One advantage to the example of FIG. 4 is that it allows for customizing the length of an equalizer filter.
图4例子的一个优点是,其考虑到了用户化均衡器滤波器的长度。
2
If the length of its cyclic prefix is larger than the delay spread of transmission channel, we can get a simple frequency equalizer to demodulate OFDM signal.