The ORC equalization has amplificatory effect on the noise, and the controlled equalization needs a threshold determined by the channel fading, these are very difficult to be implemented.

• 均衡有正交性恢复(ORC)均衡、受控均衡(CE)等,但是ORC均衡对噪声有放大效应,而受控均衡需要根据信道的衰落情况来确定其阈值,在实现中比较复杂。