Therefore, GBRS have a useful selective effect with respect to the frequency and propagation direction of relic HFGWs.
因此，高斯束谐振系统对高频遗迹引力波的频率和传播方向具有良好的选择效应。
OFDM transforms frequency-selective multipath fading channel into flat channel in the frequency domain and reduce the effect of multipath fading.
OFDM技术通过将频率选择性多径衰落信道在频域内转换为平坦信道，从而减小了多径衰落的影响。
The system can generate two frequencies, which will decrease frequency selective fading effect.
经过调制产生了两个频段的射频信号，具有抗频率选择性衰落的优点。
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