。 还包括用于调整发射信号功率电平的相应方法。

公开(公告)号：US20080051042A1

公开(公告)日：2008-02-28

申请号：US11510465

申请日：2006-08-25

申请人： Jaleh Komaili ,  John E. Vasa ,  Morten Damgaard ,  David S. Ripley

发明人： Jaleh Komaili ,  John E. Vasa ,  Morten Damgaard ,  David S. Ripley

IPC分类号： H04B1/04

CPC分类号： H04B1/0475 ,  H03F1/3241 ,  H03F1/3288 ,  H03F3/195 ,  H03F3/24 ,  H03F2201/3233 ,  H04B2001/0425

摘要： An adaptive predistortion system for controlling an open loop power amplifier includes a transmitter, a receiver, a phase and amplitude determination element configured to determine amplitude and phase characteristics of an output signal generated in the transmitter, the signal representing transmitter characteristics, an amplitude resampling element configured to generate an updated AM-AM predistortion signal based on the output signal generated in the transmitter, and an amplitude predistortion element configured to compare the updated AM-AM predistortion signal with a factory-calibrated AM-AM predistortion signal and generate an amplitude compensation signal. The adaptive predistortion system also includes a phase comparison element configured to compare the signal representing transmitter characteristics with a desired phase signal, a phase resampling element configured to generate an updated AM-PM predistortion signal based on the output signal generated in the transmitter, and a phase predistortion element configured to compare the updated AM-PM predistortion signal with a factory-calibrated AM-PM predistortion signal and generate a phase compensation signal.

摘要翻译： 用于控制开环功率放大器的自适应预失真系统包括发射机，接收机，相位和幅度确定元件，其被配置为确定在发射机中产生的输出信号的幅度和相位特性，表示发射机特性的信号，幅度重采样元件 被配置为基于在所述发射机中产生的输出信号产生更新的AM-AM预失真信号，以及幅度预失真元件，其被配置为将所述更新的AM-AM预失真信号与出厂校准的AM-AM预失真信号进行比较，并产生振幅补偿 信号。 自适应预失真系统还包括相位比较元件，其被配置为将表示发射机特性的信号与期望的相位信号进行比较;相位重采样元件，被配置为基于在发射机中产生的输出信号生成更新的AM-PM预失真信号，以及 相位预失真元件，被配置为将更新的AM-PM预失真信号与出厂校准的AM-PM预失真信号进行比较，并产生相位补偿信号。

公开(公告)号：US20120134402A1

公开(公告)日：2012-05-31

申请号：US13361247

申请日：2012-01-30

申请人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

发明人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

IPC分类号： H04B17/00

CPC分类号： H04L27/3809 ,  H03G3/3089 ,  H04L27/2647

摘要： A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine.

摘要翻译： 系统以WCDMA模式提供闭环增益控制，并以EDGE / GSM模式提供开环控制。 增益控制分布在无线接收机中的模拟设备和数字定标器上。 在WCDMA模式中，环路滤波器产生转发到模拟和数字控制路径的错误信号。 模拟控制路径包括第一加法器，可编程滞后元件和查找表。 模拟控制信号响应于当与先前增益值结合使用时确定新的增益值的阈值。 数字控制路径包括第二加法器，可编程延迟元件和转换器。 控制字响应误差信号，校准值和模拟控制信号的差异。 在WCDMA操作模式中提供阻塞检测。 控制器使用状态机设置系统参数。

公开(公告)号：US08126094B2

公开(公告)日：2012-02-28

申请号：US12349787

申请日：2009-01-07

申请人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

发明人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

IPC分类号： H04L27/08

CPC分类号： H04L27/3809 ,  H03G3/3089 ,  H04L27/2647

摘要： A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine.

摘要翻译： 系统以WCDMA模式提供闭环增益控制，并以EDGE / GSM模式提供开环控制。 增益控制分布在无线接收机中的模拟设备和数字定标器上。 在WCDMA模式中，环路滤波器产生转发到模拟和数字控制路径的错误信号。 模拟控制路径包括第一加法器，可编程滞后元件和查找表。 模拟控制信号响应于当与先前增益值结合使用时确定新的增益值的阈值。 数字控制路径包括第二加法器，可编程延迟元件和转换器。 控制字响应误差信号，校准值和模拟控制信号的差异。 在WCDMA操作模式中提供阻塞检测。 控制器使用状态机设置系统参数。

公开(公告)号：US08565358B2

公开(公告)日：2013-10-22

申请号：US13361247

申请日：2012-01-30

申请人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

发明人： Jaleh Komaili ,  John E. Vasa ,  Thomas Obkircher

IPC分类号： H04B17/00

CPC分类号： H04L27/3809 ,  H03G3/3089 ,  H04L27/2647

摘要： A system provides closed-loop gain control in a WCDMA mode and open loop control in an EDGE/GSM mode. Gain control is distributed across analog devices and a digital scaler in a wireless receiver. In the WCDMA mode, a loop filter generates an error signal that is forwarded to analog and digital control paths. The analog control path includes a first adder, a programmable hysteresis element, and a lookup table. The analog control signal is responsive to thresholds, which when used in conjunction with a previous gain value determine a new gain value. The digital control path includes a second adder, a programmable delay element, and a converter. A control word is responsive to a difference of the error signal, a calibration value, and the analog control signal. Blocker detection is provided in the WCDMA mode of operation. A controller sets system parameters using a state machine.