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    SPREAD-SPECTRUM-SIGNAL RECEPTION APPARATUS AND SPREAD CODE INITIALIZATION METHOD
    72.
    发明申请
    SPREAD-SPECTRUM-SIGNAL RECEPTION APPARATUS AND SPREAD CODE INITIALIZATION METHOD 审中-公开

    公开(公告)号：US20190044572A1

    公开(公告)日：2019-02-07

    申请号：US16073283

    申请日：2016-04-19

    Applicant: Mitsubishi Electric Corporation

    Inventor： Katsuyuki MOTOYOSHI

    IPC: H04B1/7073

    CPC classification number: H04B1/7073 ,  G01S19/01 ,  H04B2001/70706 ,  H04B2201/7073 ,  H04W72/0453

    Abstract: A spread-spectrum-signal reception apparatus includes a controller to obtain a phase comparison value that is a phase of a spread code at a time at which initialization of a phase of the spread code is performed and which corresponds to a timing of a top of a frame of a received signal, and to output an initialization instruction including the phase comparison value when having determined that a current time is within a range of a time window; and a signal processor to demodulate the received signal in accordance with the spread code, to perform a frame synchronizing process on the demodulated signal to detect a frame timing, and to perform the initialization at a timing determined in accordance with a result of comparison between the phase comparison value included in the initialization instruction and a phase of the spread code at the frame timing.

    INTERMITTENT UWB RECEIVER
    74.
    发明申请
    INTERMITTENT UWB RECEIVER 有权

    公开(公告)号：US20160261307A1

    公开(公告)日：2016-09-08

    申请号：US15028647

    申请日：2014-10-10

    Applicant: COMMISSARIAT À L'ÉNERGIE ATOMIQUE ET AUX ÉNERGIES ALTERNATIVES

    Inventor： Frederic HAMEAU ,  Gilles MASSON ,  Laurent OUVRY

    IPC: H04B1/7183 ,  H04B1/7075 ,  H04B1/7115

    CPC classification number: H04B1/7183 ,  H04B1/70758 ,  H04B1/7115 ,  H04B1/7163 ,  H04B2201/70707 ,  H04B2201/7073 ,  H04B2201/70979 ,  H04B2201/7163

    Abstract: A UWB impulse receiver including an RF stage followed by a baseband processing stage. The baseband processing stage includes a Rake filter including a plurality of time fingers, each finger including an integrator of the baseband signal during an acquisition window, a control module, and a detection module estimating the received symbols from the integration results. During a synchronization phase, the control module drives respective positions of the acquisition windows associated with the different fingers, to scan at a reception interval, the RF stage only operating, in a course of the synchronization phase, during the plurality of acquisition windows.

    Abstract translation: UWB脉冲接收机包括RF级，接着是基带处理级。 基带处理级包括包括多个时针的耙式滤波器，每个手指在采集窗口期间包括基带信号的积分器，控制模块以及从积分结果估计接收符号的检测模块。 在同步阶段期间，控制模块驱动与不同手指相关联的采集窗口的相应位置，以在接收间隔扫描，RF阶段仅在同步阶段的过程中在多个采集窗口期间操作。

    Wide area positioning system
    75.
    发明授权
    Wide area positioning system 有权
    广域定位系统

    公开(公告)号：US09408024B2

    公开(公告)日：2016-08-02

    申请号：US14067911

    申请日：2013-10-30

    Applicant: NextNav, LLC

    Inventor： Arun Raghupathy ,  Ganesh Pattabiraman ,  Subramanian S Meiyappan

    IPC: G01S19/46 ,  H04W4/02 ,  G01S19/11 ,  G01S5/10 ,  G01S1/08 ,  G01S19/24 ,  G01S19/42 ,  H04B7/26 ,  H04W72/00 ,  H04W72/04

    CPC classification number: H04B1/7087 ,  G01S1/08 ,  G01S5/10 ,  G01S19/11 ,  G01S19/24 ,  G01S19/42 ,  G01S19/46 ,  H04B1/709 ,  H04B7/2618 ,  H04B2201/7073 ,  H04W4/02 ,  H04W56/005 ,  H04W72/005 ,  H04W72/0446 ,  H04W72/048

    Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.

    Abstract translation: 描述了用于确定接收机的位置的系统和方法。 定位系统包括发射机网络，其包括广播定位信号的发射机。 该定位系统包括一个远程接收器，用于获取和跟踪定位信号和/或卫星信号。 卫星信号是基于卫星的定位系统的信号。 远程接收机的第一模式使用基于终端的定位，其中远程接收机使用定位信号和/或卫星信号来计算位置。 定位系统包括耦合到远程接收器的服务器。 远程接收机的第二操作模式包括基于网络的定位，其中服务器根据定位信号和/或卫星信号计算远程接收器的位置，其中远程接收器接收并向服务器传送定位信号和/或 卫星信号。

    Start of frame delimiter in a communication packet
    77.
    发明授权
    Start of frame delimiter in a communication packet 有权
    通讯包中的帧分隔符开始

    公开(公告)号：US09300353B1

    公开(公告)日：2016-03-29

    申请号：US14683455

    申请日：2015-04-10

    Applicant: NXP B.V.

    Inventor： Andries Hekstra ,  Stefan Drude ,  Frank Leong ,  Arie Koppelaar

    IPC: H04B1/00 ,  H04B1/7073 ,  H04B1/709 ,  H04L29/06

    CPC classification number: H04B1/70735 ,  H04B1/709 ,  H04B2201/7073 ,  H04J13/00 ,  H04L1/0083 ,  H04L1/08

    Abstract: Various exemplary embodiments relate to a device for performing a method of communication transmission. The device may include a memory; a processor configured to: determine a spreading code with low sidelobe levels in its autocorrelation sequence to be used; create a Start of Frame Delimiter (SOFD) for a packet including the spreading code and a cyclic prefix, wherein the cyclic prefix is a portion of the spreading code; and transmit the packet with the SOFD.

    Abstract translation: 各种示例性实施例涉及用于执行通信传输方法的设备。 该设备可以包括存储器; 处理器，其被配置为：在其要使用的自相关序列中确定具有低旁瓣电平的扩展码; 为包括扩展码和循环前缀的分组创建起始帧定界符（SOFD），其中循环前缀是扩展码的一部分; 并用SOFD发送数据包。

    Parallel processing of both code synchronization and frequency synchronization for wireless communication
    78.
    发明授权
    Parallel processing of both code synchronization and frequency synchronization for wireless communication 有权
    并行处理无线通信的代码同步和频率同步

    公开(公告)号：US09107153B1

    公开(公告)日：2015-08-11

    申请号：US13776538

    申请日：2013-02-25

    Applicant: Marvell International Ltd.

    Inventor： Ming Lin ,  Songping Wu ,  Quan Zhou

    IPC: H04J3/06 ,  H04W56/00 ,  H04B7/26

    CPC classification number: H04W56/00 ,  H04B1/7073 ,  H04B1/7087 ,  H04B7/2643 ,  H04B2201/7073

    Abstract: Systems and techniques relating to wireless communications are described. A described technique includes receiving a signal via a wireless channel, performing code synchronization by at least using a peak counter to count peak correlations based on the signal and a known preamble, performing frequency synchronization based on the signal, and using, based on a successful completion of the code synchronization, at least a result of the frequency synchronization to demodulate data from the signal. The technique includes starting the frequency synchronization during the code synchronization when an output value of the peak counter satisfies a predetermined criterion.

    Abstract translation: 描述与无线通信相关的系统和技术。 所描述的技术包括经由无线信道接收信号，至少使用峰值计数器来执行代码同步，以基于该信号和已知的前导码对峰值相关性进行计数，基于该信号执行频率同步，并且基于成功 完成代码同步，至少是频率同步的结果来解调来自信号的数据。 该技术包括当峰值计数器的输出值满足预定标准时，在代码同步期间启动频率同步。

    METHOD AND RECEIVER FOR RECEIVING A COMPOSITE SIGNAL
    79.
    发明申请
    METHOD AND RECEIVER FOR RECEIVING A COMPOSITE SIGNAL 有权
    用于接收复合信号的方法和接收器

    公开(公告)号：US20150200708A1

    公开(公告)日：2015-07-16

    申请号：US14310710

    申请日：2014-06-20

    Applicant: DEERE & COMPANY

    Inventor： WEI YU ,  RICHARD G. KEEGAN

    IPC: H04B1/7075 ,  H04B1/709

    CPC classification number: H04B1/709 ,  G01S19/24 ,  G01S19/30 ,  H04B1/7075 ,  H04B1/70754 ,  H04B1/70755 ,  H04B1/7087 ,  H04B2201/70715 ,  H04B2201/70716 ,  H04B2201/70728 ,  H04B2201/7073 ,  H04L27/2663

    Abstract: A data processor selects a set of BOC correlations in accordance with a BOC correlation function for the sampling period if the primary amplitude exceeds or equals the secondary amplitude for the sampling period. The data processor selects a set of QBOC correlations in accordance with a QBOC correlation function for the sampling period if the secondary amplitude exceeds the primary amplitude for the sampling period. The data processor uses either the BOC correlation function or the QBOC correlation function, whichever with greater amplitude, at each sampling period for carrier tracking. Further, the data processor, through combining two sets of BOC correlations with different chip spacings provides an alternative unambiguous code acquisition of the received signal.

    Abstract translation: 如果主振幅超过或等于采样周期的次级振幅，则数据处理器根据采样周期的BOC相关函数来选择一组BOC相关。 如果次级振幅超过采样周期的主振幅，则数据处理器根据采样周期的QBOC相关函数来选择一组QBOC相关。 在每个采样周期，数据处理器使用BOC相关函数或QBOC相关函数（以较大振幅为准），用于载波跟踪。 此外，数据处理器通过组合具有不同芯片间隔的两组BOC相关性来提供接收信号的替代性明确代码获取。

    WIDE AREA POSITIONING SYSTEM
    80.
    发明申请
    WIDE AREA POSITIONING SYSTEM 有权

    公开(公告)号：US20140368381A9

    公开(公告)日：2014-12-18

    申请号：US14067911

    申请日：2013-10-30

    Applicant: NEXTNAV, LLC

    Inventor： Arun Raghupathy ,  Ganesh Pattabiraman ,  Subramanian S. Meiyappan

    IPC: G01S19/46

    CPC classification number: H04B1/7087 ,  G01S1/08 ,  G01S5/10 ,  G01S19/11 ,  G01S19/24 ,  G01S19/42 ,  G01S19/46 ,  H04B1/709 ,  H04B7/2618 ,  H04B2201/7073 ,  H04W4/02 ,  H04W56/005 ,  H04W72/005 ,  H04W72/0446 ,  H04W72/048

    Abstract: Systems and methods are described for determining position of a receiver. The positioning system comprises a transmitter network including transmitters that broadcast positioning signals. The positioning system comprises a remote receiver that acquires and tracks the positioning signals and/or satellite signals. The satellite signals are signals of a satellite-based positioning system. A first mode of the remote receiver uses terminal-based positioning in which the remote receiver computes a position using the positioning signals and/or the satellite signals. The positioning system comprises a server coupled to the remote receiver. A second operating mode of the remote receiver comprises network-based positioning in which the server computes a position of the remote receiver from the positioning signals and/or satellite signals, where the remote receiver receives and transfers to the server the positioning signals and/or satellite signals.

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