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36 条记录 (耗时 0.019 秒)

    Method and system for modifying branch metric of Viterbi decoder for uncorrelated signals
    1.
    发明申请
    Method and system for modifying branch metric of Viterbi decoder for uncorrelated signals 审中-公开
    用于修改维特比解码器用于不相关信号的分支度量的方法和系统

    公开(公告)号：US20050141651A1

    公开(公告)日：2005-06-30

    申请号：US10867273

    申请日：2004-06-14

    申请人： Jiayi Zhuang ,  Shengguan Hu ,  Jingdong Lin ,  Datong Chen

    发明人： Jiayi Zhuang ,  Shengguan Hu ,  Jingdong Lin ,  Datong Chen

    IPC分类号： H03D1/00 ,  H04L1/00 ,  H04L25/02 ,  H04L25/06 ,  H04L27/06

    CPC分类号： H04L1/0071 ,  H04L1/0054 ,  H04L25/0202 ,  H04L25/067

    摘要： The present disclosure provides simple methods and systems for generating modified branch metrics for the Viterbi decoder so that the decoder can decode the uncorrelated incoming signals without the influence of either the signal power level or the noise variance. The proposed branch metrics noticeably improve the performance of the Viterbi algorithm in such cases. The present disclosure also provides methods and systems for reducing the length of the demodulated symbols for efficient computation. In an exemplary method, it is shown that the only requirement of the proposed modified branch metric, in addition to the traditional branch metric requirements, is the computation of the noise energy. In another exemplary system, an arrangement of circuit modules offers an implementation of one of the embodiments of the proposed method.

    摘要翻译： 本公开提供了用于生成用于维特比解码器的修改的分支度量的简单方法和系统，使得解码器可以在不受信号功率电平或噪声方差的影响的情况下解码不相关的输入信号。 在这种情况下，所提出的分支度量显着提高了维特比算法的性能。 本公开还提供了用于减少用于有效计算的解调符号的长度的方法和系统。 在示例性方法中，示出了除了传统的分支度量要求之外，所提出的修改的分支度量的唯一要求是噪声能量的计算。 在另一示例性系统中，电路模块的布置提供了所提出的方法的实施例之一的实现。

    Method and apparatus for frequency tracking based on recovered data
    3.
    发明授权
    Method and apparatus for frequency tracking based on recovered data 有权
    基于恢复数据进行频率跟踪的方法和装置

    公开(公告)号：US07251300B2

    公开(公告)日：2007-07-31

    申请号：US10744049

    申请日：2003-12-22

    申请人： Jiayi Zhuang ,  Jingdong Lin ,  Yueheng Sun

    发明人： Jiayi Zhuang ,  Jingdong Lin ,  Yueheng Sun

    IPC分类号： H04L27/06

    CPC分类号： H04L5/06 ,  H04L5/22 ,  H04L5/26 ,  H04L2027/0065

    摘要： A method of frequency tracking based on recovered data, for use in an automatic frequency control subsystem at the receiver of a mobile station, is disclosed. The frequency tracking mechanism derives frequency error information from the recovered data to determine the adjustment needed at the mobile station's local voltage controlled oscillator in order to track the frequency of the base station.

    摘要翻译： 公开了一种基于恢复数据的频率跟踪方法，用于移动台接收机处的自动频率控制子系统。 频率跟踪机制从恢复的数据导出频率误差信息，以确定移动台的局部压控振荡器所需的调整，以便跟踪基站的频率。

    Method and apparatus for silent frame detection in a GSM communications system
    4.
    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 silent frame detection in a GSM communications system
    6.
    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。

    Networking method of single frequency network in TD-SCDMA system
    8.
    发明授权
    Networking method of single frequency network in TD-SCDMA system 有权
    TD-SCDMA系统单频网络组网方法

    公开(公告)号：US08072960B2

    公开(公告)日：2011-12-06

    申请号：US12022984

    申请日：2008-01-30

    申请人： Yanshan Shi ,  Ling Lv ,  Jingdong Lin ,  Datong Chen

    发明人： Yanshan Shi ,  Ling Lv ,  Jingdong Lin ,  Datong Chen

    IPC分类号： H04J3/00

    CPC分类号： H04W72/005 ,  H04W48/10

    摘要： A networking method of single frequency network in a TD-SCDMA system includes the steps of: (1) deciding a networking configuration scheme by a universal mobile telecommunications system terrestrial radio access network (UTRAN), (2) based on the decided networking configuration scheme, configuring an intra-frequency cell info list information element and an inter-frequency cell info list information element in system information and measurement control messages by the UTRAN, (3) transmitting signals over a servicing area by the UTRAN, and (4) receiving the system information and measurement control messages by a user equipment (UE) from the UTRAN, acquiring working mode configuration information of each frequency and each timeslot of a serving cell and neighboring cells, and judging whether there are duplicated cell information elements in the intra-frequency cell info list information element or the inter-frequency cell info list information element.

    摘要翻译： TD-SCDMA系统中单频网络的组网方法包括以下步骤：（1）通过通用移动电信系统陆地无线接入网（UTRAN）决定网络配置方案，（2）基于所确定的网络配置方案 ，在UTRAN的系统信息和测量控制消息中配置频率小区信息列表信息单元和频率间小区信息列表信息单元，（3）由UTRAN通过服务区域发送信号，以及（4）接收 来自UTRAN的用户设备（UE）的系统信息和测量控制消息，获取服务小区和相邻小区的每个频率和每个时隙的工作模式配置信息，并且判断是否存在复制小区信息元素， 频率单元信息列表信息单元或频率间单元信息列表信息单元。