APPARATUS FOR RAPID PN CODE ACQUISITION
    2.
    发明申请
    APPARATUS FOR RAPID PN CODE ACQUISITION 有权
    快速PN代码获取的设备

    公开(公告)号:US20070014336A1

    公开(公告)日:2007-01-18

    申请号:US11533509

    申请日:2006-09-20

    CPC classification number: H04B1/70751 H04B1/70735 H04B1/7077

    Abstract: An apparatus and method of determining a signal code. The method comprising steps of acquiring and correlating a signal with a first code sequence. In response to the timing lock is achieved. Also in response to the signal correlation, an acknowledge from a receiver of the signal to a transmitter change to a second code sequence.

    Abstract translation: 一种确定信号码的装置和方法。 该方法包括以下步骤:获取信号与第一代码序列相关联。 响应时序锁定实现。 同样响应于信号相关性,来自发射机的信号的接收机的确认变为第二码序列。

    Method and system for network synchronization and isolation
    3.
    发明申请
    Method and system for network synchronization and isolation 有权
    网络同步和隔离的方法和系统

    公开(公告)号:US20050198396A1

    公开(公告)日:2005-09-08

    申请号:US10770057

    申请日:2004-02-01

    CPC classification number: H04L67/1095 G06F15/16 H04L12/00 H04L29/00

    Abstract: A network synchronization method designed to provide synchronization of multiple networks and devices. This invention provides a specific method for determining which nodes are responsible for network synchronization as nodes fail or cannot see each other due to conditions on the network. This allows for fault tolerance in a network in which conditions change dynamically. In addition, this invention uses synchronization codes and network numbers to isolate separate networks using the same physical medium, thus allowing sharing of network resources.

    Abstract translation: 一种网络同步方法,旨在提供多个网络和设备的同步。 本发明提供了一种确定哪些节点负责网络同步的具体方法,因为节点由于网络上的条件而失败或不能看到彼此。 这允许在其中条件动态变化的网络中的容错。 此外,本发明使用同步代码和网络号码来隔离使用相同物理介质的单独网络,从而允许共享网络资源。

    Acquisition of a synchronous CDMA TDD QPSK waveform using variable thresholds for PN and burst synchronization
    4.
    发明授权
    Acquisition of a synchronous CDMA TDD QPSK waveform using variable thresholds for PN and burst synchronization 有权
    使用PN和突发同步的可变阈值获取同步CDMA TDD QPSK波形

    公开(公告)号:US07133440B1

    公开(公告)日:2006-11-07

    申请号:US10280167

    申请日:2002-10-25

    CPC classification number: H04B1/707 H04B1/7075 H04B1/7087

    Abstract: A method and system for open-loop acquisition of a pseudo-noise (PN) encoded QPSK burst signal is provided. The method includes the steps of determining a PN correlation accumulation (PNCA) threshold and a sync threshold. Searching for a burst signal synchronization by searching a burst preamble for a sync word exceeding the sync threshold. In response to detecting the sync word, performing a PNCA of at least 256 bits following the detected sync word and comparing the PNCA of the at least 256 bits with the PNCA threshold. The comparison further includes the step of verifying that the PNCA of the 256 bits following the detected sync word exceeds the PNCA threshold and then verifying sync word detection. Next, using the burst preamble an estimate of carrier signal frequency is determined; and using a subsequent burst preamble carrier signal frequency and carrier signal phase is determined.

    Abstract translation: 提供了一种用于开环获取伪噪声(PN)编码的QPSK突发信号的方法和系统。 该方法包括确定PN相关累积(PNCA)阈值和同步阈值的步骤。 通过搜索突发前导码来搜索超过同步阈值的同步字搜索突发信号同步。 响应于检测到同步字,在检测到的同步字之后执行至少256位的PNCA,并将至少256位的PNCA与PNCA阈值进行比较。 比较还包括验证检测到的同步字之后的256位的PNCA超过PNCA阈值,然后验证同步字检测的步骤。 接下来,使用脉冲串前导码确定载波信号频率的估计; 并且确定使用随后的突发前同步码载波信号频率和载波信号相位。

    Apparatus for rapid PN code acquistion
    5.
    发明授权
    Apparatus for rapid PN code acquistion 有权
    快速PN码采集装置

    公开(公告)号:US07126982B1

    公开(公告)日:2006-10-24

    申请号:US09620888

    申请日:2000-07-21

    CPC classification number: H04B1/70751 H04B1/70735 H04B1/7077

    Abstract: An apparatus and method of determining a signal code. The method comprising steps of acquiring and correlating a signal with a first code sequence. In response to the correlation of the signal with a first code sequence a timing lock is achieved. Also in response to the signal correlation, an acknowledgement from a receiver of the signal to a transmitter of the signal is sent where upon the receiver and transmitter change to a second code sequence.

    Abstract translation: 一种确定信号码的装置和方法。 该方法包括以下步骤:获取信号与第一代码序列相关联。 响应于信号与第一代码序列的相关性,实现定时锁定。 同样响应于信号相关,发送信号的接收机对信号的发射机的确认,其中接收机和发射机改变为第二码序列。

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