基于稀疏表示的密集多径非相干信号检测方法研究  

Study on dense multipath non-coherent signal detection method based on sparse representation

作　　者：张江波[1] 

机构地区：[1]河北工程大学信息与电气工程学院,河北邯郸056038

出　　处：《微型机与应用》2017年第2期66-69,共4页Microcomputer & Its Applications

摘　　要：为了提高在密集多径信道下信号检测性能,提出了一种基于稀疏表示的非相干检测方法。此方法考虑了稀疏表示的原理及特点,以稀疏信号分解、主成分分析及特征信号提取为基础,通过利用假设检验方法对信号进行最终判决,实现了在密集多径环境下的信号检测。仿真验证了所提方案的可行性,对比了传统方案和所提方案的检测性能,结果表明该方法具有更好的检测能力。In order to improve the signal detection performance in dense multipath channel,in this paper,we propose a non-coherent detection method based on sparse representation. The principle and characteristics of sparse representation are considered,and based on the sparse signal decomposition,the principal component analysis and the characteristic signal extraction,through using the method of hypothesis testing for a final decision,the signal detection is implemented in dense multipath environment. Simulations verify the feasibility of the proposed scheme.Compared with the traditional scheme,the results show that the proposed method has better detection capabilities.

关 键 词：信号检测 稀疏表示 非相干检测 密集多径信道 

分 类 号：TN914[电子电信—通信与信息系统]