公开(公告)号：US08884819B2

公开(公告)日：2014-11-11

申请号：US13137548

申请日：2011-08-25

申请人： Shiquan Wu

发明人： Shiquan Wu

IPC分类号： H04B7/00 ,  G01S5/04 ,  H04B7/06

CPC分类号： H04B7/0602

摘要： This invention discloses directional antenna systems, antenna combining and transmission antenna selection mechanism for wireless communication terminals such mobile handsets, mobile embedded laptops, mobile CPEs (Customer premises equipment), nomadic wireless CPEs, fixed wireless terminals and etc. The disclosed systems and methods only require analog circuitry and compass readings therefore are easy to implement and well fit into the current wireless terminals architectures. The inventive systems and methods resolve the problem that a directional antenna may not receive properly when user turn around and the antenna direction is deviated from transmitter; the inventive systems and methods further reduce the interference caused by omni antenna systems by selecting a directional antenna for transmit.

摘要翻译： 本发明公开了用于无线通信终端的定向天线系统，天线组合和发射天线选择机制，例如移动手机，移动嵌入式笔记本电脑，移动CPE（客户驻地设备），游牧无线CPE，固定无线终端等。仅公开的系统和方法 因此，需要模拟电路和罗盘读数容易实现，并且很适合当前的无线终端架构。 本发明的系统和方法解决了当用户转向并且天线方向偏离发射机时定向天线可能不能正确接收的问题; 本发明的系统和方法通过选择用于传输的定向天线来进一步减少由全向天线系统引起的干扰。

公开(公告)号：US08792589B2

公开(公告)日：2014-07-29

申请号：US12779782

申请日：2010-05-13

申请人： Shiquan Wu ,  Vajira Samarasooriya

发明人： Shiquan Wu ,  Vajira Samarasooriya

IPC分类号： H04N5/455

CPC分类号： H04N17/004 ,  H03J1/0091 ,  H04B1/76 ,  H04H60/41 ,  H04H60/43 ,  H04N5/50

摘要： A wireless microphone system broadcasts a pilot tone at the designated ATSC pilot position in the TV Band channel being used by the wireless microphone system. The pilot tone is a readily detectable waveform transmitted in the ATSC pilot position. The pilot tone can be generated by any one of: a standalone pilot tone generator; a pilot tone generator incorporated into a wireless microphone receiver; or, a pilot tone generator incorporated into a wireless microphone.

摘要翻译： 无线麦克风系统在由无线麦克风系统使用的TV频道信道中的指定ATSC导频位置广播导频音。 导频音是在ATSC导频位置发送的易于检测的波形。 导频音可以由以下任何一种产生：独立导频音发生器; 并入无线麦克风接收机的导频音发生器; 或者组合到无线麦克风中的导频音发生器。

公开(公告)号：US08350970B2

公开(公告)日：2013-01-08

申请号：US12571153

申请日：2009-09-30

申请人： Neil Birkett ,  Shiquan Wu

发明人： Neil Birkett ,  Shiquan Wu

IPC分类号： H04N5/50 ,  H04N17/02 ,  H04B1/18 ,  H04B1/04 ,  G06F3/033

CPC分类号： H04H40/18 ,  H04B1/0064 ,  H04H2201/60 ,  H04L25/0278 ,  H04N21/4263 ,  H04N21/6112

摘要： A radio frequency front end for a television band receiver and spectrum sensor includes a first plurality of adaptive matching networks connected to a signal summer that combines signals received by the first plurality of antennas respectively connected to the first plurality of adaptive matching networks and outputs a combined signal to each of a second plurality of downconverter/tuners. The downconverter/tuners are respectively or collectively connected to an analog to digital converter that converts output of the second plurality of downconverter/tuners into at least one digital signal that is output to the television band receiver and spectrum sensor.

摘要翻译： 用于电视频带接收机和频谱传感器的射频前端包括连接到信号加法器的第一多个自适应匹配网络，其组合由分别连接到第一多个自适应匹配网络的第一多个天线接收的信号，并输出组合 信号到第二多个下变频器/调谐器中的每一个。 下变频器/调谐器分别或共同地连接到模数转换器，其将第二多个下变频器/调谐器的输出转换成输出到电视频带接收机和频谱传感器的至少一个数字信号。

公开(公告)号：US08264996B2

公开(公告)日：2012-09-11

申请号：US12684540

申请日：2010-01-08

申请人： Shiquan Wu ,  Wen Tong ,  Claude Royer ,  Edward Sich

发明人： Shiquan Wu ,  Wen Tong ,  Claude Royer ,  Edward Sich

IPC分类号： G08C17/00

CPC分类号： H04W52/0216 ,  H04B1/7103 ,  H04B2201/70714 ,  H04L5/0016 ,  H04L27/2618 ,  H04L27/2647 ,  H04L27/265 ,  H04W52/0229 ,  Y02D70/122 ,  Y02D70/1242

摘要： Wireless devices, transmitters, systems and methods are provided that have a narrow band signalling channel and a wide band channel, for example an OFDM channel. In order to save power, the wireless device is nominally powered down with the exception of a receiver specific to the narrow band signalling channel. Once instructed to do so over the narrow band signalling channel, the wireless device wakes up the rest of its wide band receive circuitry.

摘要翻译： 提供了具有窄带信令信道和宽带信道（例如OFDM信道）的无线设备，发射机，系统和方法。 为了节省电力，除了窄带信令信道专用的接收机之外，无线设备名义上关闭电源。 一旦通过窄带信令信道指示这样做，无线设备唤醒其宽带接收电路的其余部分。

公开(公告)号：US20120052821A1

公开(公告)日：2012-03-01

申请号：US13137465

申请日：2011-08-18

申请人： Dongxun Jia ,  Shiquan Wu

发明人： Dongxun Jia ,  Shiquan Wu

IPC分类号： H04B1/38

CPC分类号： H04B1/126 ,  H04B7/0825 ,  H04B7/0828 ,  H04B7/0857

摘要： This is invention discloses a perturbation antenna system for wireless communication terminals such mobile handsets, mobile embedded laptops, mobile CPEs (Customer premises equipment), nomadic wireless CPEs, fixed wireless terminals and etc. The perturbation antenna output is analogically combined with that of the primary antenna. The combined result is to re-create the antenna pattern shape and its direction pointing in order to achieve gains by user intercept. A variable delay circuitry is equipped to the perturbation antenna therefore the user's interception can be enforced via programmable apparatus either by manually or by digital inputs. The user can tune the delay parameters meanwhile observe the antenna pattern changes and the call quality until satisfaction.

摘要翻译： 本发明公开了一种用于诸如移动手机，移动嵌入式笔记本电脑，移动CPE（客户驻地设备），游牧无线CPE，固定无线终端等的无线通信终端的扰动天线系统。扰动天线输出与主要天线输出类似地组合 天线。 组合的结果是重新创建天线图案形状及其方向指向，以便通过用户截取实现增益。 可变延迟电路被配置到扰动天线，因此可以通过手动或数字输入通过可编程设备实施用户的截取。 用户可以调整延迟参数，同时观察天线方向的变化和通话质量，直到满意。

公开(公告)号：US20110280413A1

公开(公告)日：2011-11-17

申请号：US12779782

申请日：2010-05-13

申请人： Shiquan Wu ,  Vajira Samarasooriya

发明人： Shiquan Wu ,  Vajira Samarasooriya

IPC分类号： H04B3/00 ,  H04N5/50 ,  H04N7/01

CPC分类号： H04N17/004 ,  H03J1/0091 ,  H04B1/76 ,  H04H60/41 ,  H04H60/43 ,  H04N5/50

摘要： A wireless microphone system broadcasts a pilot tone at the designated ATSC pilot position in the TV Band channel being used by the wireless microphone system. The pilot tone is a readily detectable waveform transmitted in the ATSC pilot position. The pilot tone can be generated by any one of: a standalone pilot tone generator; a pilot tone generator incorporated into a wireless microphone receiver; or, a pilot tone generator incorporated into a wireless microphone.

摘要翻译： 无线麦克风系统在由无线麦克风系统使用的TV频道信道中的指定ATSC导频位置广播导频音。 导频音是在ATSC导频位置发送的易于检测的波形。 导频音可以由以下任何一种产生：独立导频音发生器; 并入无线麦克风接收机的导频音发生器; 或者组合到无线麦克风中的导频音发生器。

公开(公告)号：US08018950B2

公开(公告)日：2011-09-13

申请号：US12076315

申请日：2008-03-17

申请人： Shiquan Wu ,  Jung Yee

发明人： Shiquan Wu ,  Jung Yee

IPC分类号： H04L12/28 ,  H04L12/56

CPC分类号： G04G7/00 ,  H04J3/0635 ,  H04J3/0638 ,  H04J3/0658

摘要： A method for synchronizing network elements to a global clock derived from the GPS clock acquired by a plurality of base stations. The global clock is distributed to controllers of various networks, and from there to network access devices. The network access devices further distribute the global clock to various wire-line and local wireless networks and from there, to the users served by these networks. The user equipment is enabled with a simple clock discipliner that adjusts the local clock to the global clock, resulting in a reliable synchronization across the converged communication networks.

摘要翻译： 一种用于将网络元件与由多个基站获取的GPS时钟导出的全局时钟同步的方法。 全局时钟分配给各种网络的控制器，从那里到网络接入设备。 网络接入设备进一步将全球时钟分配给各种有线和本地无线网络，并从那里向由这些网络服务的用户分发。 用户设备启用了简单的时钟规则，可以将本地时钟调整到全局时钟，从而在融合的通信网络中实现可靠的同步。

公开(公告)号：US20110051862A1

公开(公告)日：2011-03-03

申请号：US12551980

申请日：2009-09-01

申请人： Lingjie Li ,  Shiquan Wu

发明人： Lingjie Li ,  Shiquan Wu

IPC分类号： H04L27/06

CPC分类号： H04L27/2665 ,  H04L27/2607 ,  H04L27/2663 ,  H04L27/2678 ,  H04L27/2688

摘要： A received signal comprises a continuous sequence of symbols φ1, φ2, . . . φn, each represented by a sequence of samples X0, X2, . . . Xn−1, and wherein the symbols have a guard period GP of duration Tgp at the beginning thereof. Each guard period contains a cyclic prefix with the same subsequence of samples as a tail end portion of the associated symbol. The symbols are identified by delaying the received signal by a fixed number of samples, computing the correlation of the received signal with the delayed signal, computing the summation of said correlation over a window of duration Ti, wherein Ti>Tgp, and sliding the window over the correlation to find a characteristic point or region. The start of each symbol for further processing is selected from the characteristic point or region. By increasing the duration of the window, more robust performance can be achieved, especially in multipath conditions.

摘要翻译： 接收到的信号包括连续的符号序列＆phgr; 1，＆phgr; 2，。 。 。 每个由样本X0，X2，...的序列表示。 。 。 Xn-1，并且其中符号在其开始处具有持续时间Tgp的保护周期GP。 每个保护周期包含循环前缀，其具有与相关联的符号的尾端部分相同的样本子序列。 通过将接收到的信号延迟固定数量的样本来识别符号，计算接收信号与延迟信号的相关性，计算持续时间Ti的窗口上的所述相关性的总和，其中Ti> Tgp，并且滑动窗口 在相关性上找到特征点或区域。 从特征点或区域中选择用于进一步处理的每个符号的开始。 通过增加窗口的持续时间，可以实现更强大的性能，特别是在多径条件下。

公开(公告)号：US20110043710A1

公开(公告)日：2011-02-24

申请号：US12543259

申请日：2009-08-18

申请人： Vajira Samarasooriya ,  Shiquan Wu

发明人： Vajira Samarasooriya ,  Shiquan Wu

IPC分类号： H04N5/50

CPC分类号： H04N5/50 ,  H03J1/0091 ,  H04L27/0006 ,  H04N21/42203 ,  H04N21/4345 ,  H04N21/4383 ,  H04W16/14

摘要： A television band device has DTV pilot signal detection logic that generates DTV pilot signal detection decisions associated with a monitored television channel. A wireless microphone detection logic generates wireless microphone detection decisions associated with the monitored television channel. A sensing manager receives DTV pilot signal detection decisions and the wireless microphone detection decisions and analyzes at least one the respective decisions to determine whether the monitored television channel is available white space.

摘要翻译： 电视频带设备具有DTV导频信号检测逻辑，其产生与被监视的电视频道相关联的DTV导频信号检测决策。 无线麦克风检测逻辑产生与所监视的电视频道相关联的无线麦克风检测决定。 感测管理器接收DTV导频信号检测决策和无线麦克风检测决定并分析至少一个相应的决定以确定被监视的电视频道是否是可用的空白空间。

公开(公告)号：US07801019B2

公开(公告)日：2010-09-21

申请号：US11582663

申请日：2006-10-17

申请人： Shiquan Wu ,  Wen Tong ,  Leo Strawczynski

发明人： Shiquan Wu ,  Wen Tong ,  Leo Strawczynski

IPC分类号： H04J11/00

CPC分类号： H04B7/068 ,  H04B7/0417 ,  H04B7/063 ,  H04B7/0669 ,  H04B7/0689 ,  H04B7/0697 ,  H04B7/0891 ,  H04L1/0001 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0025 ,  H04L1/0026 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0662 ,  H04L1/0675 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0025 ,  H04L5/0026 ,  H04L5/0046 ,  H04L5/006 ,  H04L27/0008 ,  H04L27/2604 ,  H04L27/2628 ,  H04L27/2646 ,  H04L27/2647

摘要： 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.