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    • 16. 发明授权
    • Method of transmitting data frame to multi-user in wireless communication systems
    • 在无线通信系统中向多用户发送数据帧的方法
    • US08675556B2
    • 2014-03-18
    • US13046423
    • 2011-03-11
    • Yu-Ro LeeYun-Joo KimJong-Ee OhMinho CheongSok-Kyu Lee
    • Yu-Ro LeeYun-Joo KimJong-Ee OhMinho CheongSok-Kyu Lee
    • H04W4/00
    • H04W72/005H04W4/08
    • Provided a method for simultaneously transmitting data frames to a plurality of STAs in a multi-user based wireless communication system. The method includes: requesting sounding or feedback for the plurality of STAs by using a first control information frame containing first group information; receiving responses to the sounding or feedback request; reconfiguring the plurality of STAs composing the first group into a plurality of second groups on the basis of the responses such that the sum of maximum transport streams of the respective STAs composing one group becomes equal to or less than the maximum number of streams transmitted by an AP; transmitting a second control information frame containing second group information on the respective second groups to the plurality of STAs composing the first group; and transmitting data frames by using the second group information.
    • 提供了一种用于在基于多用户的无线通信系统中同时向多个STA发送数据帧的方法。 该方法包括:通过使用包含第一组信息的第一控制信息帧来请求对多个STA的探测或反馈; 接收响应声音或反馈请求; 基于所述响应,将构成第一组的多个STA重新配置成多个第二组,使得构成一组的各个STA的最大传输流之和变得等于或小于由一 AP; 将包含关于各个第二组的第二组信息的第二控制信息帧发送到构成第一组的多个STA; 以及通过使用第二组信息发送数据帧。
    • 18. 发明授权
    • Method and apparatus for receiving signal for MIMO system
    • 用于MIMO系统接收信号的方法和装置
    • US08406349B2
    • 2013-03-26
    • 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。
    • 19. 发明授权
    • Transmitter and receiver for giga-bps high-throughput wireless communication system with multiple antennas and multiple bands
    • 用于giga-bps高吞吐量无线通信系统的发射机和接收机,具有多个天线和多个频带
    • US08396102B2
    • 2013-03-12
    • US12808179
    • 2008-11-28
    • Minho CheongYu-Ro LeeJong-Ee OhSok-Kyu Lee
    • Minho CheongYu-Ro LeeJong-Ee OhSok-Kyu Lee
    • H04B1/38
    • H04B1/40
    • Provided is a transmitter and a receiver for a high-throughput wireless communication system. The transmitter includes a baseband transmitter, a DIF transmitter, and a RF transmitter. The baseband transmitter performs a MAC protocol process on transmission signals and reception signals and processes the transmission signals by dividing an entire transmission band into n bands in a physical layer process of the transmission data, where n is a natural number. The DIF transmitter combines transmission signals of each band from the baseband transmitter and outputs m channel signals corresponding to a number of transmission antennas, where m is a natural number. The RF transmitter modulates each of the channel signals transferred from the DIF transmitter and transmits the modulated signals through m antennas.
    • 提供了一种用于高吞吐量无线通信系统的发射机和接收机。 发射机包括基带发射机,DIF发射机和RF发射机。 基带发射机对传输信号和接收信号执行MAC协议处理,并且通过在传输数据的物理层处理中将整个传输频带划分成n个频带来处理传输信号,其中n是自然数。 DIF发射机组合来自基带发射机的每个频带的传输信号,并输出对应于多个发射天线的m个信道信号,其中m是自然数。 RF发射机调制从DIF发射机传送的每个信道信号,并通过m个天线发送调制信号。