公开(公告)号：US20130003807A1

公开(公告)日：2013-01-03

申请号：US13583947

申请日：2010-03-11

申请人： Zhangyong Ma

发明人： Zhangyong Ma

IPC分类号： H04B17/00

CPC分类号： H04L27/0014 ,  H04L25/0212

摘要： A method for supporting wireless communication over a physical channel in a mobile broadband system includes providing an estimate of the channel and obtaining a channel autocorrelation function of a channel impulse response of the channel. The method also includes expressing the channel autocorrelation function as a zero order Bessel function and applying Taylor expansion to the zero order Bessel function. Additionally, the method includes performing derivation of the channel autocorrelation function to obtain an estimate of the maximum Doppler frequency and using the obtained estimate of the maximum Doppler frequency to compensate for a current Doppler effect in a receiver receiving the signals.

摘要翻译： 支持移动宽带系统中的物理信道上的无线通信的方法包括提供信道的估计并获得信道的信道脉冲响应的信道自相关函数。 该方法还包括将信道自相关函数表示为零阶贝塞尔函数，并将泰勒展开应用于零阶贝塞尔函数。 此外，该方法包括执行信道自相关函数的导出以获得最大多普勒频率的估计，并且使用所获得的最大多普勒频率的估计来补偿接收信号的接收机中的当前多普勒效应。

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。