公开(公告)号：US09154168B2

公开(公告)日：2015-10-06

申请号：US13894268

申请日：2013-05-14

Applicant: Intel IP Corporation

Inventor： Armando Cova

IPC: H04B1/04 ,  H04L27/26 ,  H04L27/34

CPC classification number: H04B1/0475 ,  H04L27/2626 ,  H04L27/3411

Abstract: A method of reducing a peak to average power ratio (PAR) of a signal may include generating an in-band error signal indicating in-band distortion of a compressed signal and generating an out-of-band error signal indicating out-of-band distortion of the compressed signal. The method may further include applying an in-band gain to the in-band error signal to generate an adjusted in-band error signal and applying an out-of-band gain to the out-of-band error signal to generate an adjusted out-of-band error signal. The method may also include combining the compressed signal with the adjusted in-band error signal and the adjusted out-of-band error signal to generate an output signal. The compressed signal may be combined with the adjusted error signals, and the in-band gain and the out-of-band gain may be based on the output signal such that distortion of the output signal is reduced with respect to distortion of the compressed signal.

Abstract translation: 降低信号的峰均功率比（PAR）的方法可以包括产生表示压缩信号的带内失真的带内误差信号，并产生指示带外的带外误差信号 压缩信号失真。 该方法还可以包括对带内误差信号应用带内增益以产生经调整的带内误差信号，并将带外增益应用于带外误差信号以产生经调整的输出 带内误差信号。 该方法还可以包括将压缩信号与经调整的带内误差信号和调整的带外误差信号组合以产生输出信号。 压缩信号可以与调整的误差信号组合，并且带内增益和带外增益可以基于输出信号，使得输出信号的失真相对于压缩信号的失真减小 。

公开(公告)号：US20210067386A1

公开(公告)日：2021-03-04

申请号：US16958060

申请日：2018-03-30

Applicant: Intel IP Corporation

Inventor： Armando Cova ,  Christoph Hepp ,  Gunther Kraut ,  Andreas Langer

IPC: H04L25/03 ,  H04L25/49 ,  H04L27/34 ,  H04B1/04

Abstract: An apparatus for a mobile communication device adapted for digital pre-distortion that includes a memory and a processor operatively coupled to the memory of the processor. The processor receives a first input signal and also receives a first output signal from a power amplifier that is based on the first input signal. The processor additionally varies compression applied to a second input signal based on the first output signal of the power amplifier, generates a distortion compensation vector for the second input signal based on the first output signal of the power amplifier, and also varies an input excitation signal supplied to the power amplifier based on the first output signal of the power amplifier.

公开(公告)号：US20210067163A1

公开(公告)日：2021-03-04

申请号：US16958034

申请日：2018-03-30

Applicant: Intel IP Corporation

Inventor： Niranjan Karandikar ,  Mohammed Alam ,  Gregory Chance ,  Armando Cova ,  Michael Milyard ,  John J. Parkes, JR. ,  Ashoke Ravi ,  Daniel Schwartz ,  Dong-Jun Yang

IPC: H03L7/085 ,  H04B1/12 ,  H04L25/03 ,  H04B1/18 ,  H04L25/08

Abstract: A wireless communication device can include an antenna configured to sense a radio frequency (RF) signal. The wireless communication device can include signal estimation circuitry configured to generate estimates of amplitude and frequency for unmodulated spurs within the RF signal. The wireless communication device can further include multi-tone generator circuitry coupled to the signal estimation circuitry and configured to generate a composite spur cancellation signal based on the estimates of amplitude and frequency for unmodulated spurs within the RF signal. The wireless communication device can further include adder circuitry configured to subtract the spur cancellation signal from the RF signal to generate a spur cancelled signal.

公开(公告)号：US09787336B1

公开(公告)日：2017-10-10

申请号：US15280392

申请日：2016-09-29

Applicant: Intel IP Corporation

Inventor： Armando Cova

IPC: H04L25/49 ,  H04B1/04

CPC classification number: H04B1/0475 ,  H04B2001/0425

Abstract: Embodiments of a mobile communication device and method for digital pre-distortion (DPD) are disclosed herein. The mobile communication device may scale a sequence of input samples by per-sample scale factors to generate a sequence of output samples for input to a power amplifier (PA), the input samples scaled to compensate for distortion of the PA. The mobile communication device may generate the scale factors based on per-sample inner products between a common weight vector and a per-sample distortion compensation vectors. The mobile communication device may generate the distortion compensation vectors based on vector outputs of predetermined distortion compensation functions. The mobile communication device may update the common weight vector based on a distortion error sequence between the sequence of output samples and a sequence of feedback samples.