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    • 8. 发明授权
    • Methods and apparatus for frame detection
    • 帧检测方法和装置
    • US09172505B1
    • 2015-10-27
    • US13624095
    • 2012-09-21
    • Haiyun YangNinh D. Ngo
    • Haiyun YangNinh D. Ngo
    • H04L1/00H04L25/02
    • H04L1/0091H03M13/333H04L1/0041H04L25/0262
    • One embodiment relates to a frame detection circuit for detecting a frame boundary. The circuit includes at least two frame buffers and a staged-parallel structure of syndrome computation circuits that computes a number of syndromes in one cycle. The two frame buffers are each one word in width. The number of syndromes computed in one cycle by the cascaded series is a fraction of a number of bits in one word. Another embodiment relates to a method for detecting a frame boundary. Another embodiment relates to a method for computing a current syndrome. Other embodiments, aspects, and features are also disclosed.
    • 一个实施例涉及用于检测帧边界的帧检测电路。 该电路包括至少两个帧缓冲器和在一个周期中计算多个综合征的校正子计算电路的分段并行结构。 两个帧缓冲区的宽度各为一个字。 通过级联序列在一个周期中计算的综合征数量是一个字中位数的几分之一。 另一实施例涉及一种用于检测帧边界的方法。 另一实施例涉及一种用于计算当前综合征的方法。 还公开了其它实施例,方面和特征。
    • 10. 发明授权
    • Frame identifier
    • 帧标识符
    • US07324428B1
    • 2008-01-29
    • US10040185
    • 2001-10-19
    • Haiyun Yang
    • Haiyun Yang
    • H04J11/00H04J3/14H04L12/28
    • H04L27/2656H04L5/026H04L27/2613
    • Method and system for determining the number of one or more of a sequence of M+1 consecutive OFDM frames from analysis of the designated preambles of two or more consecutive frames (m=0, 1, . . . , M; M≧1). An overlap function OF(m;k) is formed for each frame with a sequence of selected reference signals indexed by k (k=1, 2, . . . , K), dependent upon the frame number m and the index k, and a phase (sequence location corresponding to largest amplitude of overlap function) is determined. An Mth-order phase difference is computed that corresponds to frame number of one of the M+1 frames. A consistency check is provided for the phase numbers.
    • 用于从两个或更多个连续帧(m = 0,1,...,M; M> = 1)的指定前同步码的分析中确定M + 1个连续OFDM帧序列中的一个或多个序列的数目的方法和系统 )。 根据帧数m和索引k,由k(k = 1,2,...,K)索引的所选择的参考信号序列为每个帧形成重叠函数OF(m; k),并且 确定相位(对应于最大幅度的重叠函数的序列位置)。 计算对应于M + 1帧中的一个帧的帧号的M阶相位差。 对相数进行一致性检查。