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    Variable block size adaptation algorithm for noise-robust acoustic echo cancellation
    4.
    发明授权
    Variable block size adaptation algorithm for noise-robust acoustic echo cancellation 失效
    用于噪声鲁棒声学回声消除的可变块大小自适应算法

    公开(公告)号：US5546459A

    公开(公告)日：1996-08-13

    申请号：US146644

    申请日：1993-11-01

    Applicant: Gilbert C. Sih ,  Franklin P. Antonio

    Inventor： Gilbert C. Sih ,  Franklin P. Antonio

    IPC: H03H21/00 ,  H04B3/23 ,  H04M9/08

    CPC classification number: H04B3/23 ,  H03H21/0012

    Abstract: An apparatus that automatically adjusts the adaptation block size for a least-mean square (LMS) adaptive filter depending on the input signal-to-noise ratio (SNR) is disclosed. The apparatus monitors the instantaneous SNR and continually adjusts the block size to provide high noise immunity, thereby increasing the convergence speed of the filter and decreasing the asymptotic mean-square error. An exemplary embodiment of the present invention is presented in the context of acoustic echo cancellation, though it is noted that the adaptive filter of the present invention is useful in any environment in which the noise characteristics are subject to change.

    Abstract translation: 公开了一种根据输入信噪比（SNR）自动调整最小均方（LMS）自适应滤波器的自适应块大小的装置。 该装置监视瞬时信噪比，并持续调整块大小，提供高噪声抗扰度，从而提高滤波器的收敛速度，并减小渐近均方误差。 尽管要注意的是本发明的自适应滤波器在噪声特性可能改变的任何环境中都是有用的，但本发明的示例性实施例在声学回声消除的上下文中呈现。

    System and method for reducing call dropping rates in a multi-beam communication system
    5.
    发明授权
    System and method for reducing call dropping rates in a multi-beam communication system 有权
    用于降低多光束通信系统中的呼叫丢弃率的系统和方法

    公开(公告)号：US06714780B1

    公开(公告)日：2004-03-30

    申请号：US09722001

    申请日：2001-06-12

    Applicant: Franklin P. Antonio ,  Gene W. Marsh ,  Richard A. Stewart ,  Marie M. Bjerede ,  Ananthanarayanan Chockalingam ,  Arthur S. Kerns ,  Brian Butler ,  Matthew S. Grob ,  James T. Determan ,  Douglas Grover ,  Leonard N. Schiff ,  William G. Ames

    Inventor： Franklin P. Antonio ,  Gene W. Marsh ,  Richard A. Stewart ,  Marie M. Bjerede ,  Ananthanarayanan Chockalingam ,  Arthur S. Kerns ,  Brian Butler ,  Matthew S. Grob ,  James T. Determan ,  Douglas Grover ,  Leonard N. Schiff ,  William G. Ames

    IPC: H04Q720

    CPC classification number: H04B7/18534

    Abstract: A method for reducing call dropping rates in a multi-beam communication system. The multi-beam communication system includes a user terminal, a gateway, and a plurality of beam sources, where each beam source projects a plurality of beams, and where a communication link between the user terminal and the gateway is established on one or more beams. The method according to the present invention relies on a messaging protocol between the gateway and the user terminal. Based on messages sent from the user terminal to the gateway, preferably on a preselected periodic basis, the gateway can determine the more desirable beam(s) for transmitting data or information to the user terminal. The messages sent from the user terminal to the gateway contain values representing beam strengths as measured at the user terminal. The gateway uses the user terminal measured beam strengths to select the beams that should be used for transmitting data or information to the user terminal. The beams that should be used are the beams that if used will decrease the call dropping rates and provide a desired level of beam source diversity.

    Abstract translation: 一种用于在多光束通信系统中降低呼叫丢弃率的方法。 多波束通信系统包括用户终端，网关和多个波束源，其中每个波束源投射多个波束，并且在一个或多个波束上建立用户终端和网关之间的通信链路 。 根据本发明的方法依赖于网关与用户终端之间的消息协议。 基于从用户终端发送到网关的消息，优选地以预选的周期性基础，网关可以确定用于向用户终端发送数据或信息的更理想的波束。 从用户终端发送到网关的消息包含表示在用户终端测量的波束强度的值。 网关使用用户终端测量的光束强度来选择应用于向用户终端发送数据或信息的光束。 应该使用的波束是如果使用的波束将降低呼叫丢弃率并提供期望的波束源分集水平。

    Predistortion technique for high power amplifiers
    6.
    发明授权
    Predistortion technique for high power amplifiers 失效
    大功率放大器的预失真技术

    公开(公告)号：US06600792B2

    公开(公告)日：2003-07-29

    申请号：US09105532

    申请日：1998-06-26

    Applicant: Franklin P. Antonio ,  Walid Hamdy ,  Nitin Kasturi ,  Christopher C. Riddle ,  David P. Oses

    Inventor： Franklin P. Antonio ,  Walid Hamdy ,  Nitin Kasturi ,  Christopher C. Riddle ,  David P. Oses

    IPC: H04L2549

    CPC classification number: H03F1/3247 ,  H03F1/3241 ,  H03F2201/3233

    Abstract: A predistortion technique for high power amplifiers includes an adaptive predistortion algorithm that operates independently of data samples to write a set of complex gain values, or predistortion parameters, to a lookup table. The algorithm may be processor-driven. The gain values are taken from the lookup table and multiplied by a complex digital baseband waveform. The gain values may first be subjected to interpolation. The downconverted output of the amplifier is measured to gauge the efficacy of the predistortion. Based on the effect of the predistortion upon the ratio of in-band power to out-of-band power, decisions are made on the set of predistortion parameters for the next iteration of the algorithm. The algorithm runs continuously, perturbing parameters and adapting the predistortion functions accordingly in an effort to continually reflect instantaneous amplitude-modulation and phase-modulation relationships that may change over time with temperature variation or component aging.

    Abstract translation: 用于高功率放大器的预失真技术包括自适应预失真算法，其独立于数据样本操作以将一组复增益值或预失真参数写入查找表。 算法可能是处理器驱动的。 增益值取自查表，并乘以复数数字基带波形。 增益值可以首先进行插值。 测量放大器的下变频输出以测量预失真的功效。 基于预失真对带内功率与带外功率之比的影响，决定了该算法下一次迭代的预失真参数集。 该算法连续运行，扰动参数并相应地调整预失真函数，以努力连续反映随着温度变化或分量老化而随时间变化的瞬时幅度调制和相位调制关系。

    Method and apparatus for cross polarized isolation in a communication system
    7.
    发明授权
    Method and apparatus for cross polarized isolation in a communication system 有权
    通信系统中交叉极化隔离的方法和装置

    公开(公告)号：US06339611B1

    公开(公告)日：2002-01-15

    申请号：US09435941

    申请日：1999-11-09

    Applicant: Franklin P. Antonio ,  Leonard N. Schiff ,  William G. Ames

    Inventor： Franklin P. Antonio ,  Leonard N. Schiff ,  William G. Ames

    IPC: H04B169

    CPC classification number: H04B7/18534 ,  H04B7/10

    Abstract: The information signals are transferred to end users, customers, or service subscribers using at least two signal sources, generally satellites, and polarized radiation. Two polarization modes are employed, with the preferred modes being left-hand and right-hand circularly polarized radiation, although other polarization modes may be employed. The total number of channels can be divided among the polarization modes and transferred to end users either through the use of polarization switching in the receivers to selectively switch between the satellites, or by switching elements in the satellites (sources) to switch between polarization modes used for transmission.

    Abstract translation: 使用至少两个信号源（通常是卫星）和偏振辐射将信息信号传送给终端用户，客户或服务订户。 采用两种偏振模式，其中优选的模式是左旋和右旋圆偏振辐射，尽管可以采用其它偏振模式。 信道的总数可以在极化模式之间划分并且通过使用接收器中的偏振切换来选择性地在卫星之间切换，或者通过卫星（源）中的开关元件在所使用的偏振模式之间切换来传送给终端用户 用于传输。

    Method and apparatus for automatic event detection in a wireless communication system
    8.
    发明授权
    Method and apparatus for automatic event detection in a wireless communication system 有权
    在无线通信系统中自动事件检测的方法和装置

    公开(公告)号：US06124810A

    公开(公告)日：2000-09-26

    申请号：US153732

    申请日：1998-09-15

    Applicant: Michael L. Segal ,  Franklin P. Antonio ,  Sue Elam ,  Judd Erlenbach ,  Kathleen R. de Paolo

    Inventor： Michael L. Segal ,  Franklin P. Antonio ,  Sue Elam ,  Judd Erlenbach ,  Kathleen R. de Paolo

    IPC: B65G61/00 ,  G08G1/123 ,  G08G1/127 ,  G08G1/13

    CPC classification number: G08G1/20

    Abstract: Apparatus and method for determining when a vehicle has arrived or departed from a planned or an unplanned stop, while minimizing or completely eliminating driver intervention. The apparatus comprises a mobile communication terminal located onboard a vehicle for receiving destination information, generally using wireless means, from a central facility or hub. A speedometer also located onboard the vehicle determines the speed of the vehicle and a position sensor onboard the vehicle determines the vehicle position. The vehicle speed and position are provided to a processor, also located onboard the vehicle, which uses the speed and position information to determine a vehicle arrival or departure from a planned or unplanned stop. The processor generates an indication of the event, either arrival or departure, directly to the central facility, to the vehicle operator, or both.

    Abstract translation: 在最小化或完全消除驾驶员干预的情况下，确定车辆何时到达或离开计划停车站的方法。 该装置包括位于车辆上的移动通信终端，用于从中央设施或集线器接收通常使用无线装置的目的地信息。 还位于车辆上的速度计确定车辆的速度，车辆上的位置传感器确定车辆位置。 车辆速度和位置被提供给也位于车辆上的处理器，其使用速度和位置信息来确定车辆到达或离开计划的或计划外的停靠点。 处理器直接向中央设施，车辆操作员或两者发出事件的到达或离开的指示。

    System and method for reducing interference generated by a digital communication device
    9.
    发明授权
    System and method for reducing interference generated by a digital communication device 失效
    用于减少由数字通信设备产生的干扰的系统和方法

    公开(公告)号：US5917812A

    公开(公告)日：1999-06-29

    申请号：US632875

    申请日：1996-04-16

    Applicant: Franklin P. Antonio ,  Klein S. Gilhousen

    Inventor： Franklin P. Antonio ,  Klein S. Gilhousen

    IPC: H04J3/00 ,  H04B1/04 ,  H04B7/26 ,  H04B15/00 ,  H04B15/02

    CPC classification number: H04B15/02

    Abstract: A system and method for reducing radio frequency interference arising in connection with pulsed transmission over time division multiplexed communication channels. In a first embodiment, a subscriber station is nominally assigned all of the slots of each frame of a first transmit channel. By transmitting RF energy substantially continuously, the subscriber station reduces interference arising from pulsed transmission. In a second embodiment, a subscriber station is nominally assigned one or more slots of each frame of a primary channel for conventional transmission of useful information, and is also instructed to continuously transmit RF energy over an auxiliary channel at times other than during the assigned primary channel slots. In this way, interference generated in the vicinity of the subscriber station is reduced due to the substantially continuous transmission of RF energy by the subscriber station. More than one subscriber station may simultaneously utilize the auxiliary channel during reduced interference mode operation.

    Abstract translation: 一种用于在时分复用通信信道上减少与脉冲传输有关的射频干扰的系统和方法。 在第一实施例中，用户台名义地分配了第一传输信道的每个帧的所有时隙。 通过基本连续地发射RF能量，用户站减少了由脉冲传输引起的干扰。 在第二实施例中，订户站被标称地分配主信道的每个帧的一个或多个时隙用于有用信息的常规传输，并且还被指示在辅助信道上连续地发送RF能量，而不是在分配的初级 通道槽。 以这种方式，由于用户台的RF能量的基本上连续的传输，在用户站附近产生的干扰减少了。 在减少的干扰模式操作期间，多于一个用户站可以同时利用辅助信道。

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