硅

Channel response in OFDM systems varies with time as to corrupt the orthogonality between subcarriers. This gives rise to intercarrier interference and degrades the performance of signal detection.

由于实际信道的时变性，OFDM系统中每一子载波上的接收信号受到其它子载波上所传输信号的影响，形成载波间干扰并造成误码性能降低。

He drew in only a glass bottle that day.

当时，他就在一个小小的玻璃瓶里作画。