利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

11 条记录 (耗时 0.021 秒)

    RATE CONTROL FOR A VIRTUAL DIVERSITY RECEIVER
    1.
    发明公开
    RATE CONTROL FOR A VIRTUAL DIVERSITY RECEIVER 审中-公开
    速率控制虚拟分集接收机

    公开(公告)号：EP2904728A1

    公开(公告)日：2015-08-12

    申请号：EP13815138.6

    申请日：2013-09-25

    申请人： Telefonaktiebolaget L M Ericsson (PUBL)

    发明人： KHAYRALLAH, Ali, S. ,  WANG, Yi-Pin, Eric

    IPC分类号： H04L1/00 ,  H04L25/02 ,  H04B7/06

    CPC分类号： H04B17/00 ,  H04B7/0697 ,  H04B17/336 ,  H04B17/345 ,  H04L1/0002 ,  H04L1/0009 ,  H04L25/0204 ,  H04L25/0224

    摘要： Devices and methods for determining transmission rates based on a virtual diversity receiver (VDR) scheme are disclosed. Performance is improved through determination of appropriate transmission rates, which are determined based on one or more signal to interference plus noise ratios (SINRs). The SINRs are calculated using virtual noise and channel coefficient values obtained as part of the VDR scheme. Utilizing an underlying pilot structure a user device may receive several sets of symbols. These symbols are then used to obtain both real and virtual channel noise power values and channel coefficients. These values and coefficients are then used to determine first and second SINR values indicative of one or more channels in the communication network. These SINR values may correlate to transmission rates (modulation order and/or coding rate). The SINRs may be sent to a base station, or the user device itself may determine one or more transmission rates.

    SIGNAL COMPRESSION FOR BACKHAUL COMMUNICATIONS USING LINEAR TRANSFORMATIONS
    2.
    发明公开
    SIGNAL COMPRESSION FOR BACKHAUL COMMUNICATIONS USING LINEAR TRANSFORMATIONS 有权
    信号压缩与线性变换回程通信

    公开(公告)号：EP2689539A1

    公开(公告)日：2014-01-29

    申请号：EP12711259.7

    申请日：2012-03-14

    申请人： Telefonaktiebolaget L M Ericsson (PUBL)

    发明人： HUI, Dennis ,  CHENG, Jung-Fu ,  GUEY, Jiann-Ching ,  KHAYRALLAH, Ali, S. ,  WONG, Shing-Wa

    IPC分类号： H04B7/02 ,  H03M7/30

    CPC分类号： H04B7/024 ,  H03M7/3068 ,  H03M7/3082

    摘要： A compression/decompression method for backhaul communication of a complex-valued radio signal between base stations and the network processing unit, such as a Central Processor of a Coordinated MultiPoint (CoMP) system, significantly reduces backhaul bandwidth. The spatial and temporal correlations of the wireless IQ signal are exploited in order to remove redundancy and substantially reduce signal bandwidth. Feature component signals of significance are extracted through linear transformation to form the radio signal, and are individually quantized, possibly at different bit rates in accordance with their relative importance. The transformation can either be pre-determined or computed in real-time based on the spatial and temporal statistics of the radio signal. In the latter case, the transformation matrix or matrices are also sent over the backhaul in order to allow the radio signal to be reconstructed at the receiving end. Different methods of generating the transformation matrices are proposed.

    FEEDFORWARD RECEIVER AND METHOD FOR REDUCING INTER-SYMBOL INTERFERENCE BY USING COUPLING BETWEEN BITS OR SYMBOLS
    3.
    发明公开
    FEEDFORWARD RECEIVER AND METHOD FOR REDUCING INTER-SYMBOL INTERFERENCE BY USING COUPLING BETWEEN BITS OR SYMBOLS 有权
    前锋和大接收器和一种用于减少符号之间的干扰通过光电耦合之间的比特或符号

    公开(公告)号：EP2380321A1

    公开(公告)日：2011-10-26

    申请号：EP09802005.0

    申请日：2009-12-21

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： KHAYRALLAH, Ali, S.

    IPC分类号： H04L25/03

    CPC分类号： H04L25/03286 ,  H04L1/0048 ,  H04L1/005 ,  H04L25/03318

    摘要： A feedforward receiver and method are described herein that address inter-symbol interference in received symbols by using an enhanced equalizer to generate joint soft values (joint information of a previous modem bit x' and a modem bit x) and an enhanced decoder which uses the joint soft values and side information (bias about the previous modem bit x') to output a more reliable information bit x.

    摘要翻译： 前馈接收器和方法中，通过使用增强的均衡器，以产生共同软值（先前的调制解调器比特x“和一个调制解调器比特x的关节信息）中所述那样的地址的符号间干扰在接收到的符号和增强的解码器，其使用 关节软值和边信息（关于先前调制解调器位x“偏压），以输出一个更可靠的信息位x。

    METHOD AND APPARATUS FOR FINGER PLACEMENT IN A RAKE RECEIVER
    4.
    发明授权
    METHOD AND APPARATUS FOR FINGER PLACEMENT IN A RAKE RECEIVER 有权
    方法和设备的手指放置在RAKE接收机

    公开(公告)号：EP1719258B1

    公开(公告)日：2009-11-11

    申请号：EP04782901.5

    申请日：2004-09-02

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： KHAYRALLAH, Ali, S. ,  COZZO, Carmela ,  BOTTOMLEY, Gregory, E.

    IPC分类号： H04B1/707

    CPC分类号： H04B1/7113 ,  H04B1/7117

    摘要： A receiver based on a RAKE receiver architecture includes a logic circuit configured to assign one or more RAKE fingers to a finger placement grid that is independent from a searcher delay grid used by the receiver's searcher in generating multipath delay profiles for received signals. The logic circuit may use the multipath delay profile to "tune" the finger placement grid relative to the searcher delay grid but the delay resolution of the finger placement grid is independent of the searcher delay grid. This independence permits, for example, setting the finger placement grid to a delay resolution based on a Nyquist criterion independently from the delay resolution used by the searcher. The receiver may use two or more finger placement grids, may operate in a mixed mode where fingers are assigned on- and off-grid, and may operate selectively in grid or non-grid modes.

    METHOD AND APPARATUS FOR FINGER PLACEMENT IN A RAKE RECEIVER
    5.
    发明公开
    METHOD AND APPARATUS FOR FINGER PLACEMENT IN A RAKE RECEIVER 有权
    方法和设备的手指放置在RAKE接收机

    公开(公告)号：EP1719258A1

    公开(公告)日：2006-11-08

    申请号：EP04782901.5

    申请日：2004-09-02

    申请人： Telefonaktiebolaget L M Ericsson (Publ)

    发明人： KHAYRALLAH, Ali, S. ,  COZZO, Carmela ,  BOTTOMLEY, Gregory, E.

    IPC分类号： H04B1/707

    CPC分类号： H04B1/7113 ,  H04B1/7117

    摘要： A receiver based on a RAKE receiver architecture includes a logic circuit configured to assign one or more RAKE fingers to a finger placement grid that is independent from a searcher delay grid used by the receiver's searcher in generating multipath delay profiles for received signals. The logic circuit may use the multipath delay profile to "tune" the finger placement grid relative to the searcher delay grid but the delay resolution of the finger placement grid is independent of the searcher delay grid. This independence permits, for example, setting the finger placement grid to a delay resolution based on a Nyquist criterion independently from the delay resolution used by the searcher. The receiver may use two or more finger placement grids, may operate in a mixed mode where fingers are assigned on- and off-grid, and may operate selectively in grid or non-grid modes.

    EXTENSION CARRIER FOR ARQ
    6.
    发明公开
    EXTENSION CARRIER FOR ARQ 审中-公开
    扩展机架ARQ

    公开(公告)号：EP2904729A1

    公开(公告)日：2015-08-12

    申请号：EP13815137.8

    申请日：2013-09-25

    申请人： Telefonaktiebolaget L M Ericsson (publ)

    发明人： KHAYRALLAH, Ali, S. ,  CHENG, Jung-Fu

    IPC分类号： H04L1/18

    CPC分类号： H04L5/14 ,  H04L1/1887 ,  H04L1/1896

    摘要： In a wireless communication network (10), HARQ acknowledgements, re- transmissions, and related signaling (e.g., channel quality reports) are performed on a Re-transmission Extension Carrier, REC, separate from the primary downlink traffic carrier(s). In various embodiments, the REC may comprise an aggregated wireless communication network channel, which may be cross-channel scheduled or may have its own scheduler. The REC may be Frequency Domain Duplex, FDD, or Time Domain Duplex, TDD, The REC may be dedicated to a main downlink carrier, or may be shared across a plurality of aggregated component carriers. The REC may be transmitted from the same base station (14) as one or more associated main carriers, or from a different base station (14). A shared REC may be operated in cooperative or contention modes. The REC may be implemented in unlicensed spectrum.