公开(公告)号：US09065686B2

公开(公告)日：2015-06-23

申请号：US13683692

申请日：2012-11-21

Applicant: QUALCOMM Incorporated

Inventor： Qinfang Sun ,  Chiao-Cheng Huang ,  Hao-Jen Cheng

IPC: H03D1/04 ,  H04L27/00 ,  H04B1/10

CPC classification number: H04L27/00 ,  H04B1/1027

Abstract: A method and device for processing spur components associated with a received wireless signal are disclosed. In one embodiment, the method includes first selecting a sub-band of a spectral band of the received signal. The selected sub-band is scanned, and a detection routine is executed to detect a spur within the scanned sub-band having a peak magnitude above a predetermined threshold. The spur frequency is determined, and the spur may be removed by a cancellation unit based on the determined frequency. The method also includes tracking the frequency of the spur to ensure continued suppression over time and under dynamic conditions.

Abstract translation: 公开了一种用于处理与接收的无线信号相关联的支线分量的方法和装置。 在一个实施例中，该方法包括首先选择接收信号的频谱带的子带。 扫描所选择的子带，并且执行检测程序以检测具有高于预定阈值的峰值幅度的扫描子带内的杂散。 确定杂散频率，并且基于所确定的频率，消除单元可以去除杂散。 该方法还包括跟踪支线的频率，以确保随时间和动态条件下的持续抑制。

公开(公告)号：US20150280657A1

公开(公告)日：2015-10-01

申请号：US14316296

申请日：2014-06-26

Applicant: QUALCOMM Incorporated

Inventor： Haojen Cheng ,  Hao Zhou ,  Chiao-Cheng Huang

IPC: H03F1/32 ,  H04B1/04

CPC classification number: H03F1/3241 ,  H03F2201/3215 ,  H03F2201/3233 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L25/03343 ,  H04L27/368

Abstract: Methods, systems, and devices are described for adaptive digital pre-distortion (DPD). A wireless device may identify a transmission parameter, such as data rate or transmission power, for a signal to be transmitted by a wireless modem. The wireless device may then select a power amplification response based on whether the transmission parameter exceeds a threshold. A non-linear power amplification response may be selected in cases when the data rate is low or the transmission power is high. A linear power amplification response may be selected when the data rate is high or the transmission power is low. The power amplification response may be achieved by digital distortion of the signal prior to power amplification, so selection of the response may involve adjusting a DPD compensation circuit. In some cases, the output for the non-linear response may be characterized by a Rapp model.

Abstract translation: 描述了用于自适应数字预失真（DPD）的方法，系统和设备。 无线设备可以识别要由无线调制解调器发送的信号的传输参数，例如数据速率或传输功率。 然后，无线设备可以基于传输参数是否超过阈值来选择功率放大响应。 在数据速率低或发送功率高的情况下，可以选择非线性功率放大响应。 当数据速率高或发送功率低时，可以选择线性功率放大响应。 功率放大响应可以通过功率放大之前的信号的数字失真来实现，因此响应的选择可以涉及调整DPD补偿电路。 在某些情况下，非线性响应的输出可以由Rapp模型表征。

公开(公告)号：US20140355714A1

公开(公告)日：2014-12-04

申请号：US13909478

申请日：2013-06-04

Applicant: QUALCOMM Incorporated

Inventor： Hao-Jen Cheng ,  Chiao-Cheng Huang ,  Hao Zhou

IPC: H04L27/36 ,  H03F1/32

CPC classification number: H04L27/368 ,  H03F1/3247

Abstract: A configurable pre-emphasis filter component may be configured based upon measured frequency response (e.g., filter effect) associated with at least one analog filter positioned between a digital predistortion component and a power amplification component of a transmission circuitry. The frequency response may be measured using a calibration signal sent via the transmission circuitry, a loopback circuit, and a reception circuitry. Calibration circuitry may be used with one or more loopback circuits to measure the frequency response of various analog components of the transmission circuitry. The calibration circuitry may also include logic to determine a configuration for the PEF component based upon the measured frequency response.

Abstract translation: 可以基于与位于传输电路的数字预失真部件和功率放大部件之间的至少一个模拟滤波器相关联的测量的频率响应（例如滤波器效应）来配置可配置的预加重滤波器部件。 可以使用经由传输电路，环回电路和接收电路发送的校准信号来测量频率响应。 校准电路可以与一个或多个环回电路一起使用，以测量传输电路的各种模拟部件的频率响应。 校准电路还可以包括基于所测量的频率响应确定PEF分量的配置的逻辑。