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    PREFILTERING IN MIMO RECEIVER
    3.
    发明公开
    PREFILTERING IN MIMO RECEIVER 有权
    预过滤在MIMO接收机

    公开(公告)号：EP2745427A4

    公开(公告)日：2015-11-25

    申请号：EP12879310

    申请日：2012-06-18

    Applicant: ERICSSON TELEFON AB L M

    Inventor： SAHLIN HENRIK ,  LOPEZ MIGUEL

    IPC: H04B7/04 ,  H04B7/08 ,  H04L25/02 ,  H04L25/03

    CPC classification number: H04B1/40 ,  H04B7/0413 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/0242 ,  H04L25/0246 ,  H04L25/03 ,  H04L25/03891 ,  H04L2025/03426

    Abstract: Data signals transmitted by a plurality of transmitting antennas over a radio channel are demodulated. The method comprises receiving (202) on a plurality of receiving antennas, a data signal and a reference signal, the contents of the reference signal being known a priori to the receiver. The contents of the reference signal are used for calculating (204) an estimated polynomial channel matrix. A polynomial pre-filter matrix is calculated (206, 208) by a decomposition of the estimated polynomial channel matrix into a product of a paraunitary polynomial matrix and an upper triangular polynomial matrix with minimum phase filters on its main diagonal, where the polynomial pre-filter matrix is obtained by calculating the paraconjugate of the paraunitary polynomial matrix. The received data signal is demodulated (212) where the received data signal is multiplied with the calculated polynomial pre-filter matrix.

    METHODS AND DEVICES FOR TRANSMISSION OF SIGNALS IN A TELECOMMUNICATION SYSTEM
    4.
    发明公开
    METHODS AND DEVICES FOR TRANSMISSION OF SIGNALS IN A TELECOMMUNICATION SYSTEM 审中-公开
    用于在电信系统中发送信号的方法和设备

    公开(公告)号：EP2834928A4

    公开(公告)日：2015-08-26

    申请号：EP13773082

    申请日：2013-02-18

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LOPEZ MIGUEL ,  HUI DENNIS

    IPC: H04L23/02 ,  H04J3/02 ,  H04L25/02 ,  H04L27/26

    CPC classification number: H04J3/02 ,  H04L23/02 ,  H04L25/0226 ,  H04L27/2613 ,  H04L27/2643

    Abstract: Methods and devices for generating training symbols to be transmitted in a radio network are provided for a radio system where multiple users are sharing the same transmission slot. The method involves forming a sequence of training symbols by repeating an initial block of training symbols and for each user rotating the repeated block by a user specific rotation angle. A rotated block is periodically extended in both ends.

    Abstract translation: 提供用于产生要在无线电网络中发送的训练符号的方法和设备用于其中多个用户共享相同传输时隙的无线电系统。 该方法包括通过重复训练符号的初始块并且每个用户通过用户特定的旋转角度来旋转重复的块来形成训练符号序列。 旋转的块在两端周期性地延伸。

    MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT RADIO COMMUNICATIONS
    5.
    发明公开
    MULTI-USER MULTIPLE INPUT MULTIPLE OUTPUT RADIO COMMUNICATIONS 审中-公开
    与几个用户的无线MIMO通信

    公开(公告)号：EP2883311A4

    公开(公告)日：2015-07-22

    申请号：EP13829356

    申请日：2013-06-18

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LOPEZ MIGUEL ,  SUNDBERG MÅRTEN ,  LIBERG OLOF

    IPC: H04B7/04 ,  H04L27/18 ,  H04L27/34

    CPC classification number: H04B7/0452 ,  H04L27/18 ,  H04L27/3461 ,  H04W72/048

    Abstract: A radio communications system conducts radio communications using basic physical channels. Each basic physical channel defines a time slot and a radio frequency for transmission. Radio communication is established between a radio base station and multiple UEs over the same basic physical channel. Three or four subchannels are provided in the same basic physical channel to simultaneously support three or four full rate UE communications, seven or eight half rate UE communications, or other equivalent combinations. A first baseband transmitter chain can map full rate data corresponding to first and second full rate UE communications (or equivalent) as adaptive quadrature phase shift keying, AQPSK, signals onto a first and a second of the three subchannels. A second baseband transmitter chain can map full rate data corresponding to a third and/or fourth full rate UE communication (or equivalent) as phase shifted signals onto a third of the three subchannels.

    Abstract translation: 无线电通信系统使用基本物理信道进行无线电通信。 每个基本物理信道定义了时隙和用于传输的射频。 通过相同的基本物理信道在无线基站和多个UE之间建立无线电通信。 三个或四个子信道被提供在相同的基本物理信道中以同时支持三个或四个全速率UE通信，七个或八个半速率UE通信或其他等效组合。 第一基带发射机链可以将对应于第一和第二全速率UE通信（或等效）的全速率数据映射为自适应正交相移键控AQPSK，信号到三个子信道中的第一和第二子信道上。 第二基带发射机链可以将对应于第三和/或第四全速率UE通信（或等效物）的全速率数据映射为相移信号到三个子信道中的三分之一。

    GENERATING AND RECEIVING A TRAINING SEQUENCE
    8.
    发明申请
    GENERATING AND RECEIVING A TRAINING SEQUENCE 审中-公开
    生成和接收培训序列

    公开(公告)号：WO2013158014A3

    公开(公告)日：2013-12-19

    申请号：PCT/SE2013050311

    申请日：2013-03-21

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LOPEZ MIGUEL

    IPC: H04J3/00

    CPC classification number: H04J3/1694 ,  H04L25/0238 ,  H04L27/2607 ,  H04L27/2613 ,  H04W72/0446

    Abstract: Methods and devices for generating and receiving a training sequence in a radio communication network for a user sharing the same transmission slot with other users is provided where multiple users are multiplexed in the same time slot. A first, original, bit sequence, is repeated and a cyclic prefix and a cyclic postfix is added to the repeated bit sequence thereby forming the training sequence for the user.

    Abstract translation: 提供了用于在与其他用户共享相同传输时隙的用户的无线电通信网络中产生和接收训练序列的方法和设备，其中多个用户在相同时隙中复用。 重复第一个原始比特序列，并将循环前缀和循环后缀添加到重复比特序列，从而形成用户的训练序列。

    DETERMINING A POSITION OF A WIRELESS DEVICE
    9.
    发明申请
    DETERMINING A POSITION OF A WIRELESS DEVICE 审中-公开
    确定无线设备的位置

    公开(公告)号：WO2016039675A3

    公开(公告)日：2016-05-06

    申请号：PCT/SE2014051043

    申请日：2014-09-10

    Applicant: ERICSSON TELEFON AB L M

    Inventor： LOPEZ MIGUEL ,  LENNARTSON BENNY ,  SUNDBERG KRISTER

    IPC: H04W64/00 ,  G01S5/10 ,  H04L5/00

    CPC classification number: H04W4/02 ,  G01S5/0252 ,  H04B17/327 ,  H04B17/336 ,  H04W24/08 ,  H04W64/00 ,  H04W72/042 ,  H04W88/085

    Abstract: It is presented a method for determining a position of a wireless device within a single radio cell served by a plurality of remote radio heads. The method is performed in a position determination node and comprises the steps of: receiving a measured power signature comprising at least two, in time separated, power measurement values of a downlink signal, the measured power signature originating from the wireless device; comparing the measured power signature with a set of reference power signatures, wherein each one of the plurality of remote radio heads is associated with a reference power signature and the reference power signatures differ for at least two of the plurality of remote radio heads; and determining a position in that the wireless device is in the vicinity of one of the at least one remote radio head whose reference power signature best matches the measured power signature.

    Abstract translation: 提出了一种用于确定由多个远程无线电头服务的单个无线电小区内的无线设备的位置的方法。 该方法在位置确定节点中执行并且包括以下步骤：接收测量的功率签名，该测量的功率签名包括下行链路信号的以时间分隔的至少两个功率测量值，所测量的功率签名源自无线设备; 将所测量的功率标记与一组参考功率标记进行比较，其中所述多个远程无线电头端中的每一个与参考功率标记相关联，并且所述参考功率标记针对所述多个远程无线电头端中的至少两个不同; 以及确定位置，因为无线设备处于其参考功率特征最佳匹配测量的功率特征的至少一个远程射频头中的一个附近。

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