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    METHOD AND APPARATUS FOR PROVIDING EFFICIENT PRECODING FEEDBACK IN A MIMO WIRELESS COMMUNICATION SYSTEM
    1.
    发明申请
    METHOD AND APPARATUS FOR PROVIDING EFFICIENT PRECODING FEEDBACK IN A MIMO WIRELESS COMMUNICATION SYSTEM 审中-公开
    在MIMO无线通信系统中提供有效的预测反馈的方法和装置

    公开(公告)号：WO2008021396A9

    公开(公告)日：2009-05-14

    申请号：PCT/US2007018064

    申请日：2007-08-15

    Applicant: INTERDIGITAL TECH CORP ,  PAN KYLE JUNG-LIN ,  OLESEN ROBERT L ,  GRIECO DONALD M

    Inventor： PAN KYLE JUNG-LIN ,  OLESEN ROBERT L ,  GRIECO DONALD M

    IPC: H04B7/06 ,  H04L1/06

    CPC classification number: H04B7/0663 ,  H04B7/0417 ,  H04B7/0634 ,  H04B7/0639 ,  H04B7/0641 ,  H04B7/066 ,  H04L1/0687

    Abstract: Precoding feedback scheme based on Jacobi rotations to generate the feedback in the uplink. For a wireless communication system including a transmitter and a receiver. The system may use either a single codeword (SOW) or a double codeword (DCW). The precoding scheme is based on transmit beamforming (TxBF). Differential feedback is considered, with periodic non-differential feedback to avoid error accumulation or propagation due to differential processing. Precoding feedback scheme based on Jacobi rotations to generate the feedback in the uplink. For a wireless communication system including a transmitter and a receiver. The system may use either a single codeword (SOW) or a double codeword (DCW). The precoding scheme is based on transmit beamforming (TxBF). Differential feedback is considered, with periodic non-dif f erential feedback to avoid error accumulation or propagation due to differential processing.

    Abstract translation: 基于Jacobi旋转的预编码反馈方案在上行链路中生成反馈。 对于包括发射机和接收机的无线通信系统。 该系统可以使用单个码字（SOW）或双码字（DCW）。 预编码方案基于发射波束成形（TxBF）。 考虑差分反馈，具有周期性非差分反馈，以避免由于差分处理而导致的误差积累或传播。 基于Jacobi旋转的预编码反馈方案在上行链路中生成反馈。 对于包括发射机和接收机的无线通信系统。 该系统可以使用单个码字（SOW）或双码字（DCW）。 预编码方案基于发射波束成形（TxBF）。 考虑差分反馈，具有周期性的非差异反馈，以避免由差分处理引起的误差积累或传播。

    METHOD, APPARATUS AND SYSTEM FOR IMPLEMENTING MULTI-USER VIRTUAL MULTIPLE-INPUT MULTIPLE-OUTPUT
    2.
    发明申请
    METHOD, APPARATUS AND SYSTEM FOR IMPLEMENTING MULTI-USER VIRTUAL MULTIPLE-INPUT MULTIPLE-OUTPUT 审中-公开
    用于实现多用户虚拟多路输入多输出的方法，装置和系统

    公开(公告)号：WO2008021008A3

    公开(公告)日：2008-04-10

    申请号：PCT/US2007017227

    申请日：2007-08-02

    Applicant: INTERDIGITAL TECH CORP ,  GRIECO DONALD M ,  PAN KYLE JUNG-LIN

    Inventor： GRIECO DONALD M ,  PAN KYLE JUNG-LIN

    IPC: H04B7/04

    CPC classification number: H04B7/0452 ,  H04B7/0617 ,  H04B7/0669 ,  H04B7/0671

    Abstract: A method and system for implementing multi-user virtual multiple-input multiple-output (MIMO) techniques for wireless transmit/receive units (WTRUs) having one or more antennas are disclosed. The system includes a base station and at least one WTRU having at least two antennas. The number of antennas of the base station is not less than the number of antennas of any of the WTRUs. The base station generates a channel matrix for the WTRUs and processes received signals from the WTRUs based on a measurement of the channel matrix. The WTRUs may perform transmit precoding or eigen-beamforming using the channel matrix information. The WTRUs may also perform transmit diversity.

    Abstract translation: 公开了一种用于实现具有一个或多个天线的无线发射/接收单元（WTRU）的多用户虚拟多输入多输出（MIMO）技术的方法和系统。 该系统包括基站和至少一个具有至少两个天线的WTRU。 基站的天线数量不小于任何WTRU的天线数量。 基站为WTRU生成信道矩阵，并基于信道矩阵的测量来处理来自WTRU的接收信号。 WTRU可以使用信道矩阵信息来执行发送预编码或特征波束成形。 WTRU还可以执行发射分集。

    ENHANCED AUTOMATIC GAIN CONTROL MECHANISM FOR TIMESLOTTED DATA TRANSMISSIONS
    4.
    发明申请
    ENHANCED AUTOMATIC GAIN CONTROL MECHANISM FOR TIMESLOTTED DATA TRANSMISSIONS 审中-公开
    增强数据传输的自动增益控制机制

    公开(公告)号：WO2004084460A3

    公开(公告)日：2004-12-16

    申请号：PCT/US2004007496

    申请日：2004-03-12

    Applicant: INTERDIGITAL TECH CORP ,  HAIM JOHN W ,  TYRA FRYDERYK ,  GUCCIONE LOUIS J ,  AXNESS TIMOTHY A ,  GRIECO DONALD M

    Inventor： HAIM JOHN W ,  TYRA FRYDERYK ,  GUCCIONE LOUIS J ,  AXNESS TIMOTHY A ,  GRIECO DONALD M

    IPC: H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H04B7/005 ,  H04J3/00

    CPC classification number: H04W52/52 ,  H03G3/001 ,  H03G3/3052 ,  H03G3/3078

    Abstract: An automatic gain control (AGC) method according to the present invention applies an initial gain by a digital AGC circuit (13) in a timeslot is determined using a final calculated gain from the same timeslot in the previous frame together with an offset factor. An erase function (14) is activated for a given data sample block when the number of saturated data samples that are detected within the block (17) exceeds a threshold value. The power measurement made by the AGC circuit and used to update the gain is adjusted based on the number of measured data samples that are saturated. These elements provide a gain limiting function and allows limiting of the dynamic range for further signal processing.

    Abstract translation: 根据本发明的自动增益控制（AGC）方法，利用来自前一帧的相同时隙的最终计算的增益以及偏移因子来确定时隙中的数字AGC电路（13）的初始增益。 当在块（17）内检测到的饱和数据样本的数量超过阈值时，针对给定数据采样块激活擦除功能（14）。 由AGC电路进行的用于更新增益的功率测量基于饱和的测量数据样本的数量进行调整。 这些元件提供增益限制功能，并允许限制用于进一步信号处理的动态范围。

    MIMO WIRELESS COMMUNICATION METHOD AND APPARATUS FOR TRANSMITTING AND DECODING RESOURCE BLOCK STRUCTURES BASED ON A DEDICATED REFERENCE SIGNAL MODE
    8.
    发明申请
    MIMO WIRELESS COMMUNICATION METHOD AND APPARATUS FOR TRANSMITTING AND DECODING RESOURCE BLOCK STRUCTURES BASED ON A DEDICATED REFERENCE SIGNAL MODE 审中-公开
    基于专用参考信号模式的MIMO无线通信方法和装置发送和解码资源块结构

    公开(公告)号：WO2008115588A3

    公开(公告)日：2008-11-13

    申请号：PCT/US2008003777

    申请日：2008-03-20

    Applicant: INTERDIGITAL TECH CORP ,  PAN KYLE JUNG-LIN ,  GRIECO DONALD M

    Inventor： PAN KYLE JUNG-LIN ,  GRIECO DONALD M

    IPC: H04L27/26 ,  H04L25/02

    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。

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