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    • 5. 发明授权
    • Delay compensation for transmit/receive chain calibration and multiuser MIMO
    • 发送/接收链校准和多用户MIMO的延迟补偿
    • US08005131B2
    • 2011-08-23
    • US11903488
    • 2007-09-21
    • Qinghua LiJun Shi
    • Qinghua LiJun Shi
    • H04B1/38H04L5/16
    • H04B7/0452H04B7/0421H04B17/373
    • Compensation is provided for errors in channel information that can result when there is a delay between the measurement of the channel information and the subsequent use of the channel information. In one embodiment, downlink channel prediction is performed within a user device, in a system employing closed loop MIMO with implicit feedback, to reduce the occurrence of errors during the calculation of a calibration parameter within an associated base station. In another embodiment, channel prediction is used to predict a downlink channel state for a user device at a future time when a multi-user MIMO data transfer is to occur between a base station and a number of selected user devices.
    • 当频道信息的测量和频道信息的后续使用之间存在延迟时,可提供频道信息的错误补偿。 在一个实施例中,在采用具有隐式反馈的闭环MIMO的系统中,在用户设备内执行下行链路信道预测,以减少在相关联的基站期间计算校准参数期间的错误的发生。 在另一实施例中,当在基站和多个所选择的用户设备之间进行多用户MIMO数据传输时,信道预测用于预测用户设备的下行链路信道状态。
    • 7. 发明申请
    • Delay compensation for transmit/receive chain calibration and multiuser MIMO
    • 发送/接收链校准和多用户MIMO的延迟补偿
    • US20090080504A1
    • 2009-03-26
    • US11903488
    • 2007-09-21
    • Qinghua LiJun Shi
    • Qinghua LiJun Shi
    • H04B1/38
    • H04B7/0452H04B7/0421H04B17/373
    • Compensation is provided for errors in channel information that can result when there is a delay between the measurement of the channel information and the subsequent use of the channel information. In one embodiment, downlink channel prediction is performed within a user device, in a system employing closed loop MIMO with implicit feedback, to reduce the occurrence of errors during the calculation of a calibration parameter within an associated base station. In another embodiment, channel prediction is used to predict a downlink channel state for a user device at a future time when a multi-user MIMO data transfer is to occur between a base station and a number of selected user devices.
    • 当频道信息的测量和频道信息的后续使用之间存在延迟时,可提供频道信息的错误补偿。 在一个实施例中,在采用具有隐式反馈的闭环MIMO的系统中,在用户设备内执行下行链路信道预测,以减少在相关联的基站期间计算校准参数期间的错误的发生。 在另一实施例中,当在基站和多个所选择的用户设备之间进行多用户MIMO数据传输时,信道预测用于预测用户设备的下行链路信道状态。