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    • 28. 发明授权
    • Synchronisation in a receiver
    • 接收机同步
    • US07616716B2
    • 2009-11-10
    • US11218314
    • 2005-08-31
    • Mark Anthony BeachChristopher Williams
    • Mark Anthony BeachChristopher Williams
    • H04L27/14
    • H04B17/364
    • A radio receiver is suitable for use in an OFDM wireless communications system, in which it is necessary to identify a timing point at a start of a frame. In order to ensure optimum performance of the receiver in multipath environments, it should be synchronised with the first received multipath component, although one or more of the delayed multipath components may be stronger than the first component. A method of determining the time position of the first received multipath component, determines a correlator function from the received signal, and determines the required timing point from a falling edge in a derivative of the correlator function.
    • 无线电接收机适用于OFDM无线通信系统,其中需要识别帧开始处的定时点。 为了确保接收机在多路径环境中的最佳性能,尽管一个或多个延迟多径分量可能比第一个分量更强,但它应该与第一个接收的多径分量同步。 确定第一接收多路径分量的时间位置的方法根据接收信号确定相关器函数,并且从相关器函数的导数中的下降沿确定所需的定时点。