西安电子科技大学学报（自然科学版）2017，Vol.44Issue(6)：43-47,64,6.DOI:10.3969/j.issn.1001-2400.2017.06.008
Underlay认知下时频重叠信号的分量个数估计
Component number estimation of time-frequency overlapped signals in underlay cognitive radio
摘要
Abstract
This paper proposes a novel method to estimate the number of signal components of time-frequency overlapped signals in low signal to noise ratio environment of the underlay spectrum sharing mode.First,the virtual array signal is constructed by dynamic delay,and then the feature quantity and estimation criterion are constructed by using the characteristic that the noise singular value is not changed very much,and the number of signal components of time-frequency overlapped signals in the underlay spectrum sharing mode is estimated. Simulation results show that the performance of the proposed method is better than that of the existing methods under the conditions of low SNR and high spectrum overlapped rates.关键词
认知无线电/参数估计/时频重叠/频谱共享/个数估计Key words
cognitive radio/parameter estimation/time-frequency overlapped/spectrum sharing/number estimation分类
信息技术与安全科学引用本文复制引用
刘明骞,陈钱,吴芸,王江宏..Underlay认知下时频重叠信号的分量个数估计[J].西安电子科技大学学报（自然科学版）,2017,44(6):43-47,64,6.基金项目
国家自然科学基金资助项目(61501348,61271299) （61501348,61271299）
国家博士后科学基金资助项目(2017M611912) （2017M611912）
陕西省自然科学基础研究计划资助项目(2016JQ6039) （2016JQ6039）
江苏省博士后科研资助项目(1701059B) （1701059B）
高等学校学科创新引智计划资助项目(B08038) （B08038）
