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    Device and method for determining the arrival time of a UWB signal
    3.
    发明授权
    Device and method for determining the arrival time of a UWB signal 有权
    用于确定UWB信号的到达时间的装置和方法

    公开(公告)号：US09531430B2

    公开(公告)日：2016-12-27

    申请号：US14695283

    申请日：2015-04-24

    Applicant: Commissariat A L'Energie Atomique et aux Energies Alternatives

    Inventor： Dominique Morche ,  Alfredo-Farid Bautista Delgado

    IPC: H04B1/00 ,  H04B1/7073 ,  H04B1/69 ,  H04L25/49

    CPC classification number: H04B1/7073 ,  H04B1/69 ,  H04B2201/7073 ,  H04B2201/71634 ,  H04L25/4902

    Abstract: A device and a method for determining the arrival time of a UWB signal including at least one pulse modulated at a carrier frequency. The receiver includes a frequency translation stage for translating the UWB signal to a first intermediate frequency and a second intermediate frequency. In an integration stage, the signals translated to the first intermediate frequency and to the second intermediate frequency are integrated on a time window to give a first integration result and a second integration result respectively. The phase deviation is determined between the first and second integration results and from this phase deviation, the arrival time of the UWB signal is deduced.

    Abstract translation: 一种用于确定包括以载波频率调制的至少一个脉冲的UWB信号的到达时间的装置和方法。 接收机包括用于将UWB信号转换为第一中频和第二中频的频率转换级。 在积分阶段，转换为第一中频和第二中频的信号被集成在时间窗上，以分别给出第一积分结果和第二积分结果。 在第一和第二积分结果之间确定相位偏差，并从该相位偏差中推导出UWB信号的到达时间。

    Signal representing data, method and device for generating such signal and method and device for determining the represented data from such signal
    4.
    发明申请
    Signal representing data, method and device for generating such signal and method and device for determining the represented data from such signal 有权
    表示用于产生这种信号的数据的信号，方法和装置以及用于从这样的信号确定表示的数据的方法和装置

    公开(公告)号：US20160134328A1

    公开(公告)日：2016-05-12

    申请号：US14891373

    申请日：2014-05-14

    Applicant: BROADNET INVEST AG

    Inventor： Zbigniew Ianelli

    IPC: H04B1/7073 ,  H04L27/20

    CPC classification number: H04B1/7073 ,  H04B1/707 ,  H04B2001/6908 ,  H04B2201/7073 ,  H04L27/2082

    Abstract: A method and a device are described for generating a signal representing data. The method for generating a signal has a step of modulating a portion (1P, 2P) of the data using phase shift keying and spreading the modulated portion over the at least one frequency base band using at least one highly auto-correlated spread code sequence (1C, 2C) associated with the frequency base band. The method for further has a step of delaying, according to a delay determined using a remainder (1R, 2R) of the data (ID), the at least one spread code sequence (1C, 2C) by a time delay wherein the modulated portion (1MP, 2MP) is spread according the delayed spread code sequence (1DC, 2DC).

    Abstract translation: 描述了用于生成表示数据的信号的方法和装置。 用于产生信号的方法具有使用相移键控来调制数据的部分（1P，2P）的步骤，并且使用至少一个高度自相关的扩展码序列在所述至少一个频率基带上扩展调制部分 1C，2C）与频率基带相关联。 该方法还具有如下步骤：根据使用数据（ID）的余数（1R，2R）确定的延迟，延迟所述至少一个扩展码序列（1C，2C），其中调制部分 （1MP，2MP）根据延迟扩展码序列（1DC，2DC）进行扩展。

    TIMING SYNCHRONIZATION FOR WIRED COMMUNICATIONS
    5.
    发明申请
    TIMING SYNCHRONIZATION FOR WIRED COMMUNICATIONS 审中-公开
    用于有线通信的时序同步

    公开(公告)号：US20150270867A1

    公开(公告)日：2015-09-24

    申请号：US14681655

    申请日：2015-04-08

    Applicant: enModus Limited

    Inventor： Philip YOUNG ,  Andrew James HEATON

    IPC: H04B1/7085 ,  G05B15/02 ,  H05B37/02 ,  H04B1/7075

    CPC classification number: H04B1/7085 ,  H04B1/70751 ,  H04B2001/70706 ,  H04B2201/7073 ,  H05B37/0254 ,  H05B37/0281 ,  Y02B20/42

    Abstract: A wired communications device configured to: receive a spread-spectrum timing-reference signal through a wired communications medium, from a second wired communications device; detect a code-phase of the received timing-reference signal; and transmit data to the second device through the wired communications medium, with a timing that is defined relative to the detected code-phase. Also provided is a master device configured to communicate with the wired communications device. The master device is configured to generate and transmit a spread-spectrum timing-reference signal to one or more first devices, through a wired communications medium and to receive, through the wired communications medium, data transmitted by the one or more first devices.

    Abstract translation: 一种有线通信设备，被配置为：通过有线通信介质从第二有线通信设备接收扩频定时参考信号; 检测所接收的定时参考信号的码相位; 并且通过有线通信介质通过相对于检测到的码相位定义的定时将数据发送到第二设备。 还提供了被配置为与有线通信设备通信的主设备。 主设备被配置为通过有线通信介质生成并向一个或多个第一设备发送扩频定时参考信号，并且通过有线通信介质来接收由一个或多个第一设备发送的数据。

    Wide area positioning system
    7.
    发明授权
    Wide area positioning system 有权
    广域定位系统

    公开(公告)号：US08130141B2

    公开(公告)日：2012-03-06

    申请号：US12557479

    申请日：2009-09-10

    Applicant: Ganesh Pattabiraman ,  Subramanian Meiyappan ,  Arun Raghupathy ,  Hari Sankar

    Inventor： Ganesh Pattabiraman ,  Subramanian Meiyappan ,  Arun Raghupathy ,  Hari Sankar

    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.

    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。

    Clock and data recovery circuit with spread spectrum clocking synthesizer
    8.
    发明授权
    Clock and data recovery circuit with spread spectrum clocking synthesizer 有权

    公开(公告)号：US12003245B2

    公开(公告)日：2024-06-04

    申请号：US17902917

    申请日：2022-09-05

    Applicant: MEDIATEK INC.

    Inventor： Chien-Kai Kao ,  Yi-Hsien Cho

    IPC: H03L7/08 ,  H03L7/085 ,  H04B1/7073 ,  H04L7/00 ,  H04L7/033 ,  H04L27/227

    CPC classification number: H03L7/0807 ,  H03L7/085 ,  H04B1/7073 ,  H04L7/0025 ,  H04L7/0331 ,  H04L27/2271 ,  H04B2201/7073

    Abstract: The present invention provides a circuitry including a PLL and a CDR circuit, wherein the CDR circuit includes a phase detector, a loop filter, a SSC demodulator, a control code generator and a phase interpolator. The PLL is configured to generate a clock signal with SSC modulation and a SSC direction signal. The phase detector is configured to compare phases of an input signal and an output clock signal to generate a detection result, wherein the input signal is with SSC modulation. The loop filter is configured to filter the detection result to generate a filtered signal. The SSC demodulator is configured to receive the SSC direction signal to generate a control signal. The control code generator is configured to generate a control code according to the filtered signal and the control signal to control the phase interpolator to use the clock signal to generate the output clock signal.

    Clock and data recovery circuit
    9.
    发明授权
    Clock and data recovery circuit 有权

    公开(公告)号：US11742892B2

    公开(公告)日：2023-08-29

    申请号：US17734920

    申请日：2022-05-02

    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.

    Inventor： Po-Hsiang Lan ,  Cheng-Hsiang Hsieh

    IPC: H04L7/02 ,  H04B1/7085 ,  H04L7/00

    CPC classification number: H04B1/7085 ,  H04L7/0029 ,  H04B2201/7073

    Abstract: Circuits and methods for performing a clock and data recovery are disclosed. In one example, a circuit is disclosed. The circuit includes an FSM. The FSM includes: a first accumulator, a second accumulator, and a third accumulator. The first accumulator is configured to receive an input phase code representing a phase timing difference between a data signal and a clock signal at each FSM cycle, to accumulate input phase codes for different FSM cycles, and to generate a first order phase code at each FSM cycle. The second accumulator is coupled to the first accumulator and configured to accumulate the input phase codes and first order phase codes for different FSM cycles, and to generate a second order phase code at each FSM cycle. The third accumulator is coupled to the second accumulator and configured to accumulate the input phase codes and second order phase codes for different FSM cycles, and to generate a third order phase code at each FSM cycle.

    COMMUNICATION SYSTEM EMPLOYING CHAOTIC SEQUENCE BASED FREQUENCY SHIFT KEYING SPREADING SIGNALS
    10.
    发明申请
    COMMUNICATION SYSTEM EMPLOYING CHAOTIC SEQUENCE BASED FREQUENCY SHIFT KEYING SPREADING SIGNALS 审中-公开

    公开(公告)号：US20180309477A1

    公开(公告)日：2018-10-25

    申请号：US15961731

    申请日：2018-04-24

    Applicant: Chaos Prime, Inc.

    Inventor： Alan Michaels

    IPC: H04B1/7075 ,  H04L27/20 ,  H04L27/12

    CPC classification number: H04B1/70754 ,  H04B1/707 ,  H04B2001/70724 ,  H04B2201/7073 ,  H04L27/122 ,  H04L27/2028 ,  H04L27/2035 ,  H04L27/2092

    Abstract: A candidate arbitrary-phase spread spectrum modulation technique that offers similar performance to spread continuous phase modulation (CPM) waveforms and additional capabilities for programming a chosen frequency domain spectra into the resulting spread spectrum signal. The proposed chaotic-FSK waveform is derived from high-order sequence-based spread spectrum signals, with multi-bit resolution chaos-based sequences defining incremental phase words, enabling real-time efficient generation of practically non-repeating waveforms. A result of the C-FSK formulation is a parameterized hybrid modulation capable of acting like a traditional sequence-based spread spectrum signal or a traditional frequency shift keying signal depending on chosen parameters. As such, adaptation in this modulation may be easily implemented as a time-varying evolution, increasing the security of the waveform while retaining many efficiently implementable receiver design characteristics of traditional PSK modulations.

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