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    • 3. 发明申请
    • METHOD FOR PATH SEARCHING AND VERIFICATION
    • 路径搜索和验证方法
    • WO2005060119A1
    • 2005-06-30
    • PCT/US2004/042494
    • 2004-12-15
    • TELEFONAKTIEBOLAGET LM ERICSSON (publ)KHAYRALLAH, Ali, S.COZZO, CarmelaBOTTOMLEY, Gregory, E.
    • KHAYRALLAH, Ali, S.COZZO, CarmelaBOTTOMLEY, Gregory, E.
    • H04B1/707
    • H04B1/707H04B1/7117H04B2201/709727
    • The present application describes a new path search and verification method and apparatus for identifying and selecting one or more delays for a receiver. A front-end receiver receives a signal having one or more signal images, where each signal image has a corresponding signal delay. A tree generator builds a hierarchical delay tree from a plurality of delay nodes, each corresponding to one of the signal delays. A tree searcher searches through the delay tree to identify one or more surviving delay nodes, where each surviving delay node corresponds to a candidate delay for the receiver. The receiver may also include a state machine comprising a plurality of ordered states for providing candidate delays for the receiver. The state machine stores the candidate delays and shifts the candidate delays between states within the state machine based on the latest results from the tree searcher.
    • 本申请描述了用于识别和选择接收机的一个或多个延迟的新的路径搜索和验证方法和装置。 前端接收器接收具有一个或多个信号图像的信号,其中每个信号图像具有对应的信号延迟。 树生成器从多个延迟节点构建分层延迟树,每个延迟节点对应于一个信号延迟。 树搜索器通过延迟树搜索以识别一个或多个幸存延迟节点,其中每个存活延迟节点对应于接收机的候选延迟。 接收机还可以包括状态机,其包括用于为接收机提供候选延迟的多个有序状态。 状态机根据树搜索器的最新结果存储候选延迟并在状态机内状态之间移动候选延迟。
    • 8. 发明申请
    • METHOD AND APPARATUS FOR FINGER PLACEMENT IN A RAKE RECEIVER
    • RAKE接收器中手指放置的方法和装置
    • WO2005022769A1
    • 2005-03-10
    • PCT/US2004/028501
    • 2004-09-02
    • TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)KHAYRALLAH, Ali, S.COZZO, CarmelaBOTTOMLEY, Gregory, E.
    • KHAYRALLAH, Ali, S.COZZO, CarmelaBOTTOMLEY, Gregory, E.
    • H04B1/707
    • H04B1/7113H04B1/7117
    • A receiver based on a RAKE receiver architecture includes a logic circuit configured to assign one or more RAKE fingers to a finger placement grid that is independent from a searcher delay grid used by the receiver's searcher in generating multipath delay profiles for received signals. The logic circuit may use the multipath delay profile to "tune" the finger placement grid relative to the searcher delay grid but the delay resolution of the finger placement grid is independent of the searcher delay grid. This independence permits, for example, setting the finger placement grid to a delay resolution based on a Nyquist criterion independently from the delay resolution used by the searcher. The receiver may use two or more finger placement grids, may operate in a mixed mode where fingers are assigned on- and off-grid, and may operate selectively in grid or non-grid modes.
    • 基于RAKE接收器架构的接收机包括逻辑电路,其被配置为将一个或多个RAKE指状物分配给手指放置网格,该手指放置网格独立于由接收机的搜索器在为接收的信号生成多径延迟分布时使用的搜索器延迟网格。 逻辑电路可以使用多径延迟分布来相对于搜索器延迟网格“调谐”手指放置网格,但手指放置网格的延迟分辨率与搜索器延迟网格无关。 这种独立性允许例如,将独立于搜索者使用的延迟分辨率的手指放置网格设置为基于奈奎斯特准则的延迟分辨率。 接收器可以使用两个或更多个手指放置网格,可以以手指被分配在离线和离网上的混合模式操作,并且可以以网格或非网格模式选择性地操作。