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    • 1. 发明授权
    • Method for transmitting data in multi-user wireless communication system
    • 在多用户无线通信系统中传输数据的方法
    • US09246563B2
    • 2016-01-26
    • US13504925
    • 2010-10-30
    • Yu-Ro LeeJong-Ee OhSok-Kyu Lee
    • Yu-Ro LeeJong-Ee OhSok-Kyu Lee
    • H04W4/00H04B7/04H04L25/02
    • H04B7/0452H04L1/0003H04L1/0009H04L1/0015H04L1/08H04L25/0204
    • The present invention particularly relates to a method and an apparatus for improving the efficiency of data transmission in a multi-user wireless transmission system. According to one embodiment of the present invention, the method, which is a transmission method of data in a multi-user wireless communication system, comprises the steps of: estimating channel states of each terminal through sounding or feedback information received from the terminals, and selecting terminals to which individual data are to be transmitted at the same time; determining a signal to noise ratio of the selected terminals, and calculating a precoding matrix; calculating a modulation and coding scheme (MCS) of each terminal and the number of symbols of data fields in accordance with the MCS of each terminal; dividing an area according to the number of terminals to which the data fields are to be simultaneously transmitted, if there are two or more selected terminals; and recalculating a reception signal to interference and noise ratio (SINR) for each area of each terminal, configuring a packet by resetting the MCS according to the recalculated SINR, and transmitting the configured packet.
    • 本发明特别涉及一种用于提高多用户无线传输系统中的数据传输效率的方法和装置。 根据本发明的一个实施例,作为多用户无线通信系统中的数据的传输方法的方法包括以下步骤:通过从终端接收的探测或反馈信息来估计每个终端的信道状态,以及 选择要同时发送单个数据的终端; 确定所选终端的信噪比,并计算预编码矩阵; 根据每个终端的MCS计算每个终端的调制和编码方案(MCS)和数据字段的符号数; 如果存在两个或更多个所选择的终端,则根据要同时发送数据字段的终端数量划分一个区域; 并重新计算每个终端的每个区域的接收信号与干扰和噪声比(SINR),通过根据重新计算的SINR重新设置MCS来配置分组,并发送配置的分组。
    • 9. 发明申请
    • METHOD AND APPARATUS FOR RECEIVING SIGNAL FOR MIMO SYSTEM
    • 用于MIMO系统接收信号的方法和装置
    • US20100266072A1
    • 2010-10-21
    • US12808726
    • 2008-06-05
    • Yuro LeeJong-Ee OhMinho CheongSok-Kyu Lee
    • Yuro LeeJong-Ee OhMinho CheongSok-Kyu Lee
    • H04L27/06
    • H04L25/03318H04L25/0242H04L25/03305H04L2025/03414H04L2025/03426H04L2025/03624
    • Provided is a method and apparatus for receiving a signal for a MIMO system. The receiving apparatus includes: a QR decomposer for calculating a unitary matrix Q, an upper triangle matrix R, and a vector size for a received signal; a multiple dimension detector for calculating a first LLR for an output of the QR decomposer through multiple dimension detection; an inverse matrix and weight calculator for calculating an inverse matrix for the upper triangle matrix R and a weight; an interference remover for regenerating a symbol for a demodulated data stream using the fist LLR and removing interference from an output vector of the QR decomposer using the regenerated symbol; and a weight zero forcing unit for performing zero forcing on the interference removed output vector from the interference remover using the inverse matrix of the upper triangle matrix R and the weight and calculating a second LLR.
    • 提供了一种用于接收MIMO系统的信号的方法和装置。 接收装置包括:QR分解器,用于计算酉矩阵Q,上三角矩阵R和接收信号的向量大小; 多维度检测器,用于通过多维度检测计算QR分解器的输出的第一LLR; 用于计算上三角矩阵R和权重的逆矩阵的逆矩阵和权重计算器; 干扰去除器,用于使用第一LLR再生用于解调数据流的符号,并使用再生符号去除来自QR分解器的输出向量的干扰; 以及加权零强制单元,用于使用上三角矩阵R和权重的逆矩阵和权重对来自干扰去除器的干扰去除输出向量执行零强制并计算第二LLR。