中文摘要：

针对信道的线性和非线性失真，在分析简化的非线性滤波器的基础上，利用判决反馈均衡器的结构特点对其进行扩展，提出了两种新型结构的判决反馈均衡器，并利用NLMS推导出自适应算法。仿真表明，此新型结构能够有效消除码间和非线性干扰，提高误码性能。

英文摘要：

Based on analysis of reduced parameter＇ s nonlinear filter, extended decision feedback equalizer（DFE） with characteristic of DFE＇s structure,proposed two types new structure of decision feedback equalizers, and deduced adaptive algorithm with the steepest method. Computer simulations show that the new type structure equalizer can availably remove nonlinear＇ s disturation and 1S1, and SER＇s performance also gets obviously improvement.