公开(公告)号：US20150139358A1

公开(公告)日：2015-05-21

申请号：US14083240

申请日：2013-11-18

Applicant: QUALCOMM INCORPORATED

Inventor： Bhushan Shanti ASURI ,  Thomas Domenick MARRA ,  Mohammad FARAZIAN ,  Gurkanwal Singh SAHOTA

IPC: H04B1/04 ,  H04B17/00

CPC classification number: H04B1/0475 ,  H04B17/10 ,  H04B17/13 ,  H04B2001/0425 ,  H04L27/361 ,  H04L27/367

Abstract: Exemplary embodiments are related to digital pre-distortion in envelope tracking systems. A device may include an amplitude modulation-to-phase modulation (AM-PM) distortion unit configured to generate an AM-PM distortion component in response to receipt of phase data of an input transmit signal. The device may also include a local oscillator (LO) path coupled to the distortion unit and configured to convey a local oscillator (LO) signal that varies based on the AM-PM distortion component.

Abstract translation: 示例性实施例涉及包络跟踪系统中的数字预失真。 设备可以包括被配置为响应于接收到输入发射信号的相位数据而产生AM-PM失真分量的幅度调制 - 相位调制（AM-PM）失真单元。 该装置还可以包括耦合到失真单元并被配置为传送基于AM-PM失真分量变化的本地振荡器（LO）信号的本地振荡器（LO）路径。