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    • 82. 发明授权
    • Communication system for mobile users using adaptive antenna with auxiliary elements
    • 使用自适应天线与辅助元件的移动用户的通信系统
    • US08706167B2
    • 2014-04-22
    • US13771601
    • 2013-02-20
    • The DIRECTV Group, Inc.
    • Donald C. D. ChangWah L. LimMing U. Chang
    • H04M1/00
    • H04W84/042H01Q1/246H01Q3/2605H01Q25/00H04B7/0408H04W16/26H04W16/28H04W88/085
    • A communication system communications system for communicating with mobile user terminals includes a base station having an adaptive antenna with a plurality of panels. Each of the plurality of panels are arranged to have a different field of view. Each panel has a plurality of main array antenna elements for simultaneously generating a plurality of dynamic communication beams that move with the mobile terminals and a plurality of auxiliary elements separate from the plurality of main array antenna elements used for interference cancelling signals cancelling interference between the plurality of dynamic communication beams generated by the plurality of main array elements. A gateway station is coupled to the base station. The gateway station forms a plurality of beams commands for each of the plurality of panels by communicating a plurality of control signals to the base station to form the plurality of dynamic communication beams.
    • 用于与移动用户终端通信的通信系统通信系统包括具有多个面板的自适应天线的基站。 多个面板中的每一个被布置成具有不同的视场。 每个面板具有多个主阵列天线元件,用于同时产生与移动终端一起移动的多个动态通信波束,以及与用于干扰消除信号的多个主阵列天线元件分开的多个辅助元件,以消除多个 由多个主阵列元件产生的动态通信光束。 网关站耦合到基站。 网关站通过向基站传送多个控制信号来形成多个动态通信波束,从而形成多个面板中的每一个的多个波束命令。
    • 83. 发明申请
    • FREQUENCY DRIFT ESTIMATION FOR LOW COST OUTDOOR UNIT FREQUENCY CONVERSIONS AND SYSTEM DIAGNOSTICS
    • 低成本室外频率转换和系统诊断的频率估计
    • US20130331025A1
    • 2013-12-12
    • US13964940
    • 2013-08-12
    • The DIRECTV Group, Inc.
    • Robert F. Popoli
    • H04H40/90
    • H04H40/90H03J7/04
    • Systems and devices for controlling frequency drift in satellite broadcast systems. A receiver antenna system for a direct broadcast satellite signal communications system in accordance with one or more embodiments of the present invention comprises an oscillator, a mixer, coupled to the oscillator, for converting satellite signals at a first frequency to signals at an intermediate frequency, an analog-to-digital (A/D) converter, coupled to the mixer, for receiving the signals at the intermediate frequency and for converting the signals at the intermediate frequency at near-real-time to a digital data stream, a Digital Signal Processor (DSP), coupled to the A/D converter, for processing the digital data stream, and a drift estimator, coupled to the DSP, the drift estimator determining a frequency drift of the oscillator, wherein the receiver antenna system corrects the frequency drift of the oscillator using the determined frequency drift.
    • 用于控制卫星广播系统中频率漂移的系统和设备。 根据本发明的一个或多个实施例的用于直播广播卫星信号通信系统的接收机天线系统包括耦合到振荡器的振荡器,混频器,用于将第一频率的卫星信号转换为中频信号, 耦合到混频器的模拟数字(A / D)转换器,用于接收中频处的信号,并将接近实时的中频信号转换成数字数据流;数字信号 耦合到A / D转换器的用于处理数字数据流的处理器(DSP)和耦合到DSP的漂移估计器,漂移估计器确定振荡器的频率漂移,其中接收器天线系统校正频率漂移 的振荡器使用确定的频率漂移。