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。

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.

公开(公告)号：US08693521B2

公开(公告)日：2014-04-08

申请号：US13772234

申请日：2013-02-20

Applicant: Adeptence LLC

Inventor： Ismail Lakkis

IPC: H04B1/707

CPC classification number: H04B1/711 ,  H04B1/707 ,  H04B1/7087 ,  H04B1/7093 ,  H04B1/7105 ,  H04B2201/7073 ,  H04B2201/7097 ,  H04J13/0014 ,  H04J13/107

Abstract: Certain aspects of the present disclosure relate to a method for acquisition of a received spread spectrum signal transmitted over a wired or wireless medium.

Abstract translation: 本公开的某些方面涉及用于获取通过有线或无线介质传输的接收扩频信号的方法。

公开(公告)号：US20130136063A1

公开(公告)日：2013-05-30

申请号：US13751388

申请日：2013-01-28

Applicant: Marvell World Trade Ltd.

Inventor： Hongyuan Zhang ,  Rohit U. Nabar ,  Songping Wu

IPC: H04W56/00

CPC classification number: H04W56/001 ,  H04B1/7073 ,  H04B1/70735 ,  H04B2201/7073 ,  H04J13/0014 ,  H04J13/10 ,  H04L5/0016 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2656 ,  H04L27/2662 ,  H04W56/00

Abstract: A system and method of extracting data from data packets transmitted over a wireless network includes receiving a data packet having a preamble portion and a payload portion. The preamble portion is cross correlated with a first known spreading sequence to generate a first timing signal and the preamble portion is cross correlated with a second known spreading signal to generate a frame timing signal. An impulse is detected in the first timing signal and a first timing parameter is set based upon the detected impulse in the first timing signal. An impulse is detected in the frame timing signal and a frame timing parameter is set based upon the detected impulse in the frame timing signal. Data is extracted from the received payload portion according to the first timing parameter and the frame timing parameter.

Abstract translation: 从通过无线网络发送的数据分组中提取数据的系统和方法包括：接收具有前同步码部分和有效载荷部分的数据分组。 前导码部分与第一已知扩展序列交叉相关，以产生第一定时信号，并且前同步码部分与第二已知扩展信号相互相关，以产生帧定时信号。 在第一定时信号中检测到脉冲，并且基于第一定时信号中检测到的脉冲设置第一定时参数。 在帧定时信号中检测到脉冲，并且基于帧定时信号中检测到的脉冲设置帧定时参数。 根据第一定时参数和帧定时参数从接收到的有效载荷部分提取数据。

公开(公告)号：US20100284444A1

公开(公告)日：2010-11-11

申请号：US12436123

申请日：2009-05-06

Applicant: Ismail Lakkis

Inventor： Ismail Lakkis

IPC: H04B1/707 ,  H04B1/00

CPC classification number: H04B1/711 ,  H04B1/707 ,  H04B1/7087 ,  H04B1/7093 ,  H04B1/7105 ,  H04B2201/7073 ,  H04B2201/7097 ,  H04J13/0014 ,  H04J13/107

Abstract: Certain aspects of the present disclosure relate to a method for acquisition of a received spread spectrum signal transmitted over a wired or wireless medium.

Abstract translation: 本公开的某些方面涉及用于获取通过有线或无线介质传输的接收扩频信号的方法。

公开(公告)号：US20230163765A1

公开(公告)日：2023-05-25

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 ,  H04L7/033 ,  H04L7/00 ,  H04B1/7073

CPC classification number: H03L7/0807 ,  H03L7/085 ,  H04L7/0331 ,  H04L7/0025 ,  H04B1/7073 ,  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.

公开(公告)号：US20180269924A1

公开(公告)日：2018-09-20

申请号：US15921112

申请日：2018-03-14

Applicant: ANRITSU CORPORATION

Inventor： Ittetsu KAJI ,  Kazuhiro YAMANE

IPC: H04B1/7087

CPC classification number: H04B1/7087 ,  H03C3/00 ,  H03L7/18 ,  H04B15/04 ,  H04B2201/70728 ,  H04B2201/7073 ,  H04L7/0331

Abstract: Provided is a technique that can generate a spread spectrum clock signal in all of an upper-spread mode, a down-spread mode, and a center-spread mode. A spread spectrum clock generator (2) spreads a spectrum of a signal with a predetermined carrier frequency to generate a spread spectrum clock signal under the control of a control unit (13). The control unit includes carrier frequency correction control means (13b). The carrier frequency correction control means shifts the predetermined carrier frequency to generate, from one spread mode, a spread spectrum clock signal of another pseudo spread mode.

公开(公告)号：US10044402B2

公开(公告)日：2018-08-07

申请号：US14681655

申请日：2015-04-08

Applicant: enModus Limited

Inventor： Philip Young ,  Andrew James Heaton

IPC: H04B1/00 ,  H04B1/7085 ,  H04B1/7075 ,  H05B37/02 ,  H04B1/707

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.

公开(公告)号：US09960806B2

公开(公告)日：2018-05-01

申请号：US14891373

申请日：2014-05-14

Applicant: BROADNET INVEST AG

Inventor： Zbigniew Ianelli

IPC: H04B1/00 ,  H04B1/7073 ,  H04B1/707 ,  H04L27/20 ,  H04B1/69

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).

公开(公告)号：US20180069554A1

公开(公告)日：2018-03-08

申请号：US15618143

申请日：2017-06-09

Applicant: GLOBAL UNICHIP CORPORATION ,  TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.

Inventor： Yen-Chung CHEN ,  Wen-Juh KANG ,  Yi-Lin LEE

IPC: H03L7/08 ,  H04L7/00 ,  H04B1/7073 ,  H04L7/033

CPC classification number: H03L7/0807 ,  H04B1/7073 ,  H04B15/02 ,  H04B2201/7073 ,  H04L7/0025 ,  H04L7/0087 ,  H04L7/033 ,  H04L7/0331

Abstract: A clock and data recovery module includes a clock and data recovery loop and a spread spectrum clock tracking circuit. The clock and data recovery loop includes a clock and data recovery unit and a first phase interpolator. The first phase interpolator is coupled to the clock and data recovery unit and configured to generate a data clock signal and an edge clock signal according to a phase signal and a reference clock signal. The clock and data recovery unit is configured to generate the phase signal according to a data signal, the data clock signal and the edge clock signal. The spread spectrum clock tracking circuit is configured to generate the reference clock signal according to the data signal, and to transmit the reference clock signal to the first phase interpolator. The spread spectrum clock tracking circuit is decoupled to the clock and data recovery loop.