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    • 1. 发明申请
    • POWER ALLOCATION IN A MIMO SYSTEM WITHOUT CHANNEL STATE INFORMATION FEEDBACK
    • 没有通道状态信息反馈的MIMO系统中的功率分配
    • WO2008040227A1
    • 2008-04-10
    • PCT/CN2007/070699
    • 2007-09-14
    • HUAWEI TECHNOLOGIES CO., LTD.LI, YeSOONG, Anthony, C.K.LU, Jianmin
    • LI, YeSOONG, Anthony, C.K.LU, Jianmin
    • H04B7/005
    • H04W52/42H04B7/04H04B7/0669
    • A telecommunication network component, comprising: a memory configured to store instructions, and a processor configured to execute the stored instructions, the instructions comprising: determining a plurality of power allocation adjustments for signals transmitted via an 5 antenna array that promotes decision-feedback detection without using channel state information, and outputting the power allocation adjustments to the array. Also disclosed is a power allocation method comprising: determining a power allocation scheme that promotes decision-feedback detection in a multiple-input and multiple-output system without using channel state information, and implementing the power allocation scheme on an antenna array by modifying an adjustment for 10 each of a plurality of antennas in the array.
    • 一种电信网络组件,包括:被配置为存储指令的存储器和被配置为执行所存储的指令的处理器,所述指令包括:为经由5天线阵列发送的信号确定多个功率分配调整,所述5个天线阵列促进判决反馈检测而没有 使用信道状态信息,并将功率分配调整输出到阵列。 还公开了一种功率分配方法,包括:在不使用信道状态信息的情况下,确定促进多输入和多输出系统中的判决反馈检测的功率分配方案,以及通过修改调整来实现天线阵列上的功率分配方案 对于阵列中的多个天线的10个。
    • 2. 发明申请
    • BEAMFORMING WITH IMPERFECT CHANNEL STATE INFORMATION
    • 使用不正确的通道状态信息进行加工
    • WO2008040228A1
    • 2008-04-10
    • PCT/CN2007/070700
    • 2007-09-14
    • HUAWEI TECHNOLOGIES CO., LTD.LI, YeSOONG, Anthony, C.K.DU, YinggangLU, Jianmin
    • LI, YeSOONG, Anthony, C.K.DU, YinggangLU, Jianmin
    • H04B7/06
    • H04B7/0452H04B7/0439H04B7/0617
    • Disclosed herein is a system and method for downlink beamforming that takes into account imperfect channel state information (CSI) at the transmitter when determining the steering vector used in the beamforming process. The steering vector is calculated to increase the ratio of the 5 average power of a desired signal component to the sum of the interference power of other wireless terminals, referred to as the signal-to-leakage ratio. By accounting for imperfect CSI when calculating the steering vector, the bit-error rate for a given signal-to-noise ratio is decreased. Also disclosed is a power allocation method that improves performance of the system by increasing the signal-to-interference-plus-noise ratio for all of the wireless terminals currently communicating with 10 the base station. The power allocation similarly decreases the bit-error rate for a given signal-to- noise ratio, especially at high signal-to-noise ratios.
    • 这里公开了一种用于下行链路波束成形的系统和方法,其在确定在波束形成处理中使用的导向向量时考虑到发射机处的不完美信道状态信息(CSI)。 计算导向矢量以增加所需信号分量的5个平均功率与其它无线终端的干扰功率之和的比率,称为信号与泄漏比。 通过在计算导向矢量时考虑不完善的CSI,给定信噪比的误码率降低。 还公开了一种功率分配方法,其通过增加当前与基站10通信的所有无线终端的信噪比加噪声比来提高系统的性能。 功率分配类似地降低给定信噪比的比特误码率,特别是在高信噪比下。