【作者】 杨志； 白文乐； 刘泽民；

【Author】 Yang Zhi~1 Bai Wenle~2 Liu Zemin~1 1.School of Telecommunications Engineering,Beijing University of Posts and Telecommunications,100876 2.College of Information Engineering,North China University of Technology,100041

【机构】 北京邮电大学电信工程学院； 北方工业大学信息工程学院；

【摘要】 FDE-NP 均衡算法是应用于单载波频域均衡系统一种有效的判决反馈均衡算法,但该算法要求循环前缀为已知的训练序列,若循环前缀不为已知时,性能会发生很大下降。本文对 FDE-NP 均衡算法进行了改进,先对循环前缀进行 FDE-NP 均衡判决,利用判决的数据初始化反馈滤波器,再一次进行 FDE-NP 均衡。对改进的算法进行了计算机仿真,结果表明改进后的算法使系统性能具有较为明显的提高。更多还原

【Abstract】 FDE-NP(Frequency Domain Equalization with Noise Predictor)is an effective equalization algorithm applied for single carder frequency domain equalization system.But it is assumed that the symbols in CP ate train symbols,so the performance is decreased when the symbols in CP are not known.Improvement is developed for FDE-NP algorithm in this paper.The symbols in CP are detected by FDE-NP first,and the FDE-NP is performed again with feedback filter initialized by the detected CE The effect of the algorithm is evaluated by computer simulation,and the results show that the system performance is increased by using the improved algorithm.更多还原