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    Method and apparatus for silent frame detection in a GSM communications system
    6.
    发明授权
    Method and apparatus for silent frame detection in a GSM communications system 有权
    GSM通信系统中静音帧检测的方法和装置

    公开(公告)号：US07245878B2

    公开(公告)日：2007-07-17

    申请号：US10696397

    申请日：2003-10-28

    申请人： Jingdong Lin ,  Yan Zhang ,  Jiayi Zhuang ,  Jian Cheng

    发明人： Jingdong Lin ,  Yan Zhang ,  Jiayi Zhuang ,  Jian Cheng

    IPC分类号： H04B1/00 ,  H04B15/00

    CPC分类号： H04B17/336

    摘要： A method of detecting a silent frame at a mobile station in a GSM transmission is disclosed. The method comprises first receiving a data burst intended for the mobile station. Then, a signal-to-interference-and-noise ratio (SINR) is determined for the data burst. If the SINR is below a predetermined threshold, then the data burst is determined as from a silent frame.

    摘要翻译： 公开了一种在GSM传输中检测移动台上的无声帧的方法。 该方法包括首先接收针对移动台的数据突发。 然后，确定数据脉冲串的信号与干扰噪声比（SINR）。 如果SINR低于预定阈值，则从无声帧确定数据脉冲串。

    Method and apparatus for automatic frequency correction
    7.
    发明申请
    Method and apparatus for automatic frequency correction 有权
    自动频率校正方法和装置

    公开(公告)号：US20060233153A1

    公开(公告)日：2006-10-19

    申请号：US11326043

    申请日：2006-01-05

    申请人： Jian Cheng ,  Jingdong Lin

    发明人： Jian Cheng ,  Jingdong Lin

    IPC分类号： H04J3/06

    CPC分类号： H04L27/2271 ,  H04L2027/0028 ,  H04L2027/0038 ,  H04L2027/0061 ,  H04L2027/0065 ,  H04L2027/0075

    摘要： A technique is provided for automatic frequency offset correction in a wireless communication system. After demodulating and decoding a received signal in a receiver, channel estimation is also performed. The technique further includes re-encoding and re-modulating the decoded and demodulated signal with a coding and modulation scheme different from the received signal. The signal is reconstructed signal on the basis of the re-encoded and re-modulated signal and estimated channel characteristics. A frequency error is estimated based on the reconstructed signal and the original received signal. A threshold for a comparator is determined on the basis of the estimated offset amount determined by the comparison threshold and the estimated frequency offset.

    摘要翻译： 提供了一种用于无线通信系统中的自动频偏校正的技术。 在对接收机中的接收信号进行解调和解码之后，还执行信道估计。 该技术还包括用与接收信号不同的编码和调制方案对解码和解调信号进行重新编码和重新调制。 信号是基于重新编码和重新调制的信号和估计的信道特性的重构信号。 基于重构信号和原始接收信号估计频率误差。 基于由比较阈值和估计频率偏移确定的估计偏移量来确定比较器的阈值。

    Method and apparatus for automatic frequency correction
    8.
    发明授权
    Method and apparatus for automatic frequency correction 有权
    自动频率校正方法和装置

    公开(公告)号：US07725090B2

    公开(公告)日：2010-05-25

    申请号：US11326043

    申请日：2006-01-05

    申请人： Jian Cheng ,  Jingdong Lin

    发明人： Jian Cheng ,  Jingdong Lin

    IPC分类号： H04B1/18

    CPC分类号： H04L27/2271 ,  H04L2027/0028 ,  H04L2027/0038 ,  H04L2027/0061 ,  H04L2027/0065 ,  H04L2027/0075

    摘要： A technique is provided for automatic frequency offset correction in a wireless communication system. After demodulating and decoding a received signal in a receiver, channel estimation is also performed. The technique further includes re-encoding and re-modulating the decoded and demodulated signal with a coding and modulation scheme different from the received signal. The signal is reconstructed signal on the basis of the re-encoded and re-modulated signal and estimated channel characteristics. A frequency error is estimated based on the reconstructed signal and the original received signal. A threshold for a comparator is determined on the basis of the estimated offset amount determined by the comparison threshold and the estimated frequency offset.

    摘要翻译： 提供了一种用于无线通信系统中的自动频偏校正的技术。 在对接收机中的接收信号进行解调和解码之后，还执行信道估计。 该技术还包括用与接收信号不同的编码和调制方案对解码和解调信号进行重新编码和重新调制。 信号是基于重新编码和重新调制的信号和估计的信道特性的重构信号。 基于重构信号和原始接收信号估计频率误差。 基于由比较阈值和估计频率偏移确定的估计偏移量来确定比较器的阈值。

    Method and apparatus for silent frame detection in a GSM communications system
    10.
    发明申请
    Method and apparatus for silent frame detection in a GSM communications system 有权
    GSM通信系统中静音帧检测的方法和装置

    公开(公告)号：US20050090293A1

    公开(公告)日：2005-04-28

    申请号：US10696397

    申请日：2003-10-28

    申请人： Jingdong Lin ,  Yan Zhang ,  Jiayi Zhuang ,  Jian Cheng

    发明人： Jingdong Lin ,  Yan Zhang ,  Jiayi Zhuang ,  Jian Cheng

    IPC分类号： H04B1/38 ,  H04B17/00 ,  H04M1/00

    CPC分类号： H04B17/336

    摘要： A method of detecting a silent frame at a mobile station in a GSM transmission is disclosed. The method comprises first receiving a data burst intended for the mobile station. Then, a signal-to-interference-and-noise ratio (SINR) is determined for the data burst. If the SINR is below a predetermined threshold, then the data burst is determined as from a silent frame.

    摘要翻译： 公开了一种在GSM传输中检测移动台上的无声帧的方法。 该方法包括首先接收针对移动台的数据突发。 然后，确定数据脉冲串的信号与干扰噪声比（SINR）。 如果SINR低于预定阈值，则从无声帧确定数据脉冲串。