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118 条记录 (耗时 0.193 秒)

    Systems and methods for location positioning within radio access systems
    81.
    发明申请
    Systems and methods for location positioning within radio access systems 失效
    无线电接入系统内定位定位的系统和方法

    公开(公告)号：US20090176507A1

    公开(公告)日：2009-07-09

    申请号：US12007198

    申请日：2008-01-08

    申请人： Shiquan Wu ,  Jung Yee

    发明人： Shiquan Wu ,  Jung Yee

    IPC分类号： H04Q7/20

    CPC分类号： H04W64/00 ,  G01S5/04 ,  G01S5/10

    摘要： A method for calculating the geographical position of a user equipment (UE) unit includes collecting position parameters conveying the relative position of the UE unit from two or more base stations using technologies mandated for the modern wireless networks. Particularly, know (predetermined) signals embedded in the downlink and uplink subframes, such as preambles, pilots, ranging codes are used for determining the coordinates of the UE unit. In addition, the methods and systems proposed here take advantage of the multiple antennas systems mandated at both the UE and BTS.

    摘要翻译： 一种用于计算用户设备（UE）单元的地理位置的方法包括使用为现代无线网络授权的技术收集从两个或多个基站传送UE单元的相对位置的位置参数。 特别地，使用嵌入在下行链路中的知道（预定）信号和诸如前导码，导频，测距码的上行链路子帧来确定UE单元的坐标。 此外，这里提出的方法和系统利用了UE和BTS两者所规定的多个天线系统。

    Communication signal equalization systems and methods
    83.
    发明授权
    Communication signal equalization systems and methods 有权
    通信信号均衡系统和方法

    公开(公告)号：US07319690B2

    公开(公告)日：2008-01-15

    申请号：US10912241

    申请日：2004-08-06

    申请人： Shiquan Wu ,  Wen Tong ,  Claude Royer

    发明人： Shiquan Wu ,  Wen Tong ,  Claude Royer

    IPC分类号： H04B7/216

    CPC分类号： H04B1/7105 ,  H04B2201/70701 ,  H04L25/03159 ,  H04L2025/03375 ,  H04L2025/03522

    摘要： Communication signal equalization methods and systems are disclosed. A CDMA signal having a data portion and a known portion including a known or repeated data sequence and received over a multipath communication channel represents a linear convolution between the multipath channel and a transmitted CDMA signal. A channel estimate of the communication channel is determined from the known portion, and the CDMA signal is translated into a new CDMA signal which is a cyclic convolution with the channel estimate. A frequency domain representation of the new CDMA signal is adjusted using the channel estimate to produce a frequency domain representation of an equalized signal.

    摘要翻译： 公开了通信信号均衡方法和系统。 具有数据部分和包括已知或重复的数据序列并通过多路径通信信道接收的已知部分的CDMA信号表示多路径信道和所发送的CDMA信号之间的线性卷积。 从已知部分确定通信信道的信道估计，并且将CDMA信号转换成与信道估计的循环卷积的新的CDMA信号。 使用信道估计来调整新的CDMA信号的频域表示，以产生均衡信号的频域表示。

    System and method for radio transmitter acquisition
    84.
    发明授权
    System and method for radio transmitter acquisition 失效
    无线电发射机采集系统和方法

    公开(公告)号：US07302268B2

    公开(公告)日：2007-11-27

    申请号：US11458568

    申请日：2006-07-19

    申请人： Shiquan Wu ,  Rene Lamontagne

    发明人： Shiquan Wu ,  Rene Lamontagne

    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。

    Hybrid space-time diversity beam forming system
    86.
    发明申请
    Hybrid space-time diversity beam forming system 审中-公开
    混合时空分集波束形成系统

    公开(公告)号：US20060040706A1

    公开(公告)日：2006-02-23

    申请号：US10535261

    申请日：2003-11-18

    申请人： Shiquan Wu ,  John Litva

    发明人： Shiquan Wu ,  John Litva

    IPC分类号： H04B1/06 ,  H04J3/06 ,  H04B7/00 ,  H04M1/00

    CPC分类号： H04W16/28 ,  H01Q1/246 ,  H01Q3/2605 ,  H01Q21/08 ,  H04B7/0408 ,  H04B7/0617 ,  H04B7/086 ,  H04B7/2662 ,  H04J3/0682 ,  H04L7/0041 ,  H04W24/00 ,  H04W52/42 ,  H04W56/0045 ,  H04W88/08

    摘要： A method of beam forming is provided for an appliqué intelligent antenna system. The appliqué system uses a watchdog function to monitor broadcast channels of an existing mobile wireless base station to which it is attached. The appliqué system synchronizes itself in frequency and time to the base station. In GSM timing delays are used to prevent collision of timeslots from various mobile terminals. The appliqué system uses this time delay mechanism to compensate for its own processing delays so that its presence is transparent to the existing base station. Angle of arrival calculations are made to determining beamforming parameters. The antenna of the four element antenna system are separated by is (51/2−1)/2 times the wavelength. Angle of arrival for the strongest uplink multipath signal are used to direct the downlink beam.

    摘要翻译： 提供了一种用于贴布式智能天线系统的波束形成方法。 贴花系统使用看门狗功能来监视其所连接的现有移动无线基站的广播信道。 贴花系统在频率和时间上与基站同步自身。 在GSM中，定时延迟用于防止来自各种移动终端的时隙的冲突。 贴花系统使用这种延时机制来补偿其自身的处理延迟，使其存在对现有基站是透明的。 进行角度计算是为了确定波束成形参数。 四元天线系统的天线由波长的（5×1/2/2）/ 2倍分开。 用于最强上行多径信号的到达角用于引导下行链路波束。

    Method of and apparatus for communication via multiplexed links
    88.
    发明申请
    Method of and apparatus for communication via multiplexed links 审中-公开
    通过复用链路进行通信的方法和装置

    公开(公告)号：US20050002360A1

    公开(公告)日：2005-01-06

    申请号：US10484701

    申请日：2002-07-17

    申请人： Rene Lamontagne ,  Shiquan Wu

    发明人： Rene Lamontagne ,  Shiquan Wu

    IPC分类号： H04J13/00 ,  H04L5/02 ,  H04L27/26 ,  H04B7/216

    CPC分类号： H04L27/2608 ,  H04J13/0077 ,  H04L5/026

    摘要： A communication structure and method which allows connection-like and connectionless communications to be provided on a multiplexed link is provided. The structure and method can make efficient use of available transmission capacity and/or network resources while providing both types of communication and hybrids. Connection-like communications can be provided by a dedicated code division multiplexed channels having allocated transmission capacity dedicated to the communication while connectionless communication can be provided by a shared orthogonal frequency division multiplexed channel through which data can be transmitted to subscribers. In an embodiment, the shared channel transmits inverse fast fourier transformed frequency sub-bands allocated to one or more of the subscribers. The allocation of the sub-bands can be fixed, or dynamically quantized or proportional.

    摘要翻译： 提供了允许在多路复用链路上提供连接和无连接通信的通信结构和方法。 结构和方法可以有效地利用可用的传输容量和/或网络资源，同时提供两种类型的通信和混合。 可以通过具有分配专用于通信的传输容量的专用码分多路复用信道来提供连接状通信，而无连接通信可以通过共享的正交频分多路复用信道提供，数据可以通过该正交频分复用信道发送给用户。 在一个实施例中，共享信道发送分配给一个或多个订户的反向快速傅里叶变换的频率子带。 子带的分配可以是固定的，或动态量化的或成比例的。

    Method for positioning with low geometrical dilution of position (GDOP)
    89.
    发明授权
    Method for positioning with low geometrical dilution of position (GDOP) 有权
    低几何位置稀释定位方法（GDOP）

    公开(公告)号：US06353744B1

    公开(公告)日：2002-03-05

    申请号：US09374103

    申请日：1999-08-16

    申请人： Shiquan Wu ,  Song Zhang ,  Xixian Chen

    发明人： Shiquan Wu ,  Song Zhang ,  Xixian Chen

    IPC分类号： H04Q720

    CPC分类号： H04W64/00 ,  G01S5/10

    摘要： The invention is directed to positioning with low geometrical dilution of position (GDOP). Generally, the invention is a method for positioning including the steps of transmitting a asynchronous signal from a mobile to at least one base station; receiving the asynchronous signal at each base station; for each base station, determining a spherical line of position for the mobile using the received non-synchronous signal; and positioning the mobile using the spherical lines of position. The invention is a position location system which has the merits of both spherical and hyperbolic positioning systems while avoiding their drawbacks. The invention is less sensitive to GDOP and the mathematical model is easier to handle than the known hyperbolic system. The mathematical model embodied in the invention is equivalent to a convex quadratic probing subject to an ice-cream cone constraint. The invention also embodies an efficient algorithm for this optimization model. The invention is primarily directed to position location for E911, it can also applied to any other fields where position location is used, such as, but not limited to, radar positioning, satellite positioning and navigation systems.

    摘要翻译： 本发明涉及用几何稀释几何位置（GDOP）进行定位。 通常，本发明是一种定位方法，包括以下步骤：从移动站向至少一个基站发送异步信号; 在每个基站接收异步信号; 对于每个基站，使用所接收的非同步信号确定移动站的球面行位线; 并使用球面线定位移动设备。 本发明是位置定位系统，其具有球面和双曲线定位系统的优点，同时避免了它们的缺点。 本发明对GDOP较不敏感，并且数学模型比已知的双曲线系统更容易处理。 本发明中体现的数学模型等同于经受冰淇淋锥限制的凸二次探测。 本发明还体现了该优化模型的有效算法。 本发明主要涉及用于E911的位置定位，它还可以应用于使用位置定位的任何其它领域，例如但不限于雷达定位，卫星定位和导航系统。

    System and method for data distribution in VHF/UHF bands
    90.
    发明授权
    System and method for data distribution in VHF/UHF bands 有权
    VHF / UHF频带数据分布的系统和方法

    公开(公告)号：US09124476B2

    公开(公告)日：2015-09-01

    申请号：US13596982

    申请日：2012-08-28

    申请人： Shiquan Wu ,  Jung Yee

    发明人： Shiquan Wu ,  Jung Yee

    IPC分类号： H04J11/00 ,  H04J7/00 ,  H04L27/26

    CPC分类号： H04L27/2626 ,  H04L27/2647 ,  H04W84/12

    摘要： Whitespace devices can use unused television frequencies for transmission and reception of WiFi OFDM signals. Three contiguous bands, such as former channels 2, 3, and 4, may be bonded together to define a whitespace band. In order to fit a WiFi OFDM signal into this whitespace band, a whitespace device compresses the bandwidth of each WiFi OFDM signal using a specific spectrum mask. Very low transmission power is needed for the modified WiFi OFDM signals, eliminating the need for high power amplifiers and most of the WiFi OFDM designs such as PHY and MAC can be reused with minor modifications.

    摘要翻译： 空白设备可以使用未使用的电视频率来发送和接收WiFi OFDM信号。 诸如前通道2,3和4之间的三个连续的波段可以结合在一起以限定空白波段。 为了将WiFi OFDM信号装入该空白频带，空白设备使用特定的频谱掩模来压缩每个WiFi OFDM信号的带宽。 对于经修改的WiFi OFDM信号需要非常低的发射功率，消除了对大功率放大器的需要，并且可以重复使用大多数诸如PHY和MAC的WiFi OFDM设计。