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    SYNCHRONIZATION STRATEGY AND ARCHITECTURE FOR SPREAD-SPECTRUM RECEIVERS
    1.
    发明授权
    SYNCHRONIZATION STRATEGY AND ARCHITECTURE FOR SPREAD-SPECTRUM RECEIVERS 有权

    公开(公告)号：EP1525673B1

    公开(公告)日：2018-08-29

    申请号：EP03771708.9

    申请日：2003-07-22

    申请人： Thomson Licensing DTV

    发明人： MARGETTS, Adam, Robert ,  LITWIN, Louis, Robert Jr.

    IPC分类号： H04B1/7073 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/7093

    CPC分类号： H04B1/7093 ,  H04B1/70735 ,  H04B1/7075 ,  H04B1/70755 ,  H04B1/70775

    摘要： An apparatus for synchronizing the reception of a spread-spectrum signal includes a synchronization apparatus having a code-matched filter, a running average unit coupled to the filter, a peak detector coupled to the running average unit, and a synchronizer coupled to the peak detector for providing an index of a peak. A corresponding method includes receiving a spread-spectrum signal having a period comprising a plurality of indexable samples, maintaining a mean array comprising a running mean value for each indexable sample over a variable number of periods, detecting a peak value of the array, calculating an average value of the array, computing a peak-to-average ratio in accordance with the detected peak value and the calculated average value, comparing the peak-to-average ratio against a time-varying threshold, and synchronizing the received signal when the peak-to-average ratio exceeds the current value of the threshold.

    Systems, methods, and apparatus for jammer rejection
    2.
    发明公开
    Systems, methods, and apparatus for jammer rejection 有权
    Systeme，Verfahren und Vorrichtung zurStörsenderabwehr

    公开(公告)号：EP2447736A2

    公开(公告)日：2012-05-02

    申请号：EP11007819.3

    申请日：2005-12-01

    申请人： Qualcomm Incorporated

    发明人： Simic, Emilija M. ,  Patrick, Christopher ,  Rowitch, Douglas N.

    IPC分类号： G01S19/21 ,  H04B1/7075 ,  G01S19/29 ,  H04K3/00 ,  H04B1/7077 ,  G01S19/22 ,  G01S19/34

    CPC分类号： G01S19/34 ,  G01S19/03 ,  G01S19/21 ,  G01S19/22 ,  G01S19/29 ,  H04B1/7077 ,  H04K3/228

    摘要： A method according to an embodiment obtains a list of peaks for each of a number of frequency hypotheses. Each peak has an energy result and corresponds to a code phase hypothesis. Embodiments include methods and apparatus that may be used in identifying a location of a signal (such as a GPS signal) in a two-dimensional search space. Location information may be further applied to operations such as signal acquisition, signal tracking, position location of a receiver, and timing operations such as the synchronization of one or more other processes.

    摘要翻译： 根据实施例的方法获得多个频率假设中的每一个的峰值列表。 每个峰值具有能量结果，并对应于码相位假设。 实施例包括可以用于识别二维搜索空间中的信号（例如GPS信号）的位置的方法和装置。 位置信息可以进一步应用于诸如信号获取，信号跟踪，接收机的位置定位等操作，以及诸如一个或多个其它过程的同步的定时操作。

    CELLULAR TELEPHONY SEARCHER
    6.
    发明公开
    CELLULAR TELEPHONY SEARCHER 有权
    探测器用于蜂窝电话

    公开(公告)号：EP1103126A4

    公开(公告)日：2004-06-16

    申请号：EP00936466

    申请日：2000-06-02

    申请人： DSPC TECH LTD

    发明人： SOKOLOV DOTAN ,  BEN-ELI DAVID

    IPC分类号： H04B1/707 ,  H04B1/7075 ,  H04B1/7077 ,  H04B1/708 ,  H04B1/709

    CPC分类号： H04B1/70775 ,  H04B1/70756 ,  H04B1/708 ,  H04B1/709 ,  H04B2201/70701 ,  H04B2201/70702 ,  H04B2201/70707

    摘要： A searcher (10) for mobile station of a cellular telephony network. Pilot signal from nearby base stations are correlated with a pseudonoise sequence inside a search window, using a bank of correlators (20). Each correlator (20) is assigned a different delay, from among a sequence of delays in the window (14). At each delay, correlation is performed initially for a first dwell time. If the resulting correlation value exceeds a threshold, the correlation is continued for a second dwell time. Otherwise, the correlator (20) is set to the next delay in the sequence. Only the outputs of second dwell correlations are used to identify the nearest base station. Some correlations may perform first dwell correlations at new delays in the same time that other correlators are still performing second dwell correlations at old delays in the window.

    PREAMBLE DETECTION AT LOW SIGNAL-TO-NOISE LEVELS
    8.
    发明公开
    PREAMBLE DETECTION AT LOW SIGNAL-TO-NOISE LEVELS 审中-公开
    前导检测在低信号噪声等级

    公开(公告)号：EP2659612A1

    公开(公告)日：2013-11-06

    申请号：EP11808798.0

    申请日：2011-12-21

    申请人： Microchip Technology Incorporated

    发明人： NEMETH, Jozsef, G.

    IPC分类号： H04L7/04 ,  H04B1/7077

    CPC分类号： H04B1/7077 ,  H04L7/046

    摘要： A preamble detector has a correlator outputting for every sample position of the preamble part of an incoming sampled signal stream a score and associated class value; and a multiple cluster unit receiving the class and score output values from the correlator, wherein a first cluster receives output values from the correlator and the following clusters are coupled in series such that each cluster receives output values from the correlator and a preceding cluster and wherein the output values of the correlator and a cluster are processed such that an n-th cluster of the multiple cluster unit, with n>1, accumulates the highest score values of n score values with matching class values.

    APPARATUS AND METHOD FOR CONFIGURABLE MULTI-DWELL SEARCH ENGINE FOR SPREAD SPECTRUM APPLICATIONS
    9.
    发明公开
    APPARATUS AND METHOD FOR CONFIGURABLE MULTI-DWELL SEARCH ENGINE FOR SPREAD SPECTRUM APPLICATIONS 审中-公开
    VORRICHTUNG UND VERFAHRENFÜREINE KONFIGURIERBARE多维尔 - 超新星FÜRSPREIZSPEKTRUMANWENDUNGEN

    公开(公告)号：EP1368905A4

    公开(公告)日：2009-06-24

    申请号：EP01963778

    申请日：2001-07-31

    申请人： INFINEON TECHNOLOGIES AG

    发明人： RIEKEN KEITH

    IPC分类号： H04B1/707 ,  H04B1/7073 ,  H04B1/7077 ,  H04B1/7117 ,  H04W48/16 ,  H04W52/00 ,  H04B1/69

    CPC分类号： H04W48/16 ,  H04B1/70735 ,  H04B1/70775 ,  H04B1/7117

    摘要： This invention provides a configurable multi-dwell search engine (200) for performing automated efficient searches of a known code sequence space. Inputs from a multi-dwell table (202) and a finger control table (204) are multiplexed by a first multiplexer (206). Output from the first multiplexer is used to generate a threshold comparison signal. The generated threshold comparison signal, the current dwell state signal and inputs from a next dwell look-up table (212) are multiplexed by a second multiplexer (210). The second multiplexer outputs a hard hit signal and an offset control signal.

    摘要翻译： 本发明提供了一种用于执行已知代码序列空间的自动高效搜索的可配置多驻留搜索引擎（200）。 来自多重驻留表（202）和手指控制表（204）的输入由第一多路复用器（206）多路复用。 第一个多路复用器的输出用于产生阈值比较信号。 所生成的阈值比较信号，当前驻留状态信号和来自下一个驻留查找表（212）的输入被第二多路复用器（210）多路复用。 第二个多路复用器输出一个硬命中信号和一个偏移控制信号。