电讯技术Issue(8)：829-835,7.DOI:10.3969/j.issn.1001-893x.2015.08.001
认知无线电网络子空间映射频谱共享
Subspace Projected Spectrum Sharing in Cognitive Radio Networks
摘要
Abstract
Through analyzing the analysis of transmission opportunities provided by subspace projection and spatial sub-channel allocation in ideal channel condition,a subspace projected spectrum sharing method is proposed for central multi-user multi-antenna cognitive radio networks. According to sensing results of the cognitive radio system( CRS) ,the number of available spatial sub-channels can be calculated. In order to guarantee the transmission of primary users( PUs) as well as provide transmitting opportunities to cognitive users( CUs) ,accessing control of CUs and subspace projection are adopted to avoid or reduce the interfer-ence between two systems. Simulation results show that,compared with existing spectrum sharing methods based on subspace projection,the proposed method can increase both the achievable sum rate and transmis-sion opportunities of CUs.关键词
认知无线电/频谱共享/多输入多输出/子空间映射Key words
cognitive radio/spectrum sharing/MIMO/subspace projection分类
信息技术与安全科学引用本文复制引用
荣玫..认知无线电网络子空间映射频谱共享[J].电讯技术,2015,(8):829-835,7.基金项目
国家自然科学基金资助项目(61201233,61271262) （61201233,61271262）
陕西省自然科学基础研究计划项目(2015JM6310) （2015JM6310）
中央高校科研业务费基础研究计划项目(2013G1241114,2014G1241043) Foundation Item:The National Natural Science Foundation of China(No.61201233,61271262) （2013G1241114,2014G1241043）
Shaanxi Province Natural Science Foundation (2015JM6310) （2015JM6310）
The Fundamental Research Funds for the Central Universities(2013G1241114,2014G1241043) （2013G1241114,2014G1241043）
