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    Adaptive time diversity and spatial diversity for OFDM
    14.
    发明授权
    Adaptive time diversity and spatial diversity for OFDM 有权
    OFDM的自适应时间分集和空间分集

    公开(公告)号：US08837272B2

    公开(公告)日：2014-09-16

    申请号：US13678702

    申请日：2012-11-16

    Applicant: Apple Inc.

    Inventor： Shiquan Wu ,  Wen Tong ,  Leo Strawczynski

    IPC: H04J11/00

    CPC classification number: H04L27/2646 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L27/2626 ,  H04L27/2628

    Abstract: An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.

    Abstract translation: 一种适应性正交频分复用系统（OFDM），其使用多输入多输出（MIMO）来具有根据时间分集发送的OFDM信号以减少信号衰落或者根据空间分集来增加数据速率。 基于阈值与三个标准中的至少一个的比较的结果，将子载波分类为空间分集发送或时间分集发送。 标准包括计算频道响应矩阵的最小本征值和矩阵的对角线的最小元素以及矩阵的最大和最小本征值的比率。

    Adaptive Time Diversity and Spatial Diversity for OFDM
    15.
    发明申请
    Adaptive Time Diversity and Spatial Diversity for OFDM 有权
    OFDM的自适应时间分集和空间分集

    公开(公告)号：US20130142031A1

    公开(公告)日：2013-06-06

    申请号：US13678702

    申请日：2012-11-16

    Applicant: Apple Inc.

    Inventor： Shiquan Wu ,  Wen Tong ,  Leo Strawczynski

    IPC: H04B7/04

    CPC classification number: H04L27/2646 ,  H04B7/0413 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L27/2626 ,  H04L27/2628

    Abstract: An adaptable orthogonal frequency-division multiplexing system (OFDM) that uses a multiple input multiple output (MIMO) to having OFDM signals transmitted either in accordance with time diversity to reducing signal fading or in accordance with spatial diversity to increase the data rate. Sub-carriers are classified for spatial diversity transmission or for time diversity transmission based on the result of a comparison between threshold values and at least one of three criteria. The criteria includes a calculation of a smallest eigen value of a frequency channel response matrix and a smallest element of a diagonal of the matrix and a ratio of the largest and smallest eigen values of the matrix.

    Abstract translation: 一种适应性正交频分复用系统（OFDM），其使用多输入多输出（MIMO）来具有根据时间分集发送的OFDM信号以减少信号衰落或者根据空间分集来增加数据速率。 基于阈值与三个标准中的至少一个的比较的结果，将子载波分类为空间分集发送或时间分集发送。 标准包括计算频道响应矩阵的最小本征值和矩阵的对角线的最小元素以及矩阵的最大和最小本征值的比率。

    Method and System for a Wireless Multi-Hop Relay Network
    16.
    发明申请
    Method and System for a Wireless Multi-Hop Relay Network 有权
    无线多跳中继网络的方法和系统

    公开(公告)号：US20150237564A1

    公开(公告)日：2015-08-20

    申请号：US14703185

    申请日：2015-05-04

    Applicant: Apple Inc.

    Inventor： Guo Qiang Wang ,  Wen Tong ,  Shiquan Wu

    IPC: H04W40/22 ,  H04B7/155

    CPC classification number: H04B7/15592 ,  H04B7/155 ,  H04B7/2606 ,  H04L45/54 ,  H04L45/586 ,  H04L45/745 ,  H04L47/32 ,  H04W40/12 ,  H04W40/22 ,  H04W40/24 ,  H04W76/12

    Abstract: In a wireless multi-hop relay network arranged in a tree topology, the base station and one or more relay stations are associated as a virtual base station (VBS). The base station and each relay station have a unique virtual base station identifier (VBS-ID) associated with the path defined by the base station and the one or more relay stations. A relay station in the branch uses its VBS-ID for communicating with an attached subscriber station (e.g. a mobile station) such that communications between the base station and subscriber station occur via the VBS. Subscriber station data communications are relayed between the base station and the one or more relay stations over the VBS via a tunnel connection. The VBS is autoconfigurable. Mobility for subscriber stations and relay stations is provided through reconfiguration of VBS's.

    Abstract translation: 在以树形拓扑布置的无线多跳中继网络中，基站和一个或多个中继站作为虚拟基站（VBS）相关联。 基站和每个中继站具有与由基站和一个或多个中继站定义的路径相关联的唯一的虚拟基站标识符（VBS-ID）。 分支中的中继站使用其VBS-ID与附加的用户站（例如移动站）进行通信，使得基站和用户站之间的通信经由VBS发生。 订户站数据通信通过隧道连接在VBS之间在基站和一个或多个中继站之间中继。 VBS是可自动配置的。 通过VBS的重新配置提供用户站和中继站的移动性。

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