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    • 58. 发明授权
    • Method for partitioning resource space, assigning physical channel, and allocating power in OFDMA-based cellular system
    • 在基于OFDMA的蜂窝系统中分配资源空间,分配物理信道和分配功率的方法
    • US07792088B2
    • 2010-09-07
    • US10579892
    • 2004-09-08
    • Jae-Young AhnKwang-Soon Kim
    • Jae-Young AhnKwang-Soon Kim
    • H04B7/208
    • H04L5/023H04L27/2608H04W72/06
    • Disclosed is a method for partitioning resource spaces, and allocating physical channels and power in an OFDMA-based cellular system. A resource within a slot is partitioned into resource spaces in common in a plurality of adjacent cells, and the partitioned resource spaces are partitioned into resource sets according to sizes of physical channels in the adjacent cells. The physical channels classified by predetermined characteristics are respectively assigned to the partitioned resource sets within the resource space. Further, the resource space for transmitting traffic channels between two different cells is partitioned into resource spaces so that the traffic channels in the same subspace may be collided with each other, and a power control is applied between the collided channels to control the interference from the adjacent cells.
    • 公开了一种在基于OFDMA的蜂窝系统中分配资源空间以及分配物理信道和功率的方法。 时隙内的资源在多个相邻小区中共同划分为资源空间,并且根据相邻小区中的物理信道的大小将划分的资源空间划分为资源集。 通过预定特性分类的物理信道分别分配给资源空间内的分区资源集。 此外,用于在两个不同小区之间传输业务信道的资源空间被划分为资源空间,使得相同子空间中的业务信道可能相互冲突,并且在冲突信道之间应用功率控制以控制来自 相邻细胞。
    • 60. 发明授权
    • Method and apparatus for uplink carrier frequency synchronization and antenna weight vector estimation in OFDMA system having smart antenna
    • 具有智能天线的OFDMA系统中的上行链路载波频率同步和天线权重向量估计的方法和装置
    • US07675989B2
    • 2010-03-09
    • US11303484
    • 2005-12-16
    • Jae-Young AhnYong-Soo ChoDong-Han Kim
    • Jae-Young AhnYong-Soo ChoDong-Han Kim
    • H04B7/02
    • H04L27/2657H04B7/0851H04L27/2675
    • An apparatus for estimating an antenna weight vector in an Orthogonal Frequency Division Multiple Access System (OFDMA) having a smart antenna. The apparatus includes receiving and storing training symbols in the time domain transmitted to estimate an antenna weight vector during a training symbol transmission interval; estimating carrier frequency offsets using training symbols in the frequency domain that are obtained by performing a Fast Fourier Transformation (FFT) algorithm with respect to the training symbols received during the training symbol transmission interval; compensating the stored training symbols in the time domain based on the estimated carrier frequency offsets; and estimating an antenna weight vector using training symbols in the frequency domain that are obtained by applying an FFT algorithm with respect to the training symbols in the time domain derived by compensating the carrier frequency offsets during the training symbol transmission interval.
    • 一种用于估计具有智能天线的正交频分多址系统(OFDMA)中的天线权重向量的装置。 所述装置包括在训练符号传输间隔期间在所发送的时域中接收和存储训练符号以估计天线权重向量; 使用通过针对在训练符号传输间隔期间接收到的训练符号执行快速傅里叶变换(FFT)算法获得的频域中的训练符号来估计载波频率偏移; 基于估计的载波频率偏移补偿在时域中存储的训练符号; 以及使用通过在训练符号发送间隔期间通过补偿载波频率偏移导出的时域中的训练符号应用FFT算法获得的频域中的训练符号来估计天线权重向量。