Apparatus and method of digital predistortion for power amplifiers with dynamic nonlinearities
    1.
    发明授权
    Apparatus and method of digital predistortion for power amplifiers with dynamic nonlinearities 有权
    具有动态非线性功率放大器的数字预失真装置和方法

    公开(公告)号:US08478210B2

    公开(公告)日:2013-07-02

    申请号:US13104578

    申请日:2011-05-10

    IPC分类号: H04B1/04

    摘要: Power amplifiers (PAs) using a Doherty or other power output level sensitive configuration have been employed for several years in telecommunications (as well as other applications) to take advantage of efficiency gains. For many of these applications, baseband signals are predistorted to compensate for nonlinearities in the PAs, but because there is a “switching event” in a Doherty-type amplifier (for example), the nonlinearities become dynamically varying. As a result, digital predistortion (DPD) becomes increasingly difficult to perform. Here, DPD modules are provided that adapt to changes in dynamically varying PAs based on a determination of the average power or other relevant metric prior to transmission.

    摘要翻译: 使用Doherty或其他功率输出电平敏感配置的功率放大器(PA)在电信(以及其他应用)中已经采用了数年,以利用效率提升。 对于许多这些应用,基带信号被预失真以补偿PA中的非线性,但是由于在Doherty型放大器(例如)中存在“切换事件”,所以非线性变得动态变化。 因此,数字预失真(DPD)变得越来越难以执行。 这里,提供DPD模块,其基于在传输之前的平均功率或其他相关度量的确定来适应动态变化的PA的变化。

    Multi-band power amplifier digital predistortion system and method
    2.
    发明授权
    Multi-band power amplifier digital predistortion system and method 有权
    多波段功率放大器数字预失真系统及方法

    公开(公告)号:US08750410B2

    公开(公告)日:2014-06-10

    申请号:US12888191

    申请日:2010-09-22

    IPC分类号: H04L25/49 H04L27/36 H04L27/00

    摘要: Traditionally, for multi-band communication systems, independent signal chains for each of the different bands are employed. By using such an architecture, there are a large number of components, and there is substantial power consumption. Here, transmit processor is provided that enables transmission across multiple bands using few components (namely, fewer signal chains), while also provided for digital predistortion.

    摘要翻译: 传统上,对于多频带通信系统,采用用于每个不同频带的独立信号链。 通过使用这样的架构,存在大量组件,并且存在大量的功耗。 这里,提供了能够使用少量组件(即较少信号链)在多个频带上进行传输的传输处理器,同时还提供用于数字预失真。

    APPARATUS AND METHOD OF DIGITAL PREDISTORTION FOR POWER AMPLIFIERS WITH DYNAMIC NONLINEARITIES
    3.
    发明申请
    APPARATUS AND METHOD OF DIGITAL PREDISTORTION FOR POWER AMPLIFIERS WITH DYNAMIC NONLINEARITIES 有权
    具有动态非线性功率放大器的数字预测装置和方法

    公开(公告)号:US20120286863A1

    公开(公告)日:2012-11-15

    申请号:US13104578

    申请日:2011-05-10

    IPC分类号: H03F1/26

    摘要: Power amplifiers (PAs) using a Doherty or other power output level sensitive configuration have been employed for several years in telecommunications (as well as other applications) to take advantage of efficiency gains. For many of these applications, baseband signals are predistorted to compensate for nonlinearities in the PAs, but because there is a “switching event” in a Doherty-type amplifier (for example), the nonlinearities become dynamically varying. As a result, digital predistortion (DPD) becomes increasingly difficult to perform. Here, DPD modules are provided that adapt to changes in dynamically varying PAs based on a determination of the average power or other relevant metric prior to transmission.

    摘要翻译: 使用Doherty或其他功率输出电平敏感配置的功率放大器(PA)在电信(以及其他应用)中已经采用了数年,以利用效率提升。 对于许多这些应用,基带信号被预失真以补偿PA中的非线性,但是由于在Doherty型放大器(例如)中存在开关事件,所以非线性变得动态变化。 因此,数字预失真(DPD)变得越来越难以执行。 这里,提供DPD模块,其基于在传输之前的平均功率或其他相关度量的确定来适应动态变化的PA的变化。

    MULTI-BAND POWER AMPLIFIER DIGITAL PREDISTORTION SYSTEM AND METHOD
    4.
    发明申请
    MULTI-BAND POWER AMPLIFIER DIGITAL PREDISTORTION SYSTEM AND METHOD 有权
    多功率放大器数字预测系统及方法

    公开(公告)号:US20120069931A1

    公开(公告)日:2012-03-22

    申请号:US12888191

    申请日:2010-09-22

    IPC分类号: H04L25/49

    摘要: Traditionally, for multi-band communication systems, independent signal chains for each of the different bands are employed. By using such an architecture, there are a large number of components, and there is substantial power consumption. Here, transmit processor is provided that enables transmission across multiple bands using few components (namely, fewer signal chains), while also provided for digital predistortion.

    摘要翻译: 传统上,对于多频带通信系统,采用用于每个不同频带的独立信号链。 通过使用这样的架构,存在大量组件,并且存在大量的功耗。 这里,提供了能够使用少量组件(即较少信号链)在多个频带上进行传输的传输处理器,同时还提供用于数字预失真。

    Robust transmit/feedback alignment
    5.
    发明授权
    Robust transmit/feedback alignment 有权
    稳健的发射/反馈对准

    公开(公告)号:US08437424B2

    公开(公告)日:2013-05-07

    申请号:US12718152

    申请日:2010-03-05

    IPC分类号: H04K1/02 H04L25/03 H04L25/49

    CPC分类号: H04L25/03343

    摘要: Performing digital predistortion (DPD) for widely spaced narrowband signals, such as the signal used in multi-carrier GSM, can be very difficult. Here, a system is provided the performs DPD for widely spaced narrowband signals. In particular, this system uses a polynomial curve for values of a cross-correlation function (above a predetermined threshold) to determine a delay estimate, which allows for a more robust and accurate system.

    摘要翻译: 对于广泛间隔的窄带信号(例如在多载波GSM中使用的信号)执行数字预失真(DPD)可能是非常困难的。 这里,提供了一种用于宽间隔窄带信号的DPD的系统。 特别地,该系统使用用于互相关函数(高于预定阈值)的值的多项式曲线来确定延迟估计,其允许更健壮和准确的系统。

    ROBUST TRANSMIT/FEEDBACK ALIGNMENT
    6.
    发明申请
    ROBUST TRANSMIT/FEEDBACK ALIGNMENT 有权
    鲁棒发送/反馈对齐

    公开(公告)号:US20110216851A1

    公开(公告)日:2011-09-08

    申请号:US12718152

    申请日:2010-03-05

    IPC分类号: H04L25/49 H04L25/03

    CPC分类号: H04L25/03343

    摘要: Performing digital predistortion (DPD) for widely spaced narrowband signals, such as the signal used in multi-carrier GSM, can be very difficult. Here, a system is provided the performs DPD for widely spaced narrowband signals. In particular, this system uses a polynomial curve for values of a cross-correlation function (above a predetermined threshold) to determine a delay estimate, which allows for a more robust and accurate system.

    摘要翻译: 对于广泛间隔的窄带信号(例如在多载波GSM中使用的信号)执行数字预失真(DPD)可能是非常困难的。 这里,提供了一种用于宽间隔窄带信号的DPD的系统。 特别地,该系统使用用于互相关函数(高于预定阈值)的值的多项式曲线来确定延迟估计,其允许更健壮和准确的系统。