公开(公告)号：WO2016155839A1

公开(公告)日：2016-10-06

申请号：PCT/EP2015/057375

申请日：2015-04-02

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： GUSTAVSSON, Ulf ,  JACOBSSON, Sven ,  DURISI, Giuseppe ,  BJÖRK, Vimar ,  COLDREY, Mikael ,  SUNDSTRÖM, Lars

IPC: H04B7/08 ,  H03M1/12 ,  H04B1/06 ,  H04B1/16 ,  H04B1/30

CPC classification number: H04B7/0885 ,  H04B1/06 ,  H04B1/16 ,  H04B7/0417 ,  H04B2001/305 ,  H04L27/2649

Abstract: The present disclosure relates to a wireless communication node comprising at least one array antenna (1; 1') configured to receive a radio signal, said array antenna (1; 1') comprising a plurality (M) of receiving antenna devices (2), each of said antenna devices (2) being connected to a respective receiving circuit (3) which is configured for processing said radio signal. Each receiving circuit (3) comprises a demodulator (4; 11), an analog-to-digital converter (5; 12, 13) and a decoder (6; 14), the demodulator (4; 11) being configured to receive an analog signal from the corresponding receiving antenna device (2) and to output a demodulated analog signal to said analog-to-digital converter (5; 12, 13) which outputs a converted digital signal to the decoder (6; 14). Furthermore, the node is configured for adding a direct current, DC, offset value to said demodulated analog signal wherein the combined offset values of said node follow a predetermined distribution of values, having a variance, over the analog-to-digital converters (5; 12, 13). The disclosure also relates to a method for communication over a wireless node, and an antenna arrangement.

Abstract translation: 本公开涉及一种无线通信节点，包括被配置为接收无线电信号的至少一个阵列天线（1; 1'），所述阵列天线（1; 1'）包括多个（M）接收天线装置（2） ，每个所述天线装置（2）连接到被配置用于处理所述无线电信号的各个接收电路（3）。 每个接收电路（3）包括解调器（4; 11），模拟 - 数字转换器（5; 12,13）和解码器（6; 14），所述解调器（4; 11） 来自相应的接收天线装置（2）的模拟信号，并将解调的模拟信号输出到所述模数转换器（5; 12,13），该转换器将转换的数字信号输出到解码器（6; 14）。 此外，节点被配置为将直流DC偏移值添加到所述解调模拟信号，其中所述节点的组合偏移值在模数转换器（5）上遵循具有方差的预定分布值 ; 12,13）。 本公开还涉及一种用于通过无线节点通信的方法和天线装置。

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

IPC: H04B7/04 ,  H04B7/06

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：WO2009054765A1

公开(公告)日：2009-04-30

申请号：PCT/SE2007/050785

申请日：2007-10-26

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) ,  GUSTAVSSON, Ulf

Inventor： GUSTAVSSON, Ulf

IPC: H03F1/02

CPC classification number: H03F1/0294 ,  H03F1/3241 ,  H03F1/3282 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/324 ,  H03F2200/451 ,  H04B1/0483

Abstract: The present invention concerns a composite amplifier and a method for controlling the amplitude of a composite amplifier in a node of a wireless communication system. The composite amplifier comprises a first amplifier and a second amplifier that are arranged to be connected via an output combiner network to a load. The method comprises decomposing an input signal into a first signal component and a second signal component. Further, the method comprises differentiating the amplitude on the first signal component from the amplitude on the second signal component. the differentiation is made such that the aggregated efficiency of the composite amplifier is increased. The present invention also oncerns a radio transmission device comprising a composite amplifier.

Abstract translation: 本发明涉及一种用于控制无线通信系统的节点中的复合放大器的振幅的复合放大器和方法。 复合放大器包括被布置成经由输出组合器网络连接到负载的第一放大器和第二放大器。 该方法包括将输入信号分解为第一信号分量和第二信号分量。 此外，该方法包括将第一信号分量上的振幅与第二信号分量上的幅度进行微分。 进行区分使得复合放大器的聚集效率增加。 本发明还涉及一种包括复合放大器的无线电传输装置。

公开(公告)号：WO2022174886A1

公开(公告)日：2022-08-25

申请号：PCT/EP2021/053718

申请日：2021-02-16

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： GUSTAVSSON, Ulf ,  FARSAEI, Amirashkan ,  ALVARADO, Alex ,  WILLEMS, Frans, M.J. ,  SHEIKH, Alireza

IPC: H04B7/0452 ,  G06N3/02 ,  G06N20/00

Abstract: A method is disclosed of training a neural network to select users for multi user multiple-input multiple-output (MU-MIMO) communication from a set of potential users. The method comprises providing (to the neural network) a plurality of training data sets, each training data set comprising input data corresponding to a channel realization and output data corresponding to an optimal user selection for the channel realization, and controlling the neural network to analyze the plurality of training data sets to determine a branch weight for each association between neurons of neighboring layers of the neural network, wherein the branch weight is for provision of the output data responsive to the input data. A related method of selecting users for MU-MIMO communication from a set of potential users comprises providing (to a neural network trained as specified above) input data corresponding to an applicable channel, receiving (from the neural network) output data comprising a user selection indication, and selecting users based on the user selection indication. Corresponding apparatuses, neural network, network node and computer program product are also disclosed.

公开(公告)号：WO2020104014A1

公开(公告)日：2020-05-28

申请号：PCT/EP2018/081867

申请日：2018-11-20

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： GUSTAVSSON, Ulf ,  MOLLÉN, Christopher ,  LARSSON, Erik

IPC: H04W52/42

Abstract: A transmission power allocation method for a transmitter is disclosed. The transmitter comprises a number of at least two transmitter paths for spatial multiplexing of two or more signals to be transmitted using respective allocated transmission powers to respective ones of two or more users, wherein each transmitter path comprises at least one component causing non-linear distortion and a transmit antenna. The method comprises determining a respective received distortion power for each of the two or more users as a function of respective hypothesized transmission powers for the two or more users and based on a model of a spatial behavior of the non-linear distortion. The method also comprises allocating respective transmission powers for the two or more users based on the determined respective received distortion powers. Corresponding transmission power allocation apparatus, transmitter, network node, wireless communication device, and computer program product are also disclosed.

公开(公告)号：WO2019219185A1

公开(公告)日：2019-11-21

申请号：PCT/EP2018/062721

申请日：2018-05-16

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： GUSTAVSSON, Ulf ,  MOLLÉN, Christopher ,  LARSSON, Erik

IPC: H04B1/10 ,  H04B1/12 ,  H04B7/08

Abstract: A method is disclosed of a wireless receiver configured for spatial selective reception. The method is for mitigation of an interfering signal leaked into a frequency range of a desired signal due to non-linearity of hardware components of the receiver. The method comprises receiving a composite signal comprising the desired signal and the interfering signal, filtering the composite signal using a spatial filter for a channel response of the desired signal to provide a first intermediate signal component, and filtering the composite signal using a spatial filter for a channel response of the interfering signal to provide a second intermediate signal component. The method also comprises estimating a squared amplitude of the interfering signal based on the second intermediate signal component and a model of the non-linearity, and estimating the desired signal based on the first intermediate signal component, the estimated squared amplitude of the interfering signal, and the model of the non-linearity. Corresponding apparatus, wireless receiver, wireless communication device and computer program product are also disclosed.

公开(公告)号：WO2017196246A3

公开(公告)日：2017-11-16

申请号：PCT/SE2017/050487

申请日：2017-05-12

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： BALDEMAIR, Robert ,  ABRAHAMSSON, Richard ,  AKTAS, Ismet ,  ALRIKSSON, Peter ,  ANSARI, Junaid ,  ASHRAF, Shehzad Ali ,  ASPLUND, Henrik ,  ATHLEY, Fredrik ,  AXELSSON, Håkan ,  AXMON, Joakim ,  AXNÄS, Johan ,  BALACHANDRAN, Kumar ,  BARK, Gunnar ,  BERG, Jan-Erik ,  BERGSTRÖM, Andreas ,  BJÖRKEGREN, Håkan ,  BRAHMI, Nadia ,  CAPAR, Cagatay ,  CARLSSON, Anders ,  CEDERGREN, Andreas ,  COLDREY, Mikael ,  DA SILVA, Icaro L. J. ,  DAHLMAN, Erik ,  EL ESSAILI, Ali ,  ENGSTRÖM, Ulrika ,  ERICSON, Mårten ,  ERIKSSON, Erik ,  FALLGREN, Mikael ,  FAN, Rui ,  FODOR, Gabor ,  FRENGER, Pål ,  FRIDÉN, Jonas ,  FRÖBERG OLSSON, Jonas ,  FURUSKÄR, Anders ,  FURUSKOG, Johan ,  GARCIA, Virgile ,  GATTAMI, Ather ,  GUNNARSSON, Fredrik ,  GUSTAVSSON, Ulf ,  HAGERMAN, Bo ,  HARRYSSON, Fredrik ,  HE, Ning ,  HESSLER, Martin ,  HILTUNEN, Kimmo ,  HONG, Songnam ,  HUI, Dennis ,  HUSCHKE, Jörg ,  IRNICH, Tim ,  JACOBSSON, Sven ,  JALDÉN, Niklas ,  JÄRMYR, Simon ,  JIANG, Zhiyuan ,  JOHANSSON, Martin ,  JOHANSSON, Niklas ,  KANG, Du Ho ,  KARIPIDIS, Eleftherios ,  KARLSSON, Patrik ,  KHAYRALLAH, Ali S. ,  KILINC, Caner ,  KLANG, Göran N. ,  KRONANDER, Jonas ,  LANDSTRÖM, Sara ,  LARSSON, Christina ,  LI, Gen ,  LINDBOM, Lars ,  LINDGREN, Robert ,  LINDOFF, Bengt ,  LINDQVIST, Fredrik ,  LIU, Jinhua ,  LOHMAR, Thorsten ,  LU, Qianxi ,  MANHOLM, Lars ,  MARIC, Ivana ,  MEDBO, Jonas ,  MIAO, Qingyu ,  MILDH, Gunnar ,  MOOSAVI, Reza ,  MÜLLER, Walter ,  MYHRE, Elena ,  NORRMAN, Karl ,  OLSSON, Bengt-Erik ,  PALENIUS, Torgny ,  PARKVALL, Stefan ,  PEISA, Janne ,  PETERSSON, Sven ,  PRADAS, Jose Luis ,  PRYTZ, Mikael ,  QUESETH, Olav ,  RAMACHANDRA, Pradeepa ,  RAMOS, Edgar ,  REIAL, Andres ,  RIMHAGEN, Thomas ,  RINGH, Emil ,  RUGELAND, Patrik ,  RUNE, Johan ,  SACHS, Joachim ,  SAHLIN, Henrik ,  SAXENA, Vidit ,  SEIFI, Nima ,  SELÈN, Yngve ,  SEMAAN, Eliane ,  SHARMA, Sachin ,  SHI, Cong ,  SKÖLD, Johan ,  STATTIN, Magnus ,  STJERNMAN, Anders ,  SUNDMAN, Dennis ,  SUNDSTRÖM, Lars ,  TERCERO VARGAS, Miurel Isabel ,  TIDESTAV, Claes ,  TOMBAZ, Sibel ,  TORSNER, Johan ,  TULLBERG, Hugo ,  VIKBERG, Jari ,  VON WRYCZA, Peter ,  WAGER, Stefan ,  WALLDEEN, Thomas ,  WALLENTIN, Pontus ,  WANG, Hai ,  WANG HELMERSSON, Ke ,  WANG, Jianfeng ,  WANG, Yi-Pin Eric ,  WERNER, Karl ,  WIBERG, Niclas ,  WITTENMARK, Emma ,  YILMAZ, Osman Nuri Can ,  ZAIDI, Ali ,  ZHANG, Zhan ,  ZHANG, Zhang ,  ZHENG, Yanli

IPC: H04L5/14 ,  H04L5/00

Abstract: Methods and apparatus in a fifth-generation wireless communications, including an example method, in a wireless device, that includes receiving a downlink signal comprising an uplink access configuration index, using the uplink access configuration index to identify an uplink access configuration from among a predetermined plurality of uplink access configurations, and transmitting to the wireless communications network according to the identified uplink access configuration. The example method further includes, in the same wireless device, receiving, in a first downlink subframe, a first Orthogonal Frequency-Division Multiplexing (OFDM) transmission formatted according to a first numerology and receiving, in a second downlink subframe, a second OFDM transmission formatted according to a second numerology, the second numerology differing from the first numerology, where the first numerology has a first subcarrier spacing and the second numerology has a second subcarrier spacing, the first subcarrier spacing differing from the second subcarrier spacing. Variants of this method, corresponding apparatuses, and corresponding network-side methods and apparatuses are also disclosed.

Abstract translation: 在无线设备中的包括示例方法的第五代无线通信中的方法和设备，其包括接收包括上行链路接入配置索引的下行链路信号，使用所述上行链路接入配置索引来识别 来自预定多个上行接入配置之中的上行接入配置，并且根据所识别的上行接入配置向无线通信网络发送。 该示例方法还包括：在同一无线设备中，在第一下行链路子帧中接收根据第一数字学格式化的第一正交频分复用（OFDM）传输，并在第二下行链路子帧中接收第二OFDM传输 根据第二数字学进行格式化，第二数字学不同于第一数字学，其中第一数字学具有第一子载波间隔并且第二数字学具有第二子载波间隔，第一子载波间隔不同于第二子载波间隔。 还公开了该方法的变体，相应的装置以及相应的网络方法和装置。

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：WO2020126016A1

公开(公告)日：2020-06-25

申请号：PCT/EP2018/086398

申请日：2018-12-20

Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)

Inventor： FARHADI, Hamed ,  GUSTAVSSON, Ulf

IPC: H04B7/06

Abstract: Pre-coding methods are disclosed for a transmitter node and for a receiver node, respectively. The transmitter node and/or the receiver node comprises at least one hardware component causing signal distortion for a forward channel and/or a reverse channel. Transmitter node reference signals are transmitted by the transmitter node and received by the receiver node, wherein the transmitter node reference signals result from use of a transmitter node transmission pre-coding setting and an allocated transmission power. The receiver node estimates a forward channel disturbance component (including the signal distortion for the forward channel), selects a receiver node reception pre-coding setting based on the estimated forward channel disturbance component, and updates a receiver node transmission pre-coding setting by using the selected receiver node reception pre-coding setting as receiver node transmission pre-coding setting. Receiver node reference signals are transmitted by the receiver node and received by the transmitter node, wherein the receiver node reference signals result from use of the updated receiver node transmission pre-coding setting. The transmitter node estimates a reverse channel disturbance component (including the signal distortion for the reverse channel), selects a transmitter node reception pre-coding setting based on the estimated reverse channel disturbance component, and updates the transmitter node transmission pre-coding setting by using the selected transmitter node reception pre-coding setting as transmitter node transmission pre-coding setting. Corresponding pre-coding apparatuses, transmitter/receiver nodes, and computer program product are also disclosed.

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

IPC: H03F1/32 ,  H03F3/189 ,  H03F3/24 ,  H03F3/68 ,  H04B7/0417 ,  H04B7/06 ,  H04B1/04

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.