By using the correlation property of precoded subcarrier signals, we only need to estimate one subcarrier channel, and channels of other subcarriers can be recovered via simple cross-correlation operations.
借助于编码产生的子载波信号相关性,只需要估计一个子载波信道,就可以通过简单的互相关操作恢复其它子信道。
参考来源 - 多天线系统盲信道估计算法及估计、检测对容量的影响So it can generate enough PN sequence with good correlation property.
由此可以产生数量众多相关特性优良的伪随机序列。
参考来源 - 混沌扩频序列的性能研究After investigating the changes of audio statistics features, auto-correlation property in steganographic soft-ware tools was found when different random message was embed in same audio with same steganographic tool.
基于对同一隐写工具在同一音频载体中嵌入不同加密数据时载体特征量的统计观察,发现隐写工具存在自相关性。
参考来源 - 基于隐写工具的自相关特性进行音频隐写分析·2,447,543篇论文数据，部分数据来源于NoteExpress
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