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45 条记录 (耗时 0.035 秒)

    Asymmetric Multi-Channel Adaptive Equalizer
    6.
    发明申请
    Asymmetric Multi-Channel Adaptive Equalizer 失效
    非对称多通道自适应均衡器

    公开(公告)号：US20110200091A1

    公开(公告)日：2011-08-18

    申请号：US13020503

    申请日：2011-02-03

    申请人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    发明人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    IPC分类号： H04L27/01

    CPC分类号： H04L25/03057 ,  H04L27/0014 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0053

    摘要： An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for images generated during the modulation and/or demodulation process. The image cancellation module includes a fine carrier correction loop to correct for frequency offsets between the transmitter and receiver. The image cancellation module includes a coarse acquisition mode and a decision directed mode. The decision directed mode allows for a larger signal-to-noise ratio for the receiver when compared against the coarse acquisition mode.

    摘要翻译： 公开了一种用于补偿由通信系统中的发射机，接收机和/或通信信道产生的非线性效应的装置。 通信系统的接收机包含补偿在调制和/或解调过程中产生的图像的图像消除模块。 图像消除模块包括精确的载波校正环路，以校正发射机和接收机之间的频率偏移。 图像消除模块包括粗略采集模式和决策指导模式。 当与粗略采集模式进行比较时，决定导向模式允许接收机具有更大的信噪比。

    Asymmetric multi-channel adaptive equalizer
    7.
    发明申请
    Asymmetric multi-channel adaptive equalizer 失效
    非对称多通道自适应均衡器

    公开(公告)号：US20080187038A1

    公开(公告)日：2008-08-07

    申请号：US11878224

    申请日：2007-07-23

    申请人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    发明人： Bruce J. Currivan ,  Loke Kun Tan ,  Thomas Joseph Kolze ,  Hanli Zou ,  Lin He

    IPC分类号： H04L27/01

    CPC分类号： H04L25/03057 ,  H04L27/0014 ,  H04L2027/003 ,  H04L2027/0038 ,  H04L2027/0053

    摘要： An apparatus is disclosed to compensate for non-linear effects resulting from the transmitter, the receiver, and/or the communication channel in a communication system. A receiver of the communication system contains an image cancellation module that compensates for images generated during the modulation and/or demodulation process. The image cancellation module includes a fine carrier correction loop to correct for frequency offsets between the transmitter and receiver. The image cancellation module includes a coarse acquisition mode and a decision directed mode. The decision directed mode allows for a larger signal-to-noise ratio for the receiver when compared against the coarse acquisition mode.

    摘要翻译： 公开了一种用于补偿由通信系统中的发射机，接收机和/或通信信道产生的非线性效应的装置。 通信系统的接收机包含补偿在调制和/或解调过程中产生的图像的图像消除模块。 图像消除模块包括精确的载波校正环路，以校正发射机和接收机之间的频率偏移。 图像消除模块包括粗略采集模式和决策指导模式。 当与粗略采集模式进行比较时，决定导向模式允许接收机具有更大的信噪比。

    Lock detector for phase locked loops
    9.
    发明授权
    Lock detector for phase locked loops 有权
    用于锁相环的锁定检测器

    公开(公告)号：US06211742B1

    公开(公告)日：2001-04-03

    申请号：US09433811

    申请日：1999-11-03

    申请人： Loke Kun Tan ,  Farzad Etemadi ,  Denny Yuen ,  Shauhyarn Shaun Tsai

    发明人： Loke Kun Tan ,  Farzad Etemadi ,  Denny Yuen ,  Shauhyarn Shaun Tsai

    IPC分类号： H03L7095

    CPC分类号： H03L7/107 ,  H03L7/095 ,  Y10S331/02

    摘要： A detector circuit for determining whether synchronization lock has been optimally achieved in feedback-type control systems. The detector circuit evaluates an error signal developed by a phase/frequency detector and compares the absolute magnitude of the error signal to a first threshold signal corresponding to a magnitude metric. When the value of the error signal is less than the magnitude threshold value, an event signal initiates a time interval counter which continues counting so long as the error signal remains below the magnitude threshold value. The time interval counter continues until it counts to a second threshold value corresponding to a timing metric. At this point, synchronization lock is declared.

    摘要翻译： 用于确定在反馈型控制系统中是否已经最佳地实现同步锁定的检测器电路。 检测器电路评估由相位/频率检测器产生的误差信号，并将误差信号的绝对幅度与对应于幅度度量的第一阈值信号进行比较。 当误差信号的值小于幅度阈值时，只要误差信号保持低于幅度阈值，事件信号启动继续计数的时间间隔计数器。 时间间隔计数器继续，直到其计数到对应于定时度量的第二阈值。 此时，声明了同步锁定。