Interference cancellation under non-stationary conditions
    1.
    发明公开
    Interference cancellation under non-stationary conditions 审中-公开
    在非静态条件下的干扰消除

    公开(公告)号:KR20120082942A

    公开(公告)日:2012-07-24

    申请号:KR20127014772

    申请日:2009-05-13

    Applicant: QUALCOMM INC

    CPC classification number: H04W56/00 H04B7/02

    Abstract: 무선 시스템에서의 타이밍 및 주파수 동기를 위한 방법이 제공된다. 상기 방법은 심볼의 버스트를 수신하는 단계, 상기 심볼의 버스트의 서브셋을 선택하는 단계, 복수의 타이밍 오프셋에 의해 상기 심볼의 버스트의 서브셋을 반복적으로 조정하는 단계 및 상기 타이밍 오프셋 각각에 대하여, 상기 조정된 서브셋에 대응하는 제 1 성능 메트릭을 계산하는 단계를 포함한다. 또한, 상기 방법은 상기 제 1 성능 메트릭에 기초하여 바람직한 타이밍 오프셋이 되도록 상기 복수의 타이밍 오프셋 중 하나의 타이밍 오프셋을 결정하는 단계, 복수의 주파수 오프셋에 의해 상기 심볼의 버스트의 서브셋을 반복적으로 회전시키는 단계 및 상기 주파수 오프셋 각각에 대하여, 상기 회전된 서브셋에 대응하는 제 2 성능 메트릭을 계산하는 단계, 및 상기 제 2 성능 메트릭에 기초하여 바람직한 주파수 오프셋이 되도록 상기 복수의 주파수 오프셋 중 하나의 주파수 오프셋을 결정하는 단계를 포함한다.

    INTERFERENCE CANCELLATION UNDER NON-STATIONARY CONDITIONS

    公开(公告)号:CA2723730A1

    公开(公告)日:2009-11-19

    申请号:CA2723730

    申请日:2009-05-13

    Applicant: QUALCOMM INC

    Abstract: A method for timing and frequency synchronization in a wireless system is provided. The method comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols, iteratively adjusting the subset of the burst of symbols by a plurality of timing offsets and calculating, for each timing offset, a first performance metric corresponding to the adjusted subset. The method further comprises the steps of determining one of the plurality of timing offsets to be a preferred timing offset based upon the first performance metric thereof, iteratively rotating the subset of the burst of symbols by a plurality of frequency offsets and calculating, for each frequency offset, a second performance metric corresponding to the rotated subset, and determining one of the plurality of frequency offsets to be a preferred frequency offset based upon the second performance metric thereof.

    INTERFERENCE CANCELLATION UNDER NON-STATIONARY CONDITIONS
    3.
    发明申请
    INTERFERENCE CANCELLATION UNDER NON-STATIONARY CONDITIONS 审中-公开
    在非静态条件下的干扰消除

    公开(公告)号:WO2009140338A3

    公开(公告)日:2010-05-06

    申请号:PCT/US2009043718

    申请日:2009-05-13

    CPC classification number: H04W56/00 H04B7/02

    Abstract: A method for timing and frequency synchronization in a wireless system is provided. The method comprises the steps of receiving a burst of symbols, selecting a subset of the burst of symbols, iteratively adjusting the subset of the burst of symbols by a plurality of timing offsets and calculating, for each timing offset, a first performance metric corresponding to the adjusted subset. The method further comprises the steps of determining one of the plurality of timing offsets to be a preferred timing offset based upon the first performance metric thereof, iteratively rotating the subset of the burst of symbols by a plurality of frequency offsets and calculating, for each frequency offset, a second performance metric corresponding to the rotated subset, and determining one of the plurality of frequency offsets to be a preferred frequency offset based upon the second performance metric thereof.

    Abstract translation: 提供了一种用于无线系统中的定时和频率同步的方法。 该方法包括以下步骤:接收符号脉冲串,选择符号脉冲串的子集,通过多个定时偏移迭代地调整符号脉冲串的子集,并且针对每个定时偏移量计算对应于 调整后的子集。 该方法还包括以下步骤:基于其第一性能度量,将多个定时偏移中的一个定时偏移确定为优选的定时偏移,将符号突发的子集迭代地旋转多个频率偏移,并且针对每个频率 偏移量,对应于旋转的子集的第二性能量度,以及基于其第二性能度量,将所述多个频率偏移中的一个确定为优选频率偏移。

    BURSTY INTERFERENCE SUPPRESSION FOR COMMUNICATIONS RECEIVERS
    4.
    发明申请
    BURSTY INTERFERENCE SUPPRESSION FOR COMMUNICATIONS RECEIVERS 审中-公开
    通信接收机的突发干扰抑制

    公开(公告)号:WO2009006078A3

    公开(公告)日:2009-04-30

    申请号:PCT/US2008067930

    申请日:2008-06-23

    Abstract: Techniques are provided for suppressing interference by taking into account the possible bursty nature of co-channel interference in a communication system. In an aspect, interference levels are separately computed for first and second data portions of a desired signal. The computed interference levels may be used to scale the corresponding data portions for subsequent processing.

    Abstract translation: 通过考虑通信系统中同信道干扰的可能突发性质,提供了用于抑制干扰的技术。 在一个方面,分别针对期望信号的第一和第二数据部分计算干扰水平。 所计算的干扰水平可以用于缩放对应的数据部分以用于随后的处理。

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