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公开(公告)号：US11476809B2
公开(公告)日：2022-10-18
申请号：US16637937
申请日：2017-08-11
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Michael Weber , Bjoern Jelonnek , Jan Hellmann
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).
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公开(公告)号：US09497701B2
公开(公告)日：2016-11-15
申请号：US14753100
申请日：2015-06-29
Applicant: Nokia Solutions and Networks Oy
Inventor： Bjoern Jelonnek , Andree Haubrich , Michael Weber
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。
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公开(公告)号：US09226189B1
公开(公告)日：2015-12-29
申请号：US14462035
申请日：2014-08-18
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Alan Pereira
CPC classification number: H04B17/17
Abstract: At a current time, a current intermodulation content of a predistortion system is determined. An intermodulation ratio is determined using the current intermodulation content and a previous intermodulation content for the predistortion system. The previous intermodulation content is determined at a time previous to the current time. The determined intermodulation ratio is compared with stored intermodulation ratios. A warning is communicated in response to the comparing indicating the predistortion system is unhealthy. Apparatus and computer program products are also disclosed.
Abstract translation: 在当前时间，确定预失真系统的当前互调内容。 使用当前的互调内容和用于预失真系统的先前的互调内容来确定互调比。 先前的互调内容是在当前时间之前的时间确定的。 将确定的互调比与存储的互调比进行比较。 响应于比较表示预失真系统是不健康的，通知警告。 还公开了装置和计算机程序产品。
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Patent Agency Ranking
公开(公告)号：US09755583B2
公开(公告)日：2017-09-05
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
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.
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公开(公告)号：US10931347B2
公开(公告)日：2021-02-23
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
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.
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公开(公告)号：US10135473B2
公开(公告)日：2018-11-20
申请号：US15415461
申请日：2017-01-25
Applicant: NOKIA SOLUTIONS AND NETWORKS OY
Inventor： Armin Fuchs , Bjoern Jelonnek , Michael Weber
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.
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7.发明授权公开(公告)号：US09054652B2
公开(公告)日：2015-06-09
申请号：US14044385
申请日：2013-10-02
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Glenn Schedeen , Sandeep Mehta
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 T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1−Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; 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T1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从（T1-Xd）到（T1 + Xd）的多个非整数分数步长的偏移量，其中T1是整数，Xd是用于定义分数步长的非整数分数步长值 整数T1使得非整数分数步骤在正方向和负方向上进行; 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送信号波形，以及将经补偿的发送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。
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8.发明申请公开(公告)号：US20150091643A1
公开(公告)日：2015-04-02
申请号：US14044385
申请日：2013-10-02
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Glenn Schedeen , Sandeep Mehta
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 T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1−Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; 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T1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从（T1-Xd）到（T1 + Xd）的多个非整数分数步长的偏移量，其中T1是整数，Xd是用于定义分数步长的非整数分数步长值 整数T1使得非整数分数步骤在正方向和负方向上进行; 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送信号波形，以及将经补偿的发送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。
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