公开(公告)号：US20200186103A1

公开(公告)日：2020-06-11

申请号：US16637937

申请日：2017-08-11

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Michael WEBER ,  Bjoern JELONNEK ,  Jan HELLMANN

IPC: H03F1/32 ,  H03F3/24 ,  H04B1/04

Abstract: A method comprises obtaining a transmission signal to be power-amplified in a power amplifier (361) prior to transmission; separating the transmission signal into two or more polyphase components of the transmission signal; feeding one or more polyphase components of the transmission signal comprised in the two or more polyphase components to each of two or more parallel predistortion circuits (320,321,322); selecting a dedicated predistortion model and dedicated predistortion coefficients for each of the two or more parallel predistortion circuits (320,321,322); performing non-linear memory-based modeling on the transmission signal according to the selected dedicated predistortion models and coefficients using the one or more polyphase components; and combining output signals of the two or more parallel predistortion circuits (320,321,322) to form a predistorted transmission signal (y[n]) to be applied to the power amplifier (361).

公开(公告)号：US20180212632A1

公开(公告)日：2018-07-26

申请号：US15415461

申请日：2017-01-25

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Armin FUCHS ,  Bjoern JELONNEK ,  Michael WEBER

IPC: H04B1/04 ,  H04L29/06

CPC classification number: H04B1/0483 ,  H04B1/0475 ,  H04B2001/0425 ,  H04L69/04

Abstract: Various antennas may benefit from improved signaling. For example, it may be helpful for a signal in a high occupied bandwidth environment to be compressed using a block floating point format, which can also help to reduce power consumption. A method may include separating an incoming signal at a digital front end or a converter into two alternating signals comprising a coarse signal and a fine signal. The method may also include transmitting the coarse signal and the fine signal from the digital front end to the converter or from the converter to the digital front end. The coarse signal and the fine signal may be combined to generate an approximation of the incoming signal.

公开(公告)号：US20160073337A1

公开(公告)日：2016-03-10

申请号：US14753100

申请日：2015-06-29

Applicant: Nokia Solutions and Networks Oy

Inventor： Bjoern JELONNEK ,  Andree HAUBRICH ,  Michael WEBER

IPC: H04W52/02 ,  H04W24/08 ,  H04B1/04

CPC classification number: H04W52/02 ,  H03F3/24 ,  H04B1/0475 ,  H04B2001/0408 ,  H04W24/08 ,  H04W52/0216 ,  H04W52/028 ,  Y02D70/1222 ,  Y02D70/1224 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/146 ,  Y02D70/25

Abstract: A method including determining whether a transmitter of an apparatus has information to transmit; and causing a power amplifier of said apparatus to enter a first power state in response to said determining; wherein said determining is carried out within a radio portion of said apparatus.

Abstract translation: 一种方法，包括确定装置的发射机是否具有要发射的信息; 以及使所述装置的功率放大器响应于所述确定而进入第一功率状态; 其中所述确定在所述装置的无线电部分内进行。

公开(公告)号：US20160254788A1

公开(公告)日：2016-09-01

申请号：US15026324

申请日：2014-10-01

Applicant: NOKIA SOLUTIONS AND NETWORKS OY

Inventor： Shavantha KULARATNA ,  Christian REICHL ,  Bjoern JELONNEK ,  Alan PEREIRA ,  Glenn SCHEDEEN ,  Sandeep MEHTA

IPC: H03F1/32 ,  H03F3/213 ,  H04B1/04 ,  H03F3/195

CPC classification number: H03F1/3247 ,  H03F1/02 ,  H03F3/19 ,  H03F3/195 ,  H03F3/21 ,  H03F3/213 ,  H03F3/24 ,  H03F2200/336 ,  H03F2200/451 ,  H03F2201/3227 ,  H04B1/0475 ,  H04B1/40 ,  H04B2001/0416 ,  H04B2001/045

Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer TI; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets including a plurality of non-integer fractional steps; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.

Abstract translation: 通过确定由整数TI表示的粗略时间延迟来增强RF功率放大器的互调性能; 确定RF功率放大器的发射信号波形的参考点; 将波形移位一组包括多个非整数分数步长的偏移量; 将发送的信号波形与反馈信号波形相关，以获得每个相应分数步骤的相应相关值; 通过选择具有最高各自的相关值的分数步骤来获得精确的分数延迟值; 将所获得的正确分数延迟值应用于所发送的信号波形以提供经补偿的发射信号波形，并将补偿的发射信号波形与反馈信号波形组合以减少RF功率放大器的至少一个互调乘积。

公开(公告)号：US20200212975A1

公开(公告)日：2020-07-02

申请号：US16313616

申请日：2017-07-03

Applicant: Nokia Solutions and Networks Oy

Inventor： Bjoern JELONNEK ,  Gunter WOLFF ,  Charles NADER ,  Frank DECHEN

IPC: H04B7/06 ,  H04B1/04 ,  H03F3/24 ,  H03F1/32

Abstract: Linearizing Power Amplifiers' Outputs in Multi-Antenna System There is provided power efficient and simple structure for linearizing power amplifiers' outputs in multi-antenna beamforming systems. Beamforming factors are obtained for controlling transmission beams of the antennas in an analogue/hybrid beamforming system. At least one power amplifier model is determined on the basis of the power amplifiers' outputs and the beamforming factors. Predistortion parameters, for feeding a predistorted signal to power amplifiers for linearizing the power amplifiers' outputs, are determined such that after the operating parameters of the power amplifiers have been adjusted, errors in power amplifiers' outputs are reduced.

公开(公告)号：US20190199295A1

公开(公告)日：2019-06-27

申请号：US16311742

申请日：2017-06-19

Applicant: Nokia Solutions and Networks Oy

Inventor： Charles NADER ,  Bjoern JELONNEK

IPC: H03F1/32 ,  H03F3/189

CPC classification number: H03F1/3247 ,  H03F1/3252 ,  H03F1/3258 ,  H03F1/3276 ,  H03F3/189 ,  H03F3/211

Abstract: It is provided a method for providing feedback to pre-distorters in branches of a MISO system such that the pre-distortion cancels distortions caused by the signal path and the combiner combining the signals from the branches into which input signals are input. The method includes generating uncorrelated noises and mixing them with the input signals, evaluating the output of the combiner based on the input signals and the noises in order to determine a respective contribution of each input signal to the output of the combiner, and accordingly determining an appropriate pre-distortion. The signal path may apply a non-linear and/or dynamic function on the signal.