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    • 5. 发明申请
    • METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEM
    • 无线通信系统干扰消除的方法和装置
    • WO2009137250A4
    • 2010-02-25
    • PCT/US2009040755
    • 2009-04-16
    • MOTOROLA INCSUDARSHAN PALLAVSTEWART KENNETH AZHUANG XIANGYANG
    • SUDARSHAN PALLAVSTEWART KENNETH AZHUANG XIANGYANG
    • H04L25/03
    • H04L25/0204H04L5/0007H04L5/0048H04L25/021H04L25/0228H04L25/0242H04L27/2605H04L27/2647H04W72/085
    • A mobile device estimates a data symbol from a received signal by using one or more interference cancellation algorithms. For one interference cancellation algorithm, the mobile device calculates (302) a Channel State Information (CSI) of an interfering sector and calculates (304) a CSI of a serving sector at a different time. The mobile device then determines (310) a correction factor to the CSI of the interfering sector by, for example, estimating a Doppler speed and a time difference between a first time interval like a preamble symbol and a second time interval like any symbol of interest in the data zone. Using the correction factor, the mobile device updates outdated interference information. The mobile device can cancel interference in the received signal distorted by co-channel interference by using the updated interference information. Also, the mobile device can be configured to combine results of multiple interference cancellation algorithms based on the applicability of the individual interference cancellation algorithms in particular scenarios.
    • 移动设备通过使用一个或多个干扰消除算法从接收信号估计数据符号。 对于一种干扰消除算法,移动设备计算(302)干扰扇区的信道状态信息(CSI),并在不同时间计算(304)服务扇区的CSI。 然后,移动设备通过例如估计诸如前同步码符号的第一时间间隔和像感兴趣的符号之类的第二时间间隔之间的时间差来确定(310)对干扰扇区的CSI的校正因子 在数据区。 使用校正因子,移动设备更新过时的干扰信息。 移动设备可以通过使用更新的干扰信息来消除由同信道干扰失真的接收信号中的干扰。 此外,移动设备可以被配置为基于在特定情况下各个干扰消除算法的适用性来组合多个干扰消除算法的结果。
    • 6. 发明申请
    • METHOD AND APPARATUS FOR INTERFERENCE CANCELLATION IN A WIRELESS COMMUNICATION SYSTEM
    • 用于无线通信系统中的干扰消除的方法和设备
    • WO2009137250A3
    • 2010-01-07
    • PCT/US2009040755
    • 2009-04-16
    • MOTOROLA INCSUDARSHAN PALLAVSTEWART KENNETH AZHUANG XIANGYANG
    • SUDARSHAN PALLAVSTEWART KENNETH AZHUANG XIANGYANG
    • H04L25/03
    • H04L25/0204H04L5/0007H04L5/0048H04L25/021H04L25/0228H04L25/0242H04L27/2605H04L27/2647H04W72/085
    • A mobile device estimates a data symbol from a received signal by using one or more interference cancellation algorithms. For one interference cancellation algorithm, the mobile device calculates (302) a Channel State Information (CSI) of an interfering sector and calculates (304) a CSI of a serving sector at a different time. The mobile device then determines (310) a correction factor to the CSI of the interfering sector by, for example, estimating a Doppler speed and a time difference between a first time interval like a preamble symbol and a second time interval like any symbol of interest in the data zone. Using the correction factor, the mobile device updates outdated interference information. The mobile device can cancel interference in the received signal distorted by co-channel interference by using the updated interference information. Also, the mobile device can be configured to combine results of multiple interference cancellation algorithms based on the applicability of the individual interference cancellation algorithms in particular scenarios.
    • 移动设备通过使用一个或多个干扰消除算法来估计来自接收信号的数据符号。 对于一种干扰消除算法,移动设备计算(302)干扰扇区的信道状态信息(CSI),并计算(304)不同时间的服务扇区的CSI。 然后,移动设备通过例如估计第一时间间隔(如前导符号)和第二时间间隔(如任何感兴趣的符号)之间的多普勒速度和时间差来确定(310)对干扰扇区的CSI的校正因子 在数据区域。 使用校正因子,移动设备更新过时的干扰信息。 通过使用更新的干扰信息,移动设备可以消除由于同信道干扰而失真的接收信号中的干扰。 而且,移动设备可以被配置为基于各个干扰消除算法在特定场景中的适用性来组合多个干扰消除算法的结果。