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    • 6. 发明授权
    • Timing acquisition algorithm for an adaptive antenna array
    • 自适应天线阵列的定时采集算法
    • US06711224B1
    • 2004-03-23
    • US09535710
    • 2000-03-27
    • Roger David BenningHongyi Wang
    • Roger David BenningHongyi Wang
    • H04L706
    • H04L7/10H04B7/0854H04L7/042
    • A timing acquisition algorithm for locating the sync timing position of a sync word embedded in a received signal for achieving synchronization between the received signal and a base station, e.g., a base station receiving the received signal, within a wireless telecommunications system. The timing acquisition algorithm is preferably a set of programmable instructions incorporated within a software package and processed by a processor at the within the wireless telecommunications system, such as at the base station. The timing acquisition algorithm gets rid of the unlikely sync timing position for each branch of an adaptive antenna array in the first step; gets rid of the unlikely sync timing position for all branches in the second step; and uses optimal diversity combining for the remaining timing position and uses the conventional correlation or mean-square-error (MSE) approach on the combined data in the third step to finally locate the timing position of the sync word. The first two steps limit the computational load of the third step to a reasonable level. For example, if only two sync timing positions remain after the first two steps, then during the third step, weight calculations need only be performed twice, i.e., one for each sync timing position that still remains.
    • 一种定时获取算法,用于定位嵌入在接收信号中的同步字的同步定时位置,以实现在无线电信系统内的接收信号与基站(例如接收接收信号的基站)之间的同步。 定时获取算法优选地是并入软件包内并由无线电信系统内的处理器(例如在基站处理)处理的一组可编程指令。 在第一步中,定时获取算法消除了自适应天线阵列的每个分支的可能的同步定时位置; 在第二步中摆脱所有分支的不太可能的同步时序位置; 并且对于剩余的定时位置使用最佳分集组合,并且在第三步骤中对组合数据使用传统的相关或均方误差(MSE)方法,以最终定位同步字的定时位置。 前两个步骤将第三步的计算负载限制在合理的水平。 例如,如果在前两个步骤之后仅剩下两个同步定时位置,则在第三步骤期间,仅需执行两次加权计算,即仍然保留的每个同步定时位置中的一个。