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118 条记录 (耗时 0.027 秒)

    System and method for radio transmitter acquisition
    34.
    发明授权
    System and method for radio transmitter acquisition 有权
    无线电发射机采集系统和方法

    公开(公告)号：US07103362B2

    公开(公告)日：2006-09-05

    申请号：US10473337

    申请日：2002-03-27

    申请人： Shiquan Wu

    发明人： Shiquan Wu

    IPC分类号： H04Q7/20

    CPC分类号： H04B1/7087 ,  H04B1/70754 ,  H04B1/7077 ,  H04B1/70775 ,  H04L5/0007 ,  H04L5/0048 ,  H04L27/2613 ,  H04L27/2655

    摘要： A method of a receiver determining the timing of a signal transmitted in a time-slotted manner, the signal comprising a sequence of information which is repeated at a known interval and has at least a known minimum length. The method performs correlation operations between groups of received slots of information, the groups spaced by the known interval. The groups are moved through the received signal, adding and removing slots, to locate a maximum correlation value sum for the group which should correspond to the timing of the slot. The method also can be used to determine a frequency offset at the receiver and/or an initial phase.

    摘要翻译： 一种接收机确定以时隙方式发送的信号的定时的方法，所述信号包括以已知间隔重复且具有至少已知最小长度的信息序列。 该方法在接收到的信息时隙的组之间执行相关操作，所述组间隔了已知间隔。 通过接收的信号移动组，添加和移除时隙，以便为应该对应于时隙的定时的组定位最大相关值和。 该方法还可以用于确定接收机处的频率偏移和/或初始相位。

    Timing phase recovery method and apparatus
    37.
    发明授权
    Timing phase recovery method and apparatus 有权
    定时相恢复方法及装置

    公开(公告)号：US06549594B1

    公开(公告)日：2003-04-15

    申请号：US09329365

    申请日：1999-06-10

    申请人： Xixian Chen ,  Song Zhang ,  Shiquan Wu

    发明人： Xixian Chen ,  Song Zhang ,  Shiquan Wu

    IPC分类号： H04L700

    CPC分类号： H04L25/0202

    摘要： A method for timing phase recovery including the steps of first, estimating an open-eye sequence of a received signal, second, estimating a channel response using the open-eye sequence, and third, correlating the estimated channel response with an ideal channel response to determine the peak correlation location. The peak correlation location corresponds to the recovered timing phase. A system including means for estimating an open-eye sequence of a received signal, a channel estimator and a correlator is also provided. The channel estimator is used for estimating a channel response using the open-eye sequence and the received signal. The correlator is used for correlating the estimated channel response with an ideal channel response to determine the peak correlation location, the peak correlation location corresponding to the recovered timing phase.

    摘要翻译： 一种用于定时相位恢复的方法，包括以下步骤：首先估计接收信号的睁眼序列，其次，使用睁眼序列估计信道响应，以及第三，将所估计的信道响应与理想信道响应相关联 确定峰值相关位置。 峰值相关位置对应于恢复的定时相位。 还提供了一种包括用于估计接收信号的睁眼序列的装置，信道估计器和相关器的系统。 信道估计器用于使用睁眼序列和接收信号来估计信道响应。 相关器用于将估计的信道响应与理想信道响应相关以确定峰值相关位置，对应于恢复的定时相位的峰值相关位置。

    Signal time of arrival estimation method and system
    38.
    发明授权
    Signal time of arrival estimation method and system 有权
    信号到达时间估计方法和系统

    公开(公告)号：US06510186B1

    公开(公告)日：2003-01-21

    申请号：US09321818

    申请日：1999-05-28

    申请人： Xixian Chen ,  Song Zhang ,  Shiquan Wu

    发明人： Xixian Chen ,  Song Zhang ,  Shiquan Wu

    IPC分类号： H04L2706

    CPC分类号： H04L25/0202

    摘要： A time delay estimation method including the steps of first, estimating a channel response from a received signal, and second, determining a time delay estimate by correlating the estimated channel response with an ideal channel response. Further, a system including a channel estimator and a correlator is provided. The channel estimator is used for estimating a channel response from a received signal and the correlator is used for estimating a time delay using the channel response and an ideal channel response.

    摘要翻译： 一种时间延迟估计方法，包括以下步骤：首先，从接收信号估计信道响应，其次，通过将所估计的信道响应与理想信道响应相关来确定时延估计。此外，包括信道估计器和 提供相关器。 信道估计器用于从接收信号估计信道响应，并且相关器用于使用信道响应和理想信道响应来估计时间延迟。

    Systems and etiquette for home gateways using white space
    40.
    发明授权
    Systems and etiquette for home gateways using white space 有权
    使用空白的家庭网关系统和礼仪

    公开(公告)号：US08995292B2

    公开(公告)日：2015-03-31

    申请号：US13334763

    申请日：2011-12-22

    申请人： Shiquan Wu ,  Jung Yee

    发明人： Shiquan Wu ,  Jung Yee

    IPC分类号： H04L12/26 ,  H04L27/26 ,  H04W16/02 ,  H04W16/14 ,  H04L5/00 ,  H04W24/00 ,  H04W88/16

    CPC分类号： H04L27/2602 ,  H04L5/0007 ,  H04L5/003 ,  H04W16/02 ,  H04W16/14 ,  H04W24/00 ,  H04W88/16

    摘要： Methods and systems for sharing white space with primary services and other emerging services are provided. Signal distribution within a specified location, such as a dwelling, is performed using a home gateway that identifies unused white space, reserves such white space spectrum, and delivers data to one or more devices at the respective location using the reserved spectrum. Signalling between the devices and the gateway is performed over a shared signalling channel, which enables the gateway to advise the devices from where and when to receive data. The gateway also uses a common spectrum reservation OFDM symbol to advise the neighbouring gateways of the local spectrum reservation.

    摘要翻译： 提供了与主要服务和其他新兴服务共享空白空间的方法和系统。 使用识别未使用的空白空间的家庭网关，保留这样的空白频谱，并使用保留的频谱将数据传送到相应位置的一个或多个设备来执行指定位置（例如住宅）内的信号分配。 通过共享信令信道来执行设备和网关之间的信令，这使得网关能够从哪里和何时接收数据来通知设备。 网关还使用公共频谱预留OFDM符号来向本地频谱预留的相邻网关提供建议。