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361 条记录 (耗时 0.033 秒)

    Asymmetrical receivers for wireless communication
    21.
    发明授权
    Asymmetrical receivers for wireless communication 有权

    公开(公告)号：US09900893B2

    公开(公告)日：2018-02-20

    申请号：US15469451

    申请日：2017-03-24

    申请人： AT&T Mobility II LLC

    发明人： Arthur Richard Brisebois

    IPC分类号： H04B1/00 ,  H04W72/04 ,  H04B1/7097 ,  H04B7/0413 ,  H04L5/00 ,  H04W72/00

    CPC分类号： H04W72/0486 ,  H04B1/006 ,  H04B1/1036 ,  H04B1/7097 ,  H04B7/0413 ,  H04B7/0626 ,  H04B7/0871 ,  H04B2201/709709 ,  H04L5/0048 ,  H04L5/006 ,  H04W16/14 ,  H04W72/005

    摘要： Receivers in a mobile device are configured to mitigate receiver overload and fully or nearly-fully utilize available spectrum for communication. Configuration is dictated at least in part by at least one of radio link quality or available receiver specifications, and it can be affected by the mobile device or a base station that serves the mobile device. Receiver configuration includes various spectrally asymmetric receivers that tune respective disparate portions of the available spectrum to maximize utilization thereof in the spectral regions prone to overload conditions. In severe overload conditions, a single receiver can be configured to operate in a frequency band spectrally adjacent to a sub-band that leads to overload conditions when employed for telecommunication. To improve performance, the single receiver configuration can be supplemented with at least one of transmit diversity operation, asymmetric multicarrier spreading, or downlink power boost of asymmetrical multicarrier spreading.

    Method of detecting interference in a satellite radio-navigation signal
    23.
    发明授权
    Method of detecting interference in a satellite radio-navigation signal 有权

    公开(公告)号：US09798013B2

    公开(公告)日：2017-10-24

    申请号：US14526414

    申请日：2014-10-28

    申请人： THALES

    发明人： Marc Revol ,  David Pietin

    IPC分类号： G01S19/21 ,  G01S19/22 ,  H04B1/711 ,  H04B1/7097

    CPC分类号： G01S19/21 ,  G01S19/22 ,  H04B1/7097 ,  H04B1/711

    摘要： Method of detecting interference in a satellite radio-navigation signal, characterized in that it comprises the following steps: determining a first temporal position for which the correlation between the said signal and a local spreading code, offset by the said position, is maximum; determining a plurality of measurements of correlation between the said signal and a local spreading code offset by a plurality of secondary temporal positions, the said plurality of secondary temporal positions and the said first temporal position being regularly spaced; determining, for a plurality of correlation measurement pairs formed by two measurements at two consecutive temporal positions, the phase difference between the two correlation measurements of the said pair; calculating an item of information representative of the standard deviation of the said phase difference; and comparing the said item of information with a detection threshold configured at least as a function of the ratio of the powers of the signal and of the interference.

    Human posture feature extraction in personal emergency response systems and methods
    28.
    发明授权
    Human posture feature extraction in personal emergency response systems and methods 有权
    个人应急系统和方法中人体姿态特征提取

    公开(公告)号：US09568594B2

    公开(公告)日：2017-02-14

    申请号：US15049156

    申请日：2016-02-22

    申请人： ECHOCARE TECHNOLOGIES LTD.

    发明人： Michael Harash ,  Rafael Zack

    IPC分类号： G08B23/00 ,  G01S7/41 ,  H04B1/7097 ,  G01S13/02 ,  G01S13/88

    CPC分类号： G01S7/411 ,  G01S7/417 ,  G01S13/0209 ,  G01S13/886 ,  G01S13/89 ,  G08B21/043 ,  G08B21/0469 ,  H04B1/7097

    摘要： A non-wearable Personal Emergency Response System (PERS) architecture is provided, implementing RF interferometry using synthetic aperture antenna arrays to derive ultra-wideband echo signals which are analyzed and then processed by a two-stage human state classifier and abnormal states pattern recognition. Systems and methods transmit ultra-wide band radio frequency signals at, and receive echo signals from, the environment, process the received echo signals to derive a spatial distribution of echo sources in the environment using spatial parameters of the at least one transmitting and/or receiving antennas, and estimate postures human(s) in the environment by analyzing the spatial distribution with respect to echo intensity. The antennas may be arranged in several linear baselines, implement virtual displacements, and may be set into multiple communicating sub-arrays. The decision process is carried out based on the instantaneous human state (local decision) followed by abnormal states patterns recognition (global decision).

    摘要翻译： 提供了一种不可佩戴的个人应急响应系统（PERS）架构，利用合成孔径天线阵列实现射频干涉测量，得出超宽带回波信号，分析后再由两级人体状态分类器和异常状态模式识别进行处理。 系统和方法在环境中传送超宽带射频信号并从环境接收回波信号，处理所接收的回波信号，以使用至少一个发射和/或发射的空间参数在环境中导出回波源的空间分布， 接收天线，并通过分析相对于回波强度的空间分布来估计环境中的姿势。 天线可以布置在几个线性基线中，实现虚拟位移，并且可以被设置为多个通信子阵列。 决策过程是基于瞬时人类状态（局部决策），随后是异常状态模式识别（全局决策）。

    Using orthogonal space projections to generate a constant false alarm rate control parameter
    29.
    发明授权
    Using orthogonal space projections to generate a constant false alarm rate control parameter 有权
    使用正交空间投影来生成恒定的误报率控制参数

    公开(公告)号：US09529078B2

    公开(公告)日：2016-12-27

    申请号：US14811439

    申请日：2015-07-28

    申请人： Propagation Research Associates, Inc.

    发明人： Ernest Jefferson Holder

    IPC分类号： G01S7/292 ,  G01S7/34 ,  H04B1/10 ,  H04B15/00 ,  H04B1/7097 ,  G01S7/02 ,  H04B7/08 ,  G01S13/04 ,  G01S13/06 ,  H04B1/7105 ,  H04J11/00 ,  G01S7/537

    CPC分类号： G01S7/2927 ,  G01S7/023 ,  G01S7/2922 ,  G01S7/34 ,  G01S7/537 ,  G01S13/04 ,  G01S13/06 ,  H04B1/10 ,  H04B1/1027 ,  H04B1/7097 ,  H04B1/7105 ,  H04B7/0854 ,  H04B15/00 ,  H04J11/0046

    摘要： An adaptive parameter for adjusting a threshold in a sensor system that provides a constant false alarm rate is disclosed. A projection space generator performs projection operations to create a matched projection space and first and second mismatched projection spaces such that each mismatched projection space is orthogonal or nearly orthogonal to the matched projection space. A mitigation engine receives the matched and first mismatched projection spaces and generates a set of weights from one of the first mismatched projection space or both of the matched and first mismatched projection spaces. A second mismatched projection space that is mismatched to both the matched and first mismatched projection spaces is provided to a clutter characterization engine that generates samples from the second mismatched projection space and the set of weights. The adaptive parameter is generated from the samples and is used as an input to a threshold adjuster in a target detector.

    摘要翻译： 公开了一种用于调整提供恒定误报率的传感器系统中的阈值的自适应参数。 投影空间发生器执行投影操作以创建匹配的投影空间以及第一和第二不匹配投影空间，使得每个失配的投影空间与匹配投影空间正交或几乎正交。 缓解引擎接收匹配和第一不匹配的投影空间，并且从第一不匹配投影空间中的一个或匹配和第一不匹配的投影空间中的一个生成一组权重。 与匹配和第一不匹配的投影空间不匹配的第二个不匹配的投影空间提供给从第二个不匹配的投影空间和一组权重生成样本的杂波表征引擎。 自适应参数是从样本生成的，并用作目标检测器中阈值调节器的输入。