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    • 76. 发明授权
    • Method and apparatus for recovering estimated velocity of mobile station in communication system
    • 通信系统中移动台估计速度恢复的方法和装置
    • US08737543B2
    • 2014-05-27
    • US12910103
    • 2010-10-22
    • Min-Cheol ParkIn-Hyoung KimTae-Gon Kim
    • Min-Cheol ParkIn-Hyoung KimTae-Gon Kim
    • H03D1/00
    • H04W56/0035
    • A method and apparatus for recovering an estimated velocity of a mobile station in a communication system are provided. The apparatus includes a searcher for determining a Doppler shift value representing the estimated velocity of the mobile station by using a channel impulse response of a preamble signal received at a regular interval of time, a detector for determining a reference Doppler value for compensating the Doppler shift value by using correlation ratios between channel values of symbols to which data for the mobile station are allocated according to subcarriers in a data allocation field of a frame including the preamble signal, and a compensator for determining a compensated Doppler shift value by using the reference Doppler value to compensate the Doppler shift value for a folding value, wherein the folding value represents a difference between the estimated velocity and a true velocity of the mobile station.
    • 提供了一种在通信系统中恢复移动台的估计速度的方法和装置。 该装置包括:搜索器,用于通过使用以规则时间间隔接收的前导码信号的信道脉冲响应来确定表示移动台的估计速度的多普勒频移值;检测器,用于确定用于补偿多普勒频移的参考多普勒值 通过使用根据包括前导码信号的帧的数据分配字段中的子载波来分配移动站的数据的符号的信道值之间的相关比,以及用于通过使用参考多普勒来确定补偿的多普勒频移值的补偿器 值以补偿折叠值的多普勒频移值,其中折叠值表示估计速度与移动台的真实速度之间的差。