公开(公告)号：US20050226345A1

公开(公告)日：2005-10-13

申请号：US11085695

申请日：2005-03-21

申请人： Gerard Klahn ,  Robert Troiano ,  Fryderyk Tyra ,  Timothy Axness

发明人： Gerard Klahn ,  Robert Troiano ,  Fryderyk Tyra ,  Timothy Axness

IPC分类号： H04B1/04 ,  H04B1/38

CPC分类号： H04B1/0475

摘要： Apparatus for reducing adjacent channel interference between proximate wireless communication units. Each wireless communication unit includes a digital baseband circuit and an analog baseband circuit. The digital baseband circuit includes at least one group delay compensation equalizer and at least one finite-impulse response (FIR) filter. The analog baseband circuit includes a radio (transmitter section), a power amplifier and a narrowband filter. The narrowband filter compensates for deficiencies of the power amplifier including distortion and radio frequency (RF) power spill over. The group delay compensation filter compensates for undesired characteristics (e.g., group delay variation) exhibited by the narrowband filter.

摘要翻译： 用于减少邻近无线通信单元之间的相邻信道干扰的装置。 每个无线通信单元包括数字基带电路和模拟基带电路。 数字基带电路包括至少一个组延迟补偿均衡器和至少一个有限脉冲响应（FIR）滤波器。 模拟基带电路包括无线电（发射机部分），功率放大器和窄带滤波器。 窄带滤波器补偿功率放大器的缺陷，包括失真和射频（RF）功率溢出。 组延迟补偿滤波器补偿窄带滤波器所呈现的不期望的特性（例如，组延迟变化）。

公开(公告)号：US20050227640A1

公开(公告)日：2005-10-13

申请号：US11022703

申请日：2004-12-27

申请人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

发明人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

IPC分类号： H03C1/62 ,  H03G3/30 ,  H04B1/04 ,  H04B1/46 ,  H04B7/005 ,  H04B17/00

CPC分类号： H04B1/0458 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/465 ,  H03G3/3042 ,  H04W52/52 ,  Y02D70/14

摘要： A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.

摘要翻译： 一种用于动态调整发射机功率放大器（PA）和天线之间的阻抗以有效地将功率从PA传输到天线的方法和装置。 根据PA是线性PA还是开关模式PA，PA和天线之间的阻抗根据功率电平测量和/或PA直流（DC）消耗测量值进行调整。 在另一个实施例中，包括第一级线性PA和第二级开关模式PA的混合PA实现在发射机中。 根据第一级线性PA的输出功率电平，混合PA选择性地将第一级线性PA的输出连接到第二级开关模式PA的输入和混合PA的输出之一，输出功率 混合PA的电平或由发射功率控制（TPC）指令指示的要求。

公开(公告)号：US06714769B2

公开(公告)日：2004-03-30

申请号：US10328663

申请日：2002-12-23

申请人： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

发明人： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

IPC分类号： H03C702

CPC分类号： H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

摘要： Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink wherein priority is given to the antenna receiving a better quality signal. Measurements are taken during each time slot to determine the weighting to be given to the antenna with the better quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal the techniques described herein may be used individual, and in some cases are combined to receive additional benefits in efficiency.

摘要翻译： 用于通过公共射频（RF）链将信号从多个天线向下传输到基带的方法和装置。 天线选择对于上行链路和下行链路具有更大的灵活性和适用性，其中优先给予接收更好质量信号的天线。 在每个时隙期间进行测量，以确定要以更好的质量信号给予天线的加权。 提供技术和装置以在从时隙到单个符号的间隔范围内进行测量，例如，选择最佳信号，本文所描述的技术可以被单独使用，并且在一些情况下被组合以在效率上接收额外的益处。

公开(公告)号：US09602144B2

公开(公告)日：2017-03-21

申请号：US11156745

申请日：2005-06-20

申请人： Erica Ellyn Aycin ,  Gerard Klahn ,  Tanbir Haque

发明人： Erica Ellyn Aycin ,  Gerard Klahn ,  Tanbir Haque

IPC分类号： H03D7/16 ,  H04B1/00

CPC分类号： H04B1/0057 ,  H04B1/0071 ,  H04B1/0085

摘要： The present invention is related to a method and apparatus for processing multiple wireless communication services in a receiver. A receiver receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer and a local oscillator (LO). The LO frequencies are set such that the down-converted IF bands of the multiple services are fallen into a single IF band.

公开(公告)号：US07660561B2

公开(公告)日：2010-02-09

申请号：US10769690

申请日：2004-01-22

申请人： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

发明人： Leonid Kazakevich ,  Gerard Klahn ,  Fatih Ozluturk

IPC分类号： H03C7/02

CPC分类号： H04B7/0868 ,  H04B7/0811 ,  H04B7/0857

摘要： Method and apparatus for transfer of signals from multiple antennas down to baseband over a common radio frequency (RF) chain. Antenna selection having greater flexibility and applicability to both uplink and downlink is obtained by giving priority to the antenna receiving a better/best quality signal. Measurements are taken by at least a channel estimator during each time slot to determine the weighting to be given to the antenna with the better/best quality signal. Techniques and apparatus are provided to take measurements over a range of intervals from time slots to single symbols, for example, to select the best signal. The techniques described herein may be used individually, and in some cases are combined to receive additional benefits in efficiency. For example, one or more of recent and/or current channel estimation, history, optimization may be employed, in addition to channel estimation, to determine signal quality.

摘要翻译： 用于通过公共射频（RF）链将信号从多个天线向下传输到基带的方法和装置。 通过优先考虑接收更好/最佳质量信号的天线，获得对上行链路和下行链路具有更大灵活性和适用性的天线选择。 在每个时隙期间由至少一个信道估计器进行测量，以确定将以更好/最佳质量信号给予天线的加权。 提供了技术和装置，以在从时隙到单个符号的间隔范围内进行测量，例如选择最佳信号。 本文描述的技术可以单独使用，并且在一些情况下被组合以获得效率的附加益处。 例如，除了信道估计之外，可以采用近期和/或当前信道估计，历史，优化中的一个或多个来确定信号质量。

公开(公告)号：US07379714B2

公开(公告)日：2008-05-27

申请号：US11022703

申请日：2004-12-27

申请人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

发明人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

IPC分类号： H04B1/02

CPC分类号： H04B1/0458 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/465 ,  H03G3/3042 ,  H04W52/52 ,  Y02D70/14

摘要： A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.

摘要翻译： 一种用于动态调整发射机功率放大器（PA）和天线之间的阻抗以有效地将功率从PA传输到天线的方法和装置。 根据PA是线性PA还是开关模式PA，PA和天线之间的阻抗根据功率电平测量和/或PA直流（DC）消耗测量值进行调整。 在另一个实施例中，包括第一级线性PA和第二级开关模式PA的混合PA实现在发射机中。 根据第一级线性PA的输出功率电平，混合PA选择性地将第一级线性PA的输出连接到第二级开关模式PA的输入和混合PA的输出之一，输出功率 混合PA的电平或由发射功率控制（TPC）指令指示的要求。

公开(公告)号：US20080214125A1

公开(公告)日：2008-09-04

申请号：US12121092

申请日：2008-05-15

申请人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

发明人： Tanbir Haque ,  Alpaslan Demir ,  Leonid Kazakevich ,  Gerard Klahn

IPC分类号： H04B1/40 ,  H04B1/04

CPC分类号： H04B1/0458 ,  H03F1/0261 ,  H03F1/56 ,  H03F3/24 ,  H03F2200/207 ,  H03F2200/465 ,  H03G3/3042 ,  H04W52/52 ,  Y02D70/14

摘要： A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.

摘要翻译： 一种用于动态调整发射机功率放大器（PA）和天线之间的阻抗以有效地将功率从PA传输到天线的方法和装置。 根据PA是线性PA还是开关模式PA，PA和天线之间的阻抗根据功率电平测量和/或PA直流（DC）消耗测量值进行调整。 在另一个实施例中，包括第一级线性PA和第二级开关模式PA的混合PA实现在发射机中。 根据第一级线性PA的输出功率电平，混合PA选择性地将第一级线性PA的输出连接到第二级开关模式PA的输入和混合PA的输出之一，输出功率 混合PA的电平或由发射功率控制（TPC）指令指示的要求。

公开(公告)号：US20060046773A1

公开(公告)日：2006-03-02

申请号：US11156745

申请日：2005-06-20

申请人： Erica Aycin ,  Gerard Klahn ,  Tanbir Haque

发明人： Erica Aycin ,  Gerard Klahn ,  Tanbir Haque

IPC分类号： H04B7/08 ,  H04M1/00

CPC分类号： H04B1/0057 ,  H04B1/0071 ,  H04B1/0085

摘要： The present invention is related to a method and apparatus for processing multiple wireless communication services in a receiver. A receiver receives more than one wireless communication service simultaneously via a wireless interface. Each service is transmitted via a different carrier frequency band. The multiple received carrier signals are down-converted to an intermediate frequency (IF) band using a mixer and a local oscillator (LO). The LO frequencies are set such that the down-converted IF bands of the multiple services are fallen into a single IF band.

摘要翻译： 本发明涉及一种在接收机中处理多个无线通信服务的方法和装置。 接收机通过无线接口同时接收多于一个的无线通信服务。 每个服务通过不同的载波频带传输。 使用混频器和本地振荡器（LO）将多个接收的载波信号下变频到中频（IF）频带。 LO频率被设置为使得多个服务的下变频IF频带落入单个IF频带。

公开(公告)号：US20060045126A1

公开(公告)日：2006-03-02

申请号：US11167341

申请日：2005-06-27

申请人： Gerard Klahn ,  Fryderyk Tyra ,  John Haim ,  Tanbir Haque

发明人： Gerard Klahn ,  Fryderyk Tyra ,  John Haim ,  Tanbir Haque

IPC分类号： H04J3/16

CPC分类号： H04B1/28 ,  H04B1/0021

摘要： The present invention is related to a method and apparatus for adaptively selecting local oscillator (LO) and sampling frequencies for analog-to-digital conversion of a plurality of input signals for transmitting two or more services via two or more frequency bands. Each input signal carries a different service via a different frequency band. Each service is subject to a minimum signal-to-interference, noise and distortion ratio (SINAD) requirement. The input signals are converted to an intermediate frequency (IF) band signals by mixing the input signals with LO signals. The LO and sampling frequencies are adjusted such that the converted IF band signals of the input signals are spectrally adjacent or overlapping each other to some degree. SINAD of the services is measured at each of a plurality of spectrally overlapping conditions. The LO frequencies and the sampling frequency are then adjusted based on the SINAD measurement results.

摘要翻译： 本发明涉及用于自适应地选择本地振荡器（LO）的采样频率和用于多个输入信号的模数转换的采样频率，用于经由两个或多个频带发送两个或多个服务。 每个输入信号经由不同的频带承载不同的服务。 每个服务都受到最小的信号干扰，噪声和失真比​​（SINAD）要求。 输入信号通过将输入信号与LO信号混合而转换成中频（IF）频带信号。 调整LO和采样频率使得输入信号的转换的IF频带信号在某种程度上彼此频谱相邻或重叠。 在多个频谱重叠条件中的每一个处测量服务的SINAD。 然后根据SINAD测量结果调整LO频率和采样频率。