-
公开(公告)号：WO2016082871A1
公开(公告)日：2016-06-02
申请号：PCT/EP2014/075591
申请日：2014-11-25
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GUSTAVSSON, Ulf , ERIKSSON, Thomas
CPC classification number: H04B7/0456 , H04B7/0617
Abstract: A transmitter for radio transmission to one or more receivers over a channel described at least in part by a channel matrix H, the transmitter comprising a pre-coder connected to an antenna array via a transmit unit, the antenna array comprising a number M of antenna elements a m , m=1,2,…,M, each antenna element am being configured to receive a respective transmit signal component x m from the pre-coder via the transmit unit, the pre-coder being configured to receive a number K m , m=1,2,…,M, to respective transmit signal components x m , the shaping components e m being generated based on a null-space of the channel matrix H and on one or more properties of the transmit unit.
Abstract translation: 用于通过至少部分由信道矩阵H描述的信道向一个或多个接收机进行无线电传输的发射机，所述发射机包括经由发射单元连接到天线阵列的预编码器，所述天线阵列包括数量M的天线 元素am，m = 1,2，...，M，每个天线元件被配置为经由发射单元从预编码器接收相应的发射信号分量xm，所述预编码器被配置为接收数字K
-
公开(公告)号：WO2021002789A1
公开(公告)日：2021-01-07
申请号：PCT/SE2019/050985
申请日：2019-10-08
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GUSTAVSSON, Ulf , WU, Yibo , ERIKSSON, Thomas
Abstract: Efficient amplifier operation. In one aspect, there is a radio transceiver device. The radio transceiver device includes a distorting unit configured to receive an input signal and distort the received input signal, thereby producing a distorted input signal. The radio transceiver device further includes a limiter configured to receive the distorted input signal and produce a limited signal based on the received distorted input signal. The radio transceiver device further includes a power amplifier configured to receive the limited signal and amplify the limited signal, thereby producing an amplified limited signal.
-
公开(公告)号：WO2019117771A1
公开(公告)日：2019-06-20
申请号：PCT/SE2017/051269
申请日：2017-12-14
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GUSTAVSSON, Ulf , ERIKSSON, Thomas , FAGER, Christian
Abstract: A linearization device (380) is disclosed, which is configured to determine pre-distortion parameters associated with a plurality of non-linear amplifiers (331, 332, 333, 334), each associated with a non-linear amplifier characteristic. The linearization device comprises determination circuitry (383), a first port (381) and a second port (382). The first port is configured to receive a plurality of channel coefficients indicative of channel characteristics of a plurality of communication paths (391, 392, 393, 394) between the plurality of non-linear amplifiers and a transmit observation receiver (370). The second port is configured to receive, from the transmit observation receiver, a sum of transmission signals generated by the plurality of non-linear amplifiers and transferred over the plurality of communication paths. The determination circuitry is configured to determine the pre-distortion parameters based on the received plurality of channel coefficients, the received sum of transmission signals, and a model of the non-linear amplifier characteristics of the non-linear amplifiers. Corresponding arrangement, wireless transmitter node, cloud based server node, method and computer program product are also disclosed.
-
4.发明申请APPARATUS AND METHOD FOR IDENTIFICATION AND COMPENSATION OF DISTORTION IN A MULTI-ANTENNA SYSTEM 审中-公开用于识别和补偿多天线系统中的失真的装置和方法
公开(公告)号：WO2017198288A1
公开(公告)日：2017-11-23
申请号：PCT/EP2016/061001
申请日：2016-05-17
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： HAUSMAIR, Katharina , ERIKSSON, Thomas , GUSTAVSSON, Ulf , FAGER, Christian
CPC classification number: H04B1/0475 , H04B1/0483 , H04B7/06 , H04B7/0639 , H04B2001/0425 , H04L25/03343
Abstract: 40 ABSTRACT The disclosure relates to devices, methods, and computer programs in mobile communications in order to reduce signal distortions. Specifically, it relates to a transmitter system which comprises a plurality of signal paths. Each signal path is associated with an input transmission signal. Each signal path comprises an analogue portion of the signal path. Each 5 signal path comprises a Dual-Input Digital Predistortion, DI DPD, module. The DI DPD is configured to provide a predistorted input transmission signal to the analogue portion in response to a received Crosstalk and Mismatch, CTM, signal and the input transmission signal. The transmitter system further comprises one or more CTM modules configured to receive one or more input transmission signals. The CTM module comprises to separately generate for 10 each DI DPD module the CTM signal, where said CTM signals represent CTM distortions caused by one or more output transmission signals of each said analogue portion.
Abstract translation: 摘要本公开涉及移动通信中的设备，方法和计算机程序以减少信号失真。 具体地说，它涉及一种包括多个信号路径的发射机系统。 每个信号路径与输入传输信号相关联。 每个信号路径包括信号路径的模拟部分。 每个5路信号路径都包含一个双输入数字预失真DI DI模块。 DI DPD被配置为响应于接收到的串扰和失配，CTM信号和输入传输信号，向模拟部分提供预失真的输入传输信号。 发射机系统还包括被配置为接收一个或多个输入传输信号的一个或多个CTM模块。 CTM模块包括为每个DI DPD模块分别生成CTM信号，其中所述CTM信号表示由每个所述模拟部分的一个或多个输出传输信号引起的CTM失真。
-
公开(公告)号：WO2017174116A1
公开(公告)日：2017-10-12
申请号：PCT/EP2016/057404
申请日：2016-04-05
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GÄVERT, Björn , NILSSON, Göran , LINDGREN, Robert , ERIKSSON, Thomas
IPC: H04B1/525
Abstract: There is provided mechanisms performed by a control device for suppressing interference in a received reception signal in a radio transceiver device. The radio transceiver device is configured to receive the reception signal as a radio reception signal and to generate a radio transmission signal. The radio transmission signal and the radio reception signal occupy at least partly non- overlapping frequency bands. A method comprises obtaining a transmission reference signal based on the radio transmission signal. The method comprises estimating an interference distortion component signal based on the transmission reference signal and on a model of nonlinearity in a radio circuit of the radio transceiver device. The method comprises suppressing interference in the reception signal by combining the reception signal with the distortion component signal.
Abstract translation: 提供了由控制装置执行的用于抑制无线电收发器装置中的接收到的接收信号中的干扰的机制。 无线电收发器装置被配置为接收接收信号作为无线电接收信号并且生成无线电发送信号。 无线电传输信号和无线电接收信号占据至少部分不重叠的频带。 一种方法包括基于无线传输信号获得传输参考信号。 该方法包括基于传输参考信号以及无线电收发器装置的无线电电路中的非线性模型来估计干扰失真分量信号。 该方法包括通过组合接收信号和失真分量信号来抑制接收信号中的干扰。
-
Patent Agency Ranking
公开(公告)号：WO2020169196A1
公开(公告)日：2020-08-27
申请号：PCT/EP2019/054238
申请日：2019-02-20
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GÄVERT, Björn , ERIKSSON, Thomas , LEIDENHED, Andreas , HELLGREN, Filip
Abstract: A method for reducing distortion in a wireless system, the method comprising; obtaining a distorted signal ( s dist ) comprising at least one dominating signal component (110), where each dominating signal component is comprised in a respective frequency band (115), generating a distortion compensated signal ( s comp ) by minimizing a difference between the distorted signal and an estimated reference signal ( ŝ ), and generating the estimated reference signal ( ŝ ) by filtering the compensated signal by a filter having a filter parameter that determines a frequency response of the filter, wherein the filter parameter is configured such that the filter amplifies signals in the at least one frequency band compared to signals outside of the at least one frequency band.
-
公开(公告)号：WO2017174240A1
公开(公告)日：2017-10-12
申请号：PCT/EP2017/053325
申请日：2017-02-14
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： GÄVERT, Björn , RYDSTRÖM, Mats , NILSSON, Göran , ERIKSSON, Thomas , LINDGREN, Robert
IPC: H04B1/525
Abstract: There is provided mechanisms performed by a control device for suppressing interference in a received reception signal in a radio transceiver device. The radio transceiver device is configured to receive the reception signal as a radio reception signal and to generate a radio transmission signal. The radio transmission signal and the radio reception signal occupy at least partly non-overlapping frequency bands. A method comprises obtaining a transmission reference signal based on the radio transmission signal. The method comprises estimating an interference distortion component signal based on the transmission reference signal and on a model of nonlinearity in a radio circuit of the radio transceiver device. The method comprises suppressing interference in the reception signal by combining the reception signal with the distortion component signal.
Abstract translation: 提供了由控制装置执行的用于抑制无线电收发器装置中的接收到的接收信号中的干扰的机制。 无线电收发器装置被配置为接收接收信号作为无线电接收信号并且生成无线电发送信号。 无线电传输信号和无线电接收信号占据至少部分不重叠的频带。 一种方法包括基于无线传输信号获得传输参考信号。 该方法包括基于传输参考信号以及无线电收发器装置的无线电电路中的非线性模型来估计干扰失真分量信号。 该方法包括通过组合接收信号和失真分量信号来抑制接收信号中的干扰。
-
公开(公告)号：WO2014008914A1
公开(公告)日：2014-01-16
申请号：PCT/EP2012/063386
申请日：2012-07-09
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ) , ERIKSSON, Thomas , RYDSTRÖM, Mats
Inventor： ERIKSSON, Thomas , RYDSTRÖM, Mats
CPC classification number: H04L27/2278 , H04L25/03121 , H04L25/03343 , H04L25/03993 , H04L27/0014 , H04L27/2075 , H04L27/367 , H04L27/3872 , H04L2025/0342 , H04L2027/0018 , H04L2027/0028
Abstract: A transmitter (200) comprising a baseband modulator (105) arranged to modulate a complex baseband signal and to output a complex modulated signal x in (n) with amplitude g and phase q, i.e. x in (n)=g(n)e jq(n) , to the input port of a filter (1 10), the filter (110) in turn having its output coupled to a transmit unit (1 15), said filter (110) being arranged to output a filtered complex output signal x out (n) with amplitude g but phase m, i.e. X out (n)=g(n)e jm(n) , so that the filter is arranged to affect the phase but not the amplitude of its input signal. The filter (110) is arranged to have as its transfer function for the phase of its input signal the z-transform F(z)=1 +wz -1 , where w is a weighting function whose value is determined by means of the additive noise autocorrelation, the phase noise autocorrelation and the signal amplitude of x in .
Abstract translation: 一种发射机（200），包括基带调制器（105），其被配置为调制复基带信号并输出具有振幅g和相位q的复调制信号xin（n），即xin（n）= g（n）ejq（n ）到滤波器（110）的输入端口，滤波器（110）依次具有耦合到发射单元（115）的输出，所述滤波器（110）被布置成输出滤波复合输出信号xout（ n）具有幅度g而是相位m，即Xout（n）= g（n）ejm（n），使得滤波器被布置成影响其输入信号的相位而不影响其幅度。 滤波器（110）被布置为具有用于其输入信号的相位的传递函数，z变换F（z）= 1 + wz-1，其中w是加权函数，其值通过加法器 噪声自相关，相位噪声自相关和信号幅度。
-
公开(公告)号：WO2020236045A1
公开(公告)日：2020-11-26
申请号：PCT/SE2019/050455
申请日：2019-05-17
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： JACOBSSON, Sven , REZAEI AGHDAM, Sina , ERIKSSON, Thomas , FARHADI, Hamed , GUSTAVSSON, Ulf
IPC: H04B7/0456 , H04B7/0417 , H04B7/06
Abstract: There is provided mechanisms for beamformed transmission using a precoder. A method is performed by a radio transceiver device. The radio transceiver device comprises hardware. The hardware impacts transmission of signals from the radio transceiver device. The method comprises acquiring channel conditions of a radio propagation channel between the radio transceiver device and at least one other radio transceiver device. The method comprises determining a precoder, in form of a linear precoding matrix, for beamformed transmission towards the at least one other radio transceiver device. The precoder is determined according to the channel conditions and a model of how the hardware impacts the transmission of signals from the radio transceiver device. The method comprises transmitting, using the precoder, a signal towards the at least one other radio transceiver device.
-
公开(公告)号：WO2019145026A1
公开(公告)日：2019-08-01
申请号：PCT/EP2018/051667
申请日：2018-01-24
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
Inventor： HAUSMAIR, Katharina , GUSTAVSSON, Ulf , ERIKSSON, Thomas , FAGER, Christian
CPC classification number: H03F1/3247 , H03F3/189 , H03F3/24 , H03F3/68 , H03F2201/3233 , H04B17/103 , H04B17/13 , H04B2001/0425
Abstract: A linearization device (380) is disclosed, which is configured to determine pre-distortion parameters associated with a plurality of non-linear amplifiers (331, 332, 333, 334). Each of the non-linear amplifiers is associated with one of a plurality of transmit antenna elements and with a non-linear transfer function defining an output of the non-linear amplifier based on an input of the non-linear amplifier and based on a reflection signal for the non-linear amplifier, resulting from mutual couplings among the plurality of transmit antenna elements. The linearization device comprises a first port (381), a second port (382), and determination circuitry (383). The first port is configured to receive a plurality of channel coefficients indicative of channel characteristics of a plurality of communication paths between the plurality of non-linear amplifiers and two or more transmit observation receivers (370, 371, 372). Each transmit observation receiver is configured to receive a sum of transmission signals generated by the plurality of non-linear amplifiers and transferred over the communication paths between the plurality of non-linear amplifiers and the transmit observation receiver. The second port is configured to receive the sums of transmission signals from the transmit observation receivers. The determination circuitry is configured to determine the pre-distortion parameters based on the received plurality of channel coefficients, the received sums of transmission signals, and a model of the non-linear transfer functions of the non-linear amplifiers.
-
-
-
-
-
-
-
-
-
Search Results
10
records
(took 0.018 seconds)
