摘要
通过分析重叠剪切(OC)法频域均衡(FDE)固有误差的产生原因和分布特点,提出了对其进行改进的方案——自适应重叠剪切(AOC)法;同时设计了一种基于非线性反馈的并行干扰删除(PIC)结构.通过非线性的处理,干扰删除迭代中所反馈的用户信息根据其可信度进行调整.理论分析和仿真结果表明,AOC法FDE复杂度较低,比原OC法FDE性能更好;非线性反馈的PIC进一步提高了接收机的性能.
Firstly, after analyzing the generation and the distribution of the inherent error of overlapcut （OC） method frequency domain equalization （FDE）, the improved version of OC method called adaptive OC （AOC） method was proposed. Secondly, one parallel interference cancellation （PIC） structure based on non-linear feedback was designed. After nonlinear processing, the users＇ feedback information during the PIC iteration was adjusted according to confidence. As a result of both analysis and simulation, AOC method FDE outperforms the original OC method with lower complexity. The non-linear feedback PIC further improves the performance of the receiver.
出处
《北京邮电大学学报》
EI
CAS
CSCD
北大核心
2008年第4期82-85,共4页
Journal of Beijing University of Posts and Telecommunications
关键词
频域均衡
重叠剪切法
并行干扰删除
frequency domain equalization
overlap-cut method
parallel interference cancellation
