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51 条记录 (耗时 0.035 秒)

    Methods and apparatus for determining timing in a wireless communication system
    41.
    发明授权
    Methods and apparatus for determining timing in a wireless communication system 失效

    公开(公告)号：US08422614B2

    公开(公告)日：2013-04-16

    申请号：US12579131

    申请日：2009-10-14

    申请人： Michael M. Wang ,  Bojan Vrcelj ,  Fuyun Ling

    发明人： Michael M. Wang ,  Bojan Vrcelj ,  Fuyun Ling

    IPC分类号： H04L7/00

    CPC分类号： H04L27/2662 ,  H04L27/2676

    摘要： Methods and apparatus for setting timing of sampling of one or more symbols. The disclosed methods account for at least three types of effective interference (EI) and are used to set the timing of a sampling window for sampling received symbols. The methods includes setting timing based on determining an energy density function accounting for both static and dynamic EI, determining the minimum of a total energy profile and sliding the sampling window to ensure that the minimum point is at a predetermined point, and determining and using a composite energy profile accounting for short term and long term fading effects. The disclosed apparatus include a transceiver employing one or more of the disclosed methods for setting timing when receiving the symbols.

    Fine timing acquisition
    44.
    发明申请
    Fine timing acquisition 审中-公开
    精细定时采集

    公开(公告)号：US20060221810A1

    公开(公告)日：2006-10-05

    申请号：US11372394

    申请日：2006-03-08

    申请人： Bojan Vrcelj ,  Fuyun Ling ,  Raghuraman Krishnamoorthi ,  Vinay Murthy

    发明人： Bojan Vrcelj ,  Fuyun Ling ,  Raghuraman Krishnamoorthi ,  Vinay Murthy

    IPC分类号： H04J11/00 ,  H04J3/06

    CPC分类号： H04L27/2656 ,  H04L27/2663 ,  H04L27/2665 ,  H04L27/2675 ,  H04L27/2695

    摘要： A method for synchronizing timing of a receiver to a received orthogonal frequency division multiplexing (OFDM) signal is disclosed. A first timing acquisition is performed with a first received time division multiplexed (TDM) pilot to determine a course timing estimate of the received OFDM signal. A second timing acquisition is performed with a second TDM pilot to determine a fine timing estimate for a OFDM symbol of the received OFDM signal. In the second timing acquisition, the accumulated energy of channel taps over a detection window is determined and a trailing edge of the accumulated energy curve is detected. A Fourier transform (FT) collection window location for subsequent OFDM symbols is adjusted according to the trailing edge information.

    摘要翻译： 公开了一种用于使接收机的定时与接收的正交频分复用（OFDM）信号同步的方法。 利用第一接收时分复用（TDM）导频执行第一定时获取，以确定所接收的OFDM信号的路线定时估计。 用第二TDM导频执行第二定时获取，以确定接收到的OFDM信号的OFDM符号的精确定时估计。 在第二定时获取中，确定在检测窗口上的通道抽头的累积能量，并且检测累积能量曲线的后沿。 根据后沿信息调整后续OFDM符号的傅立叶变换（FT）收集窗口位置。

    Methods and apparatus for determining timing in a wireless communication system
    46.
    发明申请
    Methods and apparatus for determining timing in a wireless communication system 失效
    用于确定无线通信系统中的定时的方法和装置

    公开(公告)号：US20070098125A1

    公开(公告)日：2007-05-03

    申请号：US11264532

    申请日：2005-10-31

    申请人： Bojan Vrcelj ,  Fuyun Ling ,  Michael Wang

    发明人： Bojan Vrcelj ,  Fuyun Ling ,  Michael Wang

    IPC分类号： H04L7/00

    CPC分类号： H04L27/2662 ,  H04L27/2676

    摘要： Methods and apparatus for setting timing of sampling of one or more symbols. The disclosed methods account for at least three types of effective interference (EI) and are used to set the timing of a sampling window for sampling received symbols. The methods includes setting timing based on determining an energy density function accounting for both static and dynamic EI, determining the minimum of a total energy profile and sliding the sampling window to ensure that the minimum point is at a predetermined point, and determining and using a composite energy profile accounting for short term and long term fading effects. The disclosed apparatus include a transceiver employing one or more of the disclosed methods for setting timing when receiving the symbols.

    摘要翻译： 用于设置一个或多个符号的采样定时的方法和装置。 所公开的方法至少有三种类型的有效干扰（EI），并且用于设置用于采样接收符号的采样窗口的定时。 所述方法包括基于确定静态和动态EI两者的能量密度函数来设定定时，确定总能量分布的最小值，并滑动采样窗口以确保最小点在预定点，以及确定和使用 复合能量曲线描述短期和长期衰落影响。 所公开的装置包括采用一种或多种所述方法的收发机，用于在接收符号时设置定时。

    SYSTEM AND METHOD FOR SIGNALING OVERHEAD INFORMATION IN A NETWORK
    47.
    发明申请
    SYSTEM AND METHOD FOR SIGNALING OVERHEAD INFORMATION IN A NETWORK 审中-公开
    用于信号在网络中信号的系统和方法

    公开(公告)号：US20110216745A1

    公开(公告)日：2011-09-08

    申请号：US12876958

    申请日：2010-09-07

    申请人： Fuyun Ling ,  Krishna K. Mukkavilli ,  Ralph A. Gholmieh ,  Bojan Vrcelj

    发明人： Fuyun Ling ,  Krishna K. Mukkavilli ,  Ralph A. Gholmieh ,  Bojan Vrcelj

    IPC分类号： H04W72/04 ,  H04W88/00

    CPC分类号： H04H60/73 ,  H04H20/30 ,  H04H40/18

    摘要： A system for signaling overhead information in a network includes a receiver configured to receive a radio frequency communication signal comprising at least one superframe, the at least one superframe comprising overhead information that identifies a location of a first data stream carried in the at least one superframe, and a trailer associated with the first data stream, the trailer including at least a portion of the overhead information that identifies the location of the first data stream in a subsequent superframe without the receiver processing the overhead information in the subsequent superframe.

    摘要翻译： 用于信令网络中的开销信息的系统包括：接收机，被配置为接收包括至少一个超帧的射频通信信号，所述至少一个超帧包括开销信息，所述开销信息标识在所述至少一个超帧中携带的第一数据流的位置 以及与所述第一数据流相关联的预告片，所述预告片包括在后续超帧中标识所述第一数据流的位置的所述开销信息的至少一部分，而所述接收器处理所述后续超帧中的开销信息。