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    Method for allocating subchannels in an OFDMA mobile communication system
    3.
    发明授权
    Method for allocating subchannels in an OFDMA mobile communication system 有权
    在OFDMA移动通信系统中分配子信道的方法

    公开(公告)号：US07411924B2

    公开(公告)日：2008-08-12

    申请号：US10996699

    申请日：2004-11-24

    申请人： Yoon-Ok Cho ,  Yong-Hoon Lee ,  Young-Ho Jung ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Chang-Soo Hwang ,  Seung-Hoon Nam

    发明人： Yoon-Ok Cho ,  Yong-Hoon Lee ,  Young-Ho Jung ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Chang-Soo Hwang ,  Seung-Hoon Nam

    IPC分类号： H04Q7/24

    CPC分类号： H04L5/023 ,  H04L1/0003 ,  H04L1/0015 ,  H04L27/2608

    摘要： An adaptive modulation scheme relating to an RA problem for maximizing the transmission rates of all users for maximum transmission rates in an OFDMA system including some users requiring to use services at fixed data rates. The scheme proposes introduction of an adaptive modulation using linear programming into an existing scheme for a system including a single kind of users, thereby enabling simultaneous execution of the adaptive modulation for all users in a system including two kinds of users. Further, the invention proposes another scheme of sequentially allocating subchannels to the users when the fixed transmission rate has a sufficiently small value, in order to reduce the complexity.

    摘要翻译： 一种与RA问题有关的自适应调制方案，用于在包括一些需要以固定数据速率的业务的用户的OFDMA系统中最大化所有用户的最大传输速率的传输速率。 该方案提出了使用线性规划的自适应调制引入到包括单一用户的系统的现有方案中，从而能够在包括两种用户的系统中为所有用户同时执行自适应调制。 此外，为了降低复杂度，本发明提出了当固定传输速率具有足够小的值时向用户顺序分配子信道的另一方案。

    ICI cancellation method for an OFDM system
    4.
    发明授权
    ICI cancellation method for an OFDM system 有权
    OFDM系统的ICI消除方法

    公开(公告)号：US07433419B2

    公开(公告)日：2008-10-07

    申请号：US10973372

    申请日：2004-10-26

    申请人： Jae-Yeun Yun ,  Yong-Hoon Lee ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Ho-Jin Kim ,  Chan-Soo Hwang ,  Seung-Hoon Nam

    发明人： Jae-Yeun Yun ,  Yong-Hoon Lee ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Ho-Jin Kim ,  Chan-Soo Hwang ,  Seung-Hoon Nam

    IPC分类号： H04K1/02 ,  H04L25/03 ,  H04L25/49 ,  H03K9/00 ,  H04L27/00

    CPC分类号： H04L27/2647 ,  H04L25/0228

    摘要： In the ICI cancellation method for OFDM communication system, a receiver performs channel estimation using pilot subcarriers included in transmission signals transmitted from at least one transmitter. The transmitter generates the transmission signal in which pilot subcarriers and data subcarriers are regularly arranged, performs preceding on the transmission signal, modulates the pre-coded transmission signal into an OFDM symbol, and transmits the OFDM symbol. The receiver receives the OFDM symbol; demodulates the OFDM symbol, detects the pilot subcarriers from a demodulated signal, estimates channels using the pilot subcarriers, and restores the transmission signal using the estimated channels.

    摘要翻译： 在OFDM通信系统的ICI取消方法中，接收机使用从至少一个发射机发送的发送信号中包含的导频子载波来执行信道估计。 发射机产生导频子载波和数据子载波规则排列的传输信号，在传输信号之前执行，将预编码的传输信号调制为OFDM符号，并发送OFDM符号。 接收机接收OFDM符号; 解调OFDM符号，从解调信号中检测导频子载波，使用导频子载波估计信道，并使用所估计的信道来恢复发送信号。

    ICI cancellation method for an OFDM system
    5.
    发明申请
    ICI cancellation method for an OFDM system 有权
    OFDM系统的ICI消除方法

    公开(公告)号：US20050147176A1

    公开(公告)日：2005-07-07

    申请号：US10973372

    申请日：2004-10-26

    申请人： Jae-Yeun Yun ,  Yong-Hoon Lee ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Ho-Jin Kim ,  Chan-Soo Hwang ,  Seung-Hoon Nam

    发明人： Jae-Yeun Yun ,  Yong-Hoon Lee ,  Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Ho-Jin Kim ,  Chan-Soo Hwang ,  Seung-Hoon Nam

    IPC分类号： H04K1/10 ,  H04L25/02 ,  H04L27/26

    CPC分类号： H04L27/2647 ,  H04L25/0228

    摘要： In the ICI cancellation method for OFDM communication system, a receiver performs channel estimation using pilot subcarriers included in transmission signals transmitted from at least one transmitter. The transmitter generates the transmission signal in which pilot subcarriers and data subcarriers are regularly arranged, performs preceding on the transmission signal, modulates the pre-coded transmission signal into an OFDM symbol, and transmits the OFDM symbol. The receiver receives the OFDM symbol; demodulates the OFDM symbol, detects the pilot subcarriers from a demodulated signal, estimates channels using the pilot subcarriers, and restores the transmission signal using the estimated channels.

    摘要翻译： 在OFDM通信系统的ICI取消方法中，接收机使用从至少一个发射机发送的发送信号中包含的导频子载波来执行信道估计。 发射机产生导频子载波和数据子载波规则排列的传输信号，在传输信号之前执行，将预编码的传输信号调制为OFDM符号，并发送OFDM符号。 接收机接收OFDM符号; 解调OFDM符号，从解调信号中检测导频子载波，使用导频子载波估计信道，并使用所估计的信道来恢复发送信号。

    Method for grouping transmission antennas in mobile communication system including multiple transmission/reception antennas
    7.
    发明申请
    Method for grouping transmission antennas in mobile communication system including multiple transmission/reception antennas 有权
    在包括多个发送/接收天线的移动通信系统中对发送天线进行分组的方法

    公开(公告)号：US20050128983A1

    公开(公告)日：2005-06-16

    申请号：US10988947

    申请日：2004-11-15

    申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Ho-Jin Kim ,  Joo-Hwan Chun ,  Kyung-Chun Lee ,  Il-Han Kim

    发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Ho-Jin Kim ,  Joo-Hwan Chun ,  Kyung-Chun Lee ,  Il-Han Kim

    IPC分类号： H04B7/02 ,  H04B7/06 ,  H04B7/08 ,  H04Q7/00

    CPC分类号： H04B7/0874 ,  H04B7/0691

    摘要： Disclosed is a method for configuring transmission antenna groups in a mobile communication system with multiple transmission antennas and multiple reception antennas. The method includes the steps of: receiving a first matrix having a size of ‘Nt×Nt’, which corresponds to Nt number of transmission antennas, fedback from the mobile terminal, generating combinations of sub-matrixes of the first matrix corresponding to Nr number of reception antennas, and calculating sums of maximum eigenvalues; determining combinations of the sub-matrixes having a maximum value from among the calculated sums of eigenvalues to be transmission antenna groups for the Nt number of transmission antennas; and transmitting different relevant symbols from each other through the transmission antenna groups.

    摘要翻译： 公开了一种在具有多个发送天线和多个接收天线的移动通信系统中配置发送天线组的方法。 该方法包括以下步骤：接收一个大小为N N T N T N T N T N T N T N T N T N T N T N T N 发送天线，从移动终端反馈，生成与第N个接收天线数相对应的第一矩阵的子矩阵的组合，以及计算最大特征值的和; 确定具有最大值的子矩阵的组合，其中所计算的特征值之和成为发送天线的N T个数量的发送天线组; 并通过发射天线组彼此发送不同的相关符号。

    Method for grouping transmission antennas in mobile communication system including multiple transmission/reception antennas
    8.
    发明授权
    Method for grouping transmission antennas in mobile communication system including multiple transmission/reception antennas 有权
    在包括多个发送/接收天线的移动通信系统中对发送天线进行分组的方法

    公开(公告)号：US07483719B2

    公开(公告)日：2009-01-27

    申请号：US10988947

    申请日：2004-11-15

    申请人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Ho-Jin Kim ,  Joo-Hwan Chun ,  Kyung-Chun Lee ,  Il-Han Kim

    发明人： Eung-Sun Kim ,  Jong-Hyeuk Lee ,  Jae-Hak Chung ,  Ho-Jin Kim ,  Joo-Hwan Chun ,  Kyung-Chun Lee ,  Il-Han Kim

    IPC分类号： H04M1/00

    CPC分类号： H04B7/0874 ,  H04B7/0691

    摘要： Disclosed is a method for configuring transmission antenna groups in a mobile communication system with multiple transmission antennas and multiple reception antennas. The method includes the steps of: receiving a first matrix having a size of ‘Nt×Nt’, which corresponds to Nt number of transmission antennas, fedback from the mobile terminal, generating combinations of sub-matrixes of the first matrix corresponding to Nr number of reception antennas, and calculating sums of maximum eigenvalues; determining combinations of the sub-matrixes having a maximum value from among the calculated sums of eigenvalues to be transmission antenna groups for the Nt number of transmission antennas; and transmitting different relevant symbols from each other through the transmission antenna groups.

    摘要翻译： 公开了一种在具有多个发送天线和多个接收天线的移动通信系统中配置发送天线组的方法。 该方法包括以下步骤：从移动终端接收具有大小为NtxNt的第一矩阵，其对应于Nt个发送天线，产生与Nr个接收数相对应的第一矩阵的子矩阵的组合 天线，并计算最大特征值的和; 确定具有最大值的子矩阵的组合，其中所计算的特征值之和作为N t个发射天线的发射天线组; 并通过发射天线组彼此发送不同的相关符号。