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    Channel estimation apparatus and method in digital communication system
    7.
    发明授权
    Channel estimation apparatus and method in digital communication system 有权
    数字通信系统中的信道估计装置及方法

    公开(公告)号：US07359431B2

    公开(公告)日：2008-04-15

    申请号：US10621447

    申请日：2003-07-18

    申请人： Yong-sik Kwon ,  Jin-hee Jeong ,  Jung-jin Kim

    发明人： Yong-sik Kwon ,  Jin-hee Jeong ,  Jung-jin Kim

    IPC分类号： H04B1/00

    CPC分类号： H04L25/0204 ,  H04L25/0226

    摘要： A channel estimation apparatus in a digital communication system includes: a correlation unit for obtaining a correlation function of a first received signal by correlating a received synchronizing signal and a reference synchronizing signal, and obtaining a correlation function of the received synchronizing signal by a correlation between the synchronizing signals, a first estimating unit for estimating a first multi-path by applying a first threshold value to the correlation function of the first received signal, a correlation noise removing unit for obtaining a correlation function of a second received signal by removing correlation noise included in the correlation function of the first received signal, by a first multi-path, and a second estimating unit for estimating a second multi-path by applying a second threshold value to a correlation function of the second received signal in which the correlation noise has been removed.

    摘要翻译： 数字通信系统中的信道估计装置包括：相关单元，用于通过使接收到的同步信号和参考同步信号相关来获得第一接收信号的相关函数，并且通过相关性获得所接收的同步信号的相关函数 所述同步信号，第一估计单元，用于通过对所述第一接收信号的相关函数应用第一阈值来估计第一多路径;相关噪声去除单元，用于通过去除相关噪声来获得第二接收信号的相关函数 包括在第一接收信号的相关函数中的第一多路径，以及第二估计单元，用于通过对第二接收信号的相关函数应用第二阈值来估计第二多路径，其中相关噪声 已被删除。

    Digital communication system and method for operating the system which can improve equalization performance according to channel state
    8.
    发明授权
    Digital communication system and method for operating the system which can improve equalization performance according to channel state 有权
    用于操作系统的数字通信系统和方法，其可以根据信道状态提高均衡性能

    公开(公告)号：US07349502B2

    公开(公告)日：2008-03-25

    申请号：US10626706

    申请日：2003-07-25

    申请人： Jung-jin Kim ,  Yong-sik Kwon ,  Jin-hee Jeong

    发明人： Jung-jin Kim ,  Yong-sik Kwon ,  Jin-hee Jeong

    IPC分类号： H03D1/04 ,  H03D1/24 ,  H04N5/44

    CPC分类号： H04L25/021 ,  H04L25/03006 ,  H04L2025/03382

    摘要： A digital communication system having an improved equalization performance according to a channel state and a method for operating the system are disclosed. The digital communication system includes: a channel state judging section; and an equalizing section for compensating for a channel distortion of the inputted signal by initializing a parameter on the basis of the judged channel state. The channel state judging section includes: a channel prediction section for predicting the channel state of the inputted signal by using the field sync; an N number of buffers for storing the state information regarding the N number of channels predicted by means of the N number of the field syncs; a calculating section for calculating a difference between the state information regarding the N number of channels stored in the N number of buffers; and a judging section for judging the channel state on the basis of the calculated difference.

    摘要翻译： 公开了一种具有根据信道状态的改进的均衡性能和用于操作该系统的方法的数字通信系统。 数字通信系统包括：信道状态判断部分; 以及均衡部分，用于通过基于所判断的信道状态初始化参数来补偿输入信号的信道失真。 信道状态判断部分包括：信道预测部分，用于通过使用场同步来预测输入信号的信道状态; N个缓冲器，用于存储关于通过N个场同步预测的N个信道数的状态信息; 计算部分，用于计算存储在N个缓冲器中的N个信道的状态信息之间的差异; 以及判断部分，用于基于所计算出的差分来判断信道状态。

    Equalizing method and apparatus for single carrier system having an improved equalization performance
    9.
    发明授权
    Equalizing method and apparatus for single carrier system having an improved equalization performance 有权
    具有改进的均衡性能的单载波系统的均衡方法和装置

    公开(公告)号：US07260146B2

    公开(公告)日：2007-08-21

    申请号：US10620413

    申请日：2003-07-17

    申请人： Yong-sik Kwon ,  Jin-hee Jeong ,  Jung-jin Kim

    发明人： Yong-sik Kwon ,  Jin-hee Jeong ,  Jung-jin Kim

    IPC分类号： H03H7/40

    CPC分类号： H04L25/03057 ,  H04B1/1081 ,  H04L2025/03375 ,  H04L2025/0349 ,  H04L2025/03617

    摘要： Equalizing method and apparatus for single carrier system having an improved equalization performance is disclosed, which includes: a section setting unit for setting filter taps having a predetermined section corresponding to the predicted multi-path; a repeat setting unit for setting filter taps of a repetition section by making the set predetermined section repetitive periodically; and a filter unit for filtering the multi-path by updating the coefficients of the filter taps of the set repetition section. The repeat setting unit sets the filter taps of the repetition section corresponding to an operation characteristic of the filter unit. Accordingly, the apparatus can improve equalization performance by setting filter taps corresponding to the predicted multi-path and updating only the set coefficients of the filter taps. Further, the apparatus can improve equalization performance in dynamic channel circumstances in which the multi-path changes.

    摘要翻译： 公开了一种具有改善的均衡性能的单载波系统的均衡方法和装置，其包括：用于设置具有对应于预测多径的预定部分的滤波器抽头的部分设置单元; 重复设置单元，用于通过使所设置的预定部分周期性地重复来设置重复部分的滤波器抽头; 以及滤波器单元，用于通过更新设置的重复部分的滤波器抽头的系数来对多路径进行滤波。 重复设置单元设置与过滤器单元的操作特性对应的重复部分的过滤抽头。 因此，该设备可以通过设置对应于预测多路径的滤波器抽头并且仅更新滤波器抽头的集合系数来提高均衡性能。 此外，该装置可以改善多路径改变的动态信道环境中的均衡性能。