At last, virtual carrier based non-data-aided frequency synchronization algorithm were researched.
再次,研究了基于虚子载波的非数据辅助型载波同步算法。
参考来源 - OFDM系统同步技术研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The second method is based on the virtual sub-carrier subspace blind channel estimation method.
第二种方法是基于虚拟子载波的子空间盲信道估计方法。
But they are very expensive and can't be popularized. So because of it, I design a performance test virtual system of power line carrier communication network.
但是它们都非常的昂贵，不能普及，本文针对此，设计了电力线载波通信网络的网络性能虚拟测试仪。
The virtual grating phase shifting moire fringe is a method to manipulate the static interferogram with carrier fringes.
虚光栅移相莫尔条纹法是一种对静态干涉图的处理方法。
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