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    DS-CDMA integration spreading coherent receiver
    1.
    发明授权
    DS-CDMA integration spreading coherent receiver 有权
    DS-CDMA集成扩展相干接收机

    公开(公告)号：US07308017B2

    公开(公告)日：2007-12-11

    申请号：US10450883

    申请日：2001-12-18

    申请人： Liangcheng Jiang ,  Xiaohu You ,  Junchao Wang ,  Jinghong Guo ,  Shixin Cheng

    发明人： Liangcheng Jiang ,  Xiaohu You ,  Junchao Wang ,  Jinghong Guo ,  Shixin Cheng

    IPC分类号： H04B1/00

    CPC分类号： H04B1/7095 ,  H04B1/7113 ,  H04B1/712

    摘要： The Spread Spectrum integration coherent receiver of the invention employs a time division multiplexing correlator bank and thus obtained coherent channel evaluator as a core. The receiver can execute initial PN synchronization, RAKE diversity coherent combination, AFC and adjacent cell search and combination receipt, and soft handoff. Further, “part capture in parallel based on slide energy window” and “tracking loop based on energy window barycenter” are introduced into the receiver of the invention, thereby simplifying the structure of the RAKE receiver. The receiver is capable of overcoming multipath fading, ensuring the RAKE receipt performance.

    摘要翻译： 本发明的扩展频谱积分相干接收机采用时分复用相关器组，从而获得相干信道评估器作为核心。 接收机可以执行初始PN同步，RAKE分集相干组合，AFC和相邻小区搜索和组合接收以及软切换。 此外，“本发明的接收机”中引入了“基于载玻片能量窗并行的部分捕获”和“基于能量窗重心的跟踪环路”，从而简化了RAKE接收机的结构。 接收机能够克服多路径衰落，确保RAKE接收性能。

    Frequency auto-correction apparatus for CDMA multipath fading channel
    3.
    发明授权
    Frequency auto-correction apparatus for CDMA multipath fading channel 有权
    用于CDMA多径衰落信道的频率自动校正装置

    公开(公告)号：US07095993B2

    公开(公告)日：2006-08-22

    申请号：US10450324

    申请日：2001-12-12

    申请人： Xiaohu You ,  Yan Zhang ,  Ling Wang ,  Liangcheng Jiang ,  Shixin Cheng

    发明人： Xiaohu You ,  Yan Zhang ,  Ling Wang ,  Liangcheng Jiang ,  Shixin Cheng

    IPC分类号： H04B1/18

    CPC分类号： H04B1/7087 ,  H04B1/7113 ,  H04L2027/0028 ,  H04L2027/0055

    摘要： An automatic frequency correction (AFC) apparatus used for CDMA multipath fading channels comprises a frequency-offset evaluator, an automatic frequency correction loop filter and a carrier frequency adjuster. The present invention provides a “multipath energy window” designing method for the non-determinacy of multipath signals in mobile communication environment. Frequency-offset information can be extracted from the multipath energy window by a simple calculation and evaluated by a maximal SNR weight process. This invention also provides a step-variable accumulation adjusting method and greatly improves the response speed of the AFC apparatus as compared with a conventional loop filter, whereby supplies better AFC required for CDMA mobile terminals.

    摘要翻译： 用于CDMA多径衰落信道的自动频率校正（AFC）装置包括频率偏移评估器，自动频率校正环路滤波器和载波频率调节器。 本发明提供了一种用于移动通信环境中多路径信号的非确定性的“多径能量窗”设计方法。 可以通过简单的计算从多径能量窗口提取频偏信息，并通过最大SNR权重处理进行评估。 本发明还提供了一种步进可变累加调整方法，与传统的环路滤波器相比，大大提高了AFC装置的响应速度，从而为CDMA移动终端提供了更好的AFC。

    Method and equipment for regulating dynamically an average area of a channel estimation
    4.
    发明授权
    Method and equipment for regulating dynamically an average area of a channel estimation 有权
    用于动态调节信道估计的平均面积的方法和设备

    公开(公告)号：US07376176B2

    公开(公告)日：2008-05-20

    申请号：US10488387

    申请日：2002-09-03

    申请人： Chunming Zhao ,  Zhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

    发明人： Chunming Zhao ,  Zhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

    IPC分类号： H04B1/00 ,  H03D1/04

    CPC分类号： H04B1/7117 ,  H04B1/712 ,  H04B7/01 ,  H04L25/0212

    摘要： The present invention relates to a method and an apparatus for adjusting an average interval of channel estimation dynamically based on Doppler-shift. The method comprises the steps of estimating Doppler-shift by using level cross rate (LCR) according to differently moving speeds of mobile terminals, determining the optimal average interval of channel estimation based on the relationship between the existing Doppler-shift and the optimal average interval of channel estimation, dynamically adjusting the average interval of channel estimation according to the determined the optimal average interval of channel estimation to make the coherent receiver obtain the optimal estimation performance at different moving speeds. The apparatus of the present invention comprises a channel estimation module, a valid/strongest finger selection module, a RAKE demodulation and combining module, a RAKE output decision module, an LCR detection and Doppler-shift estimation module, a Gaussian noise power estimation module, a strongest path signal power estimation module, and an optimal average interval calculation module.

    摘要翻译： 本发明涉及一种基于多普勒频移动态地调整信道估计的平均间隔的方法和装置。 该方法包括以下步骤：根据移动终端不同移动速度的等级交叉速率（LCR）估计多普勒频移，基于现有多普勒频移与最佳平均间隔之间的关系确定信道估计的最佳平均间隔 根据确定信道估计的最优平均间隔动态调整信道估计的平均间隔，使相干接收机在不同移动速度下获得最佳估计性能。 本发明的装置包括信道估计模块，有效/最强的手指选择模块，RAKE解调和组合模块，RAKE输出判定模块，LCR检测和多普勒频移估计模块，高斯噪声功率估计模块， 最强路径信号功率估计模块和最优平均间隔计算模块。

    Method and equipment for regulating dynamically an average area of a channel estimation
    5.
    发明申请
    Method and equipment for regulating dynamically an average area of a channel estimation 有权
    用于动态调节信道估计的平均面积的方法和设备

    公开(公告)号：US20050018641A1

    公开(公告)日：2005-01-27

    申请号：US10488387

    申请日：2002-09-03

    申请人： Chunming Zhao ,  Xhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

    发明人： Chunming Zhao ,  Xhangyong Ma ,  Liangcheng Jiang ,  Xiaohu You

    IPC分类号： H04B1/707 ,  H04B7/01 ,  H04L25/02 ,  H04B7/216

    CPC分类号： H04B1/7117 ,  H04B1/712 ,  H04B7/01 ,  H04L25/0212

    摘要： The present invention relates to a method and an apparatus for adjusting an average interval of channel estimation dynamically based on Doppler-shift. The method comprises the steps of estimating Doppler-shift by using level cross rate (LCR) according to differently moving speeds of mobile terminals, determining the optimal average interval of channel estimation based on the relationship between the existing Doppler-shift and the optimal average interval of channel estimation, dynamically adjusting the average interval of channel estimation according to the determined the optimal average interval of channel estimation to make the coherent receiver obtain the optimal estimation performance at different moving speeds. The apparatus of the present invention comprises a channel estimation module, a valid/strongest finger selection module, a RAKE demodulation and combining module, a RAKE output decision module, an LCR detection and Doppler-shift estimation module, a Gaussian noise power estimation module, a strongest path signal power estimation module, and an optimal average interval calculation module.

    摘要翻译： 本发明涉及一种基于多普勒频移动态地调整信道估计的平均间隔的方法和装置。 该方法包括以下步骤：根据移动终端不同移动速度的等级交叉速率（LCR）估计多普勒频移，基于现有多普勒频移与最佳平均间隔之间的关系确定信道估计的最佳平均间隔 根据确定信道估计的最优平均间隔动态调整信道估计的平均间隔，使相干接收机在不同移动速度下获得最佳估计性能。 本发明的装置包括信道估计模块，有效/最强的手指选择模块，RAKE解调和组合模块，RAKE输出判定模块，LCR检测和多普勒频移估计模块，高斯噪声功率估计模块， 最强路径信号功率估计模块和最优平均间隔计算模块。