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    INTERFERENCE CANCELLATION IN A SPREAD SPECTRUM COMMUNICATION SYSTEM
    4.
    发明申请
    INTERFERENCE CANCELLATION IN A SPREAD SPECTRUM COMMUNICATION SYSTEM 审中-公开
    传播频谱通信系统中的干扰消除

    公开(公告)号：US20150244417A1

    公开(公告)日：2015-08-27

    申请号：US14710162

    申请日：2015-05-12

    Applicant: InterDigital Technology Corporation

    Inventor： David K. Mesecher ,  Alexander Reznik ,  Donald M. Grieco ,  Gary Cheung

    IPC: H04B1/7103 ,  H04B7/06

    CPC classification number: H04B1/7103 ,  H04B1/7097 ,  H04B1/712 ,  H04B7/0613 ,  H04B7/0615 ,  H04B7/0619 ,  H04B7/0634 ,  H04B7/0678 ,  H04B7/0845 ,  H04B7/0854 ,  H04B7/0857 ,  H04B7/0891 ,  H04B2201/70701 ,  H04J13/0003

    Abstract: A method and apparatus used to transmit and receive weighted data transmissions over a plurality of antennas using a plurality of different pilot signals. Different pilot signals are produced and a different pilot signal of the plurality of pilot signals is transmitted on each of a plurality of antennas. Each of the pilot signals is derived from a pseudo noise (PN) sequence and a bit sequence of the PN sequence for each of the pilot signals is different. A plurality of data streams are produced in which each of the data streams has data bits combined with bits of a PN sequence. The data streams are weighted in response to weight information received from a receiving device and the plurality of weighted data streams are transmitted using the plurality of antennas.

    Abstract translation: 一种用于使用多个不同导频信号在多个天线上发送和接收加权数据传输的方法和装置。 产生不同的导频信号，并且在多个天线中的每一个上发送多个导频信号的不同导频信号。 每个导频信号是从伪噪声（PN）序列导出的，并且每个导频信号的PN序列的比特序列是不同的。 产生多个数据流，其中每个数据流具有与PN序列的位组合的数据位。 响应于从接收设备接收的权重信息对数据流进行加权，并且使用多个天线发送多个加权的数据流。

    Hybrid dedicated reference signal method and system
    5.
    发明授权
    Hybrid dedicated reference signal method and system 有权
    混合专用参考信号的方法和系统

    公开(公告)号：US08913675B2

    公开(公告)日：2014-12-16

    申请号：US13780394

    申请日：2013-02-28

    Applicant: InterDigital Technology Corporation

    Inventor： Kyle Jung-Lin Pan ,  Donald M. Grieco

    IPC: H04K1/10 ,  H04L5/00 ,  H04B7/06 ,  H04B7/04 ,  H04L25/02 ,  H04L25/03

    CPC classification number: H04L25/0224 ,  H04B7/0413 ,  H04B7/0426 ,  H04B7/0456 ,  H04B7/0617 ,  H04L5/0023 ,  H04L5/005 ,  H04L5/0051 ,  H04L5/0096 ,  H04L25/0228 ,  H04L25/03343 ,  H04L27/2647 ,  H04W28/04

    Abstract: The transmission and decoding of resource blocks (RBs) transmitted via a multiple-input multiple-output (MIMO) antenna having a plurality of transmit antennas is disclosed. Each RB includes a plurality of resource elements (REs). Each RE is reserved for one of a common reference signal (CRS) associated with one of the transmit antennas, a dedicated reference signal (DRS) including a single beamformed or precoded pilot, a DRS including a composite beamformed or precoded pilot, and a data symbol. Each RB may include a “control type” data symbol that indicates a DRS mode associated with the RB. In one DRS mode, each DRS includes a single beamformed or precoded pilot. In another DRS mode, each DRS includes a composite beamformed or precoded pilot. In yet another DRS mode, single beamformed or precoded pilots, and composite beamformed or precoded pilots, may coexist and be transmitted simultaneously within the same RBs or in different RBs.

    Abstract translation: 公开了通过具有多个发射天线的多输入多输出（MIMO）天线发送的资源块（RB）的传输和解码。 每个RB包括多个资源元素（RE）。 每个RE被保留用于与发射天线中的一个相关联的公共参考信号（CRS）之一，包括单个波束形成或预编码导频的专用参考信号（DRS），包括复合波束形成或预编码导频的DRS和数据 符号。 每个RB可以包括指示与RB相关联的DRS模式的“控制类型”数据符号。 在一个DRS模式中，每个DRS包括单个波束形成或预编码的导频。 在另一种DRS模式中，每个DRS包括复合波束形成或预编码导频。 在另一个DRS模式中，单个波束形成或预编码导频以及复合波束形成或预编码导频可以在相同的RB或不同的RB内共存并同时传输。

    EFFICIENT FRAME TRACKING IN MOBILE RECEIVERS
    7.
    发明申请
    EFFICIENT FRAME TRACKING IN MOBILE RECEIVERS 审中-公开
    移动接收机中的高效帧跟踪

    公开(公告)号：US20140254635A1

    公开(公告)日：2014-09-11

    申请号：US14282259

    申请日：2014-05-20

    Applicant: INTERDIGITAL TECHNOLOGY CORPORATION

    Inventor： Aykut Bultan ,  John W. Haim ,  Donald M. Grieco

    IPC: H04B1/7117 ,  H04B1/7095

    CPC classification number: H04B1/7117 ,  H04B1/7073 ,  H04B1/70754 ,  H04B1/708 ,  H04B1/7095 ,  H04B2201/70701

    Abstract: A method for determining the validity of a most significant path in a wireless communication system wherein data is transmitted in frame units in a multipath environment begins by accumulating a correlated data sequence N times, each time at a frame offset apart from the previous time. A preliminary noise estimate (PNE) is calculated as an average of the accumulated data values. A preliminary noise threshold (PNT) is calculated according to the equation C1×PNE. A final noise estimate (FNE) is calculated as the average of accumulated data values below the PNT. A final noise threshold (FNT) is calculated according to the equation C2×FNE. The validity of the most significant path is determined if the most significant path value is greater than the FNT.

    Abstract translation: 用于确定无线通信系统中最重要路径的有效性的方法，其中以多路径环境中的帧为单位传输数据的开始是通过累积相关数据序列N次，每次与之前的时间相隔一帧偏移。 初步噪声估计（PNE）被计算为累积数据值的平均值。 根据等式C1×PNE计算初步噪声阈值（PNT）。 最终噪声估计（FNE）被计算为低于PNT的累积数据值的平均值。 根据等式C2×FNE计算最终噪声阈值（FNT）。 如果最显着的路径值大于FNT，则确定最重要路径的有效性。

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