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适用于OFDM系统的符号定时盲同步技术

DOI: 10.3969/j.issn.1674-0696.2012.04.41, PP. 910-913

Keywords: 正交频分复用,符号定时,盲同步,非高斯性,峰度,恒定包络调制星座图,orthogonalfrequencydivisionmultiplexing(OFDM),symboltimingoffset,blindsynchronization,non-Gaussianity,kurtosis,constantmodulusconstellation

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Abstract:

:?针对已有算法只适用于恒定包络调制星座图的限制,提出了一种适用于任意星座图映射的OFDM系统的符号定时盲同步方法。通过最大化接收信号的非高斯性,接收机可以将DFT窗口的起始点锁定在安全区域内以完成符号定时同步。利用滑动窗口进一步提高算法精度。仿真结果证明了算法的有效性。

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