中文说明：
自适应滤波器。此脚本显示了在通带为空的静态信道中几种类型均衡器的误码率性能。该脚本构造并实现了一个线性均衡器对象和一个判决反馈均衡器（DFE）对象。它还初始化并调用最大似然序列估计（MLSE）均衡器。MLSE均衡器首先在完全信道知识的情况下被调用，然后使用一种简单但不完美的信道估计技术。
English Description：
Adaptive Filter. This script shows the BER performance of several types of equalizers in a static channel with a null in the passband. The script constructs and implements a linear equalizer object and a decision feedback equalizer (DFE) object. It also initializes and invokes a maximum likelihood sequence estimation (MLSE) equalizer. The MLSE equalizer is first invoked with perfect channel knowledge, then with a straightforward but imperfect channel estimation technique.