计算机工程Issue(6)：61-65,5.DOI:10.3969/j.issn.1000-3428.2015.06.012
一种快速低复杂度宽带频谱压缩感知算法
A Fast and Low Complexity Algorithm of Wideband Spectrum Compressive Sensing
摘要
Abstract
This paper presents a kind of fast and low complexity linear Bregman algorithm and lists the specific implementation steps of the algorithm in order to improve the performance of the wideband spectrum sensing in doubly selective fading environment, which is used for the process of testing wideband compressed spectrum based on cyclic spectrum estimation. This algorithm aims at the flaw of redundant iterative computation in general linear Bregman algorithm. It can accelerate the convergence speed by adding auxiliary variables to estimate iterations of residual staying almost constant in linear Bregman algorithm and updating auxiliary variables to step out the process of redundant iteration. At the same time,it reduces the complexity of the algorithm. As a result,compared with general linear Bregman algorithm,the effect of compressive sampling reconstruction, the detection probability and convergence speed of the modified algorithm are improved in doubly selective fading environment.关键词
认知无线电/宽带频谱感知/压缩采样/线性Bregman算法/双选择性衰落信道/恒虚警率Key words
Cognitive Radio (CR )/wideband spectrum sensing/compressive sampling/linear Bregman algorithm/doubly-selective fading channel/Constant False Alarm Rate(CFAR)分类
信息技术与安全科学引用本文复制引用
任建新,朱翠涛,李中捷,汪汉新..一种快速低复杂度宽带频谱压缩感知算法[J].计算机工程,2015,(6):61-65,5.基金项目
国家自然科学基金资助项目(61103248,61379028) （61103248,61379028）
湖北省自然科学基金资助项目(2013CFB448)。 （2013CFB448）
