通信学报2017，Vol.38Issue(5)：145-156,12.DOI:10.11959/j.issn.1000-436x.2017108
认知中继网络中基于能效的协作传输技术研究
Energy-efficient cooperative sensing and transmission in relay-assisted cognitive radio network
摘要
Abstract
An innovative EE-oriented cooperative sensing and transmission scheme in relay-assisted cognitive radio networks,called energy-efficient best-relay cooperative transmission (BCT) was proposed.Based on the BCT scheme,mean energy efficiency (MEE) maximization problem with sensing duration and transmitting power as optimization variables was modeled for fading channels under constraint of minimal secondary outage probability.By virtue of Jensen's inequality,the original optimization problem was decomposed into two relatively independent subproblems which solved sensing duration and power allocation respectively.And for the two subproblems,an efficient cross iteration based algorithm was proposed to obtain the suboptimal solutions.Both analytical and simulation results demonstrate that the proposals can achieve significantly higher EE while enhancing reliability of secondary transmission remarkably compared to non-cooperation single cognitive transmission schemesin high QoS requirement.关键词
认知无线电/协作感知/中继传输/能量效率/资源分配Key words
cognitive radio/cooperative sensing/relay transmission/energy efficiency/resource allocation分类
信息技术与安全科学引用本文复制引用
冯立,邝育军,吴斌伟,付新川..认知中继网络中基于能效的协作传输技术研究[J].通信学报,2017,38(5):145-156,12.基金项目
国家高技术研究发展计划(“863”计划)基金资助项目(No.2014AA01A703) （“863”计划）
国家自然科学基金资助项目(No.61471089,No.61201129) （No.61471089,No.61201129）
华为公司基金资助项目(No.YB2014110120) （No.YB2014110120）
四川省教育厅科研基金资助项目(No.16ZB0504) （No.16ZB0504）
四川广播电视大学教学改革基金资助项目(No.XMGCJS2016001Q).The National High Technology Research and Development Program of China (863 Program) (No.2014AA01A703),The National Natural Science Foundation of China (No.61471089,No.61201129),The Fund of Huawei Corporation (No.YB2014110120),Research Project of Sichuan Province Education Department (No.16ZB0504),Education and Teaching Reform Project of Sichuan Radio and TV University (No.XMGCJS2016001Q) （No.XMGCJS2016001Q）
