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58 条记录 (耗时 0.034 秒)

    Beam and power allocation method for MIMO communication system
    12.
    发明授权
    Beam and power allocation method for MIMO communication system 有权
    MIMO通信系统的波束和功率分配方法

    公开(公告)号：US07587172B2

    公开(公告)日：2009-09-08

    申请号：US11368726

    申请日：2006-03-06

    申请人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Jianjun Li

    发明人： Ho-Jin Kim ,  Sung-Jin Kim ,  Kwang-Bok Lee ,  Jianjun Li

    IPC分类号： H04B1/00 ,  H04B15/00

    CPC分类号： H04B7/0452 ,  H04B7/0465 ,  H04B7/061 ,  H04B7/0634 ,  H04B7/0639 ,  H04L1/0003 ,  H04L1/0675

    摘要： The present invention provides the multiuser Multiple-Input Multiple-Output (MIMO) systems with a feedback method which includes measuring, at the terminal, received Signal to Noise Ratios (SNRs) for all transmit antennas, selecting one of precoding matrixes, which has best SNRs, retrieving an index mapped to the selected preceding matrix from a predetermined mapping table, and transmitting the index with the SNRs of the selected precoding matrix. In the present invention, it is possible to reduce feedback information amount without degradation of the sum rate performance of the system since the feedback information is transmitted in a form of index implying appropriate precoding matrix and corresponding SNRs.

    摘要翻译： 本发明提供了具有反馈方法的多用户多输入多输出（MIMO）系统，其包括在终端处测量所有发射天线的接收信噪比（SNR），选择最佳的预编码矩阵之一 SNR，从预定的映射表检索映射到所选择的先前矩阵的索引，以及使用所选择的预编码矩阵的SNR发送索引。 在本发明中，由于反馈信息以表示适当的预编码矩阵和对应的SNR的索引形式发送，所以可以减少反馈信息量而不降低系统的总和速率性能。

    Apparatus and method for selecting effective channel in a multi-user MIMO system
    13.
    发明申请
    Apparatus and method for selecting effective channel in a multi-user MIMO system 有权
    在多用户MIMO系统中选择有效信道的装置和方法

    公开(公告)号：US20070253508A1

    公开(公告)日：2007-11-01

    申请号：US11785743

    申请日：2007-04-19

    申请人： Yong-Xing Zhou ,  Sung-Jin Kim ,  JianJun Li ,  Ho-Jin Kim

    发明人： Yong-Xing Zhou ,  Sung-Jin Kim ,  JianJun Li ,  Ho-Jin Kim

    IPC分类号： H04L1/02

    CPC分类号： H04B7/0626 ,  H04L1/0026

    摘要： An apparatus and method for selecting an effective channel in a multi-user MIMO system are provided, in which a receiver receives pilot signals from a transmitter, determines channel information indicating an antenna offering the best quality among a plurality of antennas using the pilot signals, and generates feedback information with the channel information, and the transmitter receives feedback information from a plurality of receivers, generates a channel matrix using the feedback information, and transmits data simultaneously to the plurality of receivers using the channel matrix.

    摘要翻译： 提供了一种用于在多用户MIMO系统中选择有效信道的装置和方法，其中接收机从发射机接收导频信号，使用导频信号确定指示在多个天线中提供最佳质量的天线的信道信息， 并且生成具有信道信息的反馈信息，并且发送器从多个接收器接收反馈信息，使用反馈信息生成信道矩阵，并且使用信道矩阵同时向多个接收机发送数据。

    Method for grouping transmission antennas in mobile communication system including multiple transmission/reception antennas
    15.
    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。

    Method for grouping transmission antennas in mobile communication system including multiple transmission/reception antennas
    16.
    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。

    Apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system
    20.
    发明授权
    Apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system 有权
    用于在闭环多天线系统中发送/接收数据的装置和方法

    公开(公告)号：US08098746B2

    公开(公告)日：2012-01-17

    申请号：US11763019

    申请日：2007-06-14

    申请人： Sung-Jin Kim ,  Ho-Jin Kim

    发明人： Sung-Jin Kim ,  Ho-Jin Kim

    IPC分类号： H04L27/28

    CPC分类号： H04L1/0026 ,  H04B7/0417 ,  H04B7/043 ,  H04B7/0632 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/06 ,  H04L25/0204

    摘要： An apparatus and method for transmitting/receiving data in a closed-loop multi-antenna system. A receiver receives a plurality of data streams from a plurality of transmit antennas of a transmitter, generates Channel Quality Information (CQIs) of channels that carry data streams transmitted from at least two transmit antenna allocated to the receiver among the plurality of transmit antennas, and transmits the CQIs to the transmitter. For the CQI generation, the receiver generates a channel matrix through channel estimation of the received data streams, generates a reception beamforming matrix from the channel matrix including only components of the data streams transmitted from the allocated transmit antennas, and calculates the CQIs using the channel matrix, the reception beamforming matrix, and a total signal-to-noise ratio (SNR) obtained through the channel estimation.

    摘要翻译： 一种用于在闭环多天线系统中发送/接收数据的装置和方法。 接收机从发射机的多个发射天线接收多个数据流，产生载波从多个发射天线中分配给接收机的至少两个发射天线发射的数据流的信道的信道质量信息（CQI），以及 将CQI发送到发送机。 对于CQI生成，接收器通过对接收到的数据流的信道估计来生成信道矩阵，从仅包含从所分配的发送天线发送的数据流的分量的信道矩阵生成接收波束成形矩阵，并使用信道 矩阵，接收波束形成矩阵以及通过信道估计获得的总信噪比（SNR）。