描述了QPSK的判决反馈均衡，用matlab实现了QPSK的实现，实现了DFE- Describes a QPSK decision feedback equalization using matlab realize the QPSK implementation to achieve the DFE

在无线通信中，存在着严重的多径现象，能够引起严重的ISI。本程序采用判决反馈均衡器（DFE）RLS 算法(In wireless communications, there is a serious multipath phenomenon that can cause serious ISI. This procedure uses the decision feedback equalizer (DFE) RLS algorithm)