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    • 1. 发明授权
    • Scheduling method and apparatus for control average transmission rate in multiple antenna system
    • 用于控制多天线系统平均传输速率的调度方法和装置
    • US08792373B2
    • 2014-07-29
    • US13196537
    • 2011-08-02
    • Jae-Yun KoSoon-Young YoonCheol MunHee-Jin Jung
    • Jae-Yun KoSoon-Young YoonCheol MunHee-Jin Jung
    • H04W72/12
    • H04W72/1231H04W28/22
    • A scheduling method in a wireless communication includes receiving a Channel Quality Indicator (CQI) from a plurality of terminals. The method also includes determining an average transmission rate of each terminal based on the CQI by approximating an instantaneous transmission rate distribution to a Gaussian distribution. The method further includes determining a weight of each terminal such that the average transmission rate of each terminal satisfies a target transmission rate. The method also includes selecting a terminal set by applying the determined weight. Thus, it is possible to control the fairness between the terminals and to efficiently control the transmission rate of the terminals according to the required transmission rate and the channel environment of the terminals.
    • 无线通信中的调度方法包括从多个终端接收信道质量指示符(CQI)。 该方法还包括通过近似对高斯分布的瞬时传输速率分布来基于CQI来确定每个终端的平均传输速率。 该方法还包括确定每个终端的权重,使得每个终端的平均传输速率满足目标传输速率。 该方法还包括通过应用确定的权重来选择终端机组。 因此,可以控制终端之间的公平性,并且可以根据所需的传输速率和终端的信道环境来有效地控制终端的传输速率。
    • 6. 发明授权
    • Apparatus and method for initial synchronization in wireless communication system based on OFDM
    • 基于OFDM的无线通信系统初始同步装置及方法
    • US08483298B2
    • 2013-07-09
    • US12777503
    • 2010-05-11
    • Jae-Yun KoJae-Hyok LeeSoon-Young Yoon
    • Jae-Yun KoJae-Hyok LeeSoon-Young Yoon
    • H04K1/10H04J11/00
    • H04L27/2657H04L27/2656H04L27/2662H04L27/2675
    • An apparatus and a method for acquiring initial synchronization in a wireless communication system based on Orthogonal Frequency Division Multiplexing (OFDM) are provided. The apparatus includes a frame synchronizer for acquiring frame synchronization using a preamble signal, a first offset determiner for determining a first time offset and a first frequency offset based on the frame synchronization, a preamble identifier estimator for estimating a preamble identifier in a receive signal interpolated with the first time offset and the first frequency offset, and a second offset determiner for generating a first preamble signal and a first pilot signal corresponding to the preamble identifier, for derandomizing a preamble signal and a pilot signal, and for determining a second time offset and a second frequency offset. Thus, the initial synchronization acquisition time in a low Signal-to-Noise Ratio (SNR) environment can be reduced.
    • 提供了一种用于在基于正交频分复用(OFDM)的无线通信系统中获取初始同步的装置和方法。 该装置包括:帧同步器,用于使用前置信号获取帧同步;第一偏移确定器,用于基于帧同步确定第一时间偏移和第一频率偏移;前导标识符估计器,用于估计接收信号内插的前导标识符 以及第二偏移确定器,用于产生对应于前导码标识符的第一前同步码信号和第一导频信号,用于去前同步码前导信号和导频信号,以及用于确定第二时间偏移量 和第二频率偏移。 因此,可以降低在低信噪比(SNR)环境中的初始同步捕获时间。