计算机技术与发展Issue(6)：118-121,126,5.DOI:10.3969/j.issn.1673-629X.2014.06.030
一种改进的基于BOMP的宽带频谱感知算法
A Modified Spectrum Sensing Algorithm for Wideband Cognitive Radio Based on BOMP
摘要
Abstract
Block-sparse signal is a typical sparse signal. To deal with the compressed sensing problem of block-sparse signal,most of the existing theories assume that the boundary conditions of non-zero signals are known. However,this priori information is often limited to secondary users. In this paper,try to solve the reconstruction problem of imperfect block sparse signals without the boundary conditions of the non-zero signals. A modified spectrum sensing algorithm for wideband cognitive radio based on block-sparse orthogonal matching pursuit is proposed,which combines traditional single-point reconstruction algorithm and block sparse reconstruction algorithm together. To judge the integrity of the block,energy detection is used in reconstructing,not only improving the spectrum detection speed by the block sparse of signal,but also enhancing the accuracy of the algorithm by OMP. Simulation results show that,the modified algorithm still can detect the occupancy of the channel in a very short time under a low detection error probability without the boundary of the non-zero sub-block.关键词
认知无线电/压缩感知/宽带/块稀疏Key words
cognitive radio/compressed sensing/wideband/block-sparse分类
信息技术与安全科学引用本文复制引用
刘正其,季薇..一种改进的基于BOMP的宽带频谱感知算法[J].计算机技术与发展,2014,(6):118-121,126,5.基金项目
江苏高校优势学科建设工程资助项目-“信息与通信工程” （）
南京邮电大学免评审类项目(NY212040) （NY212040）
