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    • 8. 发明授权
    • Apparatus and method for initial fractional frequency offset estimation in a broadband wireless access communication system
    • 宽带无线接入通信系统中初始分数频偏估计的装置和方法
    • US07907682B2
    • 2011-03-15
    • US12030370
    • 2008-02-13
    • In-Chun LimYong-Sun HwangBong-Gee Song
    • In-Chun LimYong-Sun HwangBong-Gee Song
    • H04L27/00
    • H04L27/2676H04L27/266
    • An apparatus and method for initial fractional frequency offset estimation are provided. In an apparatus for estimating an initial fractional frequency offset in a Broadband Wireless Access (BWA) communication system, the apparatus includes a sample power calculator for calculating a power of input sample data and for calculating an average power of a specific symbol, a power threshold comparator for comparing the sample data power in magnitude with the average power of the specific symbol and for outputting one of an accumulation ON and OFF signal, a first buffer for correlating a last data of the sample data with the sample data and for storing sample data corresponding to a preset number of correlation results, a second buffer for storing sample data corresponding to correlation results other than the sample data stored in the first buffer; and an accumulator for allowing accumulation of sample data stored in the second buffer if the power threshold comparator outputs the accumulation ON signal.
    • 提供了一种用于初始分数频偏估计的装置和方法。 在用于估计宽带无线接入(BWA)通信系统中的初始分数频率偏移的装置中,该装置包括用于计算输入采样数据的功率并用于计算特定符号的平均功率的采样功率计算器,功率阈值 比较器,用于将幅度上的采样数据功率与特定符号的平均功率进行比较,并输出累加ON和OFF信号中的一个;第一缓冲器,用于将采样数据的最后数据与采样数据相关联并用于存储采样数据 对应于预设数量的相关结果;第二缓冲器,用于存储对应于除了存储在第一缓冲器中的采样数据之外的相关结果的采样数据; 以及累加器,用于如果功率阈值比较器输出累加ON信号,则允许累积存储在第二缓冲器中的采样数据。