运用误差反馈的判决反馈均衡器的性能分析

判决反馈均衡器（Decision Feedback Equalizer，DFE）能补偿具有严重符号间干扰（Inter Symbol Interference，ISI）的信道，且不存在线性均衡器增强噪声的影响。而在其基础上改进的运用误差反馈的DFE，可利用误差反馈滤波器来减少传统DFE中存在的误差信号的相关性，同时其硬件实现的复杂度没有明显提高。理论分析和仿真表明，这种方法比传统的DFE更有效，特别是针对信道有严重符号间干扰的情况。

Performance Analysis of a Decision Feedback Equalizer Using Error Feedback

The decision feedback equalizer(DFE) can compensate for channels with severe inter symbol interference(ISI) without as much noise enhancement as the linear equalizer(LE).The error feedback DFE which is modified on the basic of the conventional DFE uses a error feedback filter to decrease the relativity of the error that exists in the conventional DFE,so it is more effective than the conventional DFE especially for channels with severe ISI,whereas its hardware complexity does not increase greatly.The theoretical analysis and simulations have confirmed the advantages of the error feedback DFE.