High data transmission rates and high mobility give rise to time selectivity and frequency selectivity in wireless communication channels.
数据的高速率传输以及终端的高速移动,导致无线通信信道具有时间选择性与频率选择性两个特征。
参考来源 - 基于多项式内插的MIMO时间·2,447,543篇论文数据，部分数据来源于NoteExpress
At the same time, we also have found differences in signal selectivity that may allow us to target some bacteria while ignoring others.
同时，我们还发现了信号选择性的差异，这能够使我们针对一些特定的细菌而不影响到其他。
We cannot say how much of the difference is the result of selectivity of migrants at the time of move and how much results from lowered fertility after moving to the urban setting.
我们无法说这个差距在多大程度上取决于移民时的选择，多大程度上取决于移民城市后生育力的下降。
Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
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