西安电子科技大学学报（自然科学版）2017，Vol.44Issue(3)：101-107,7.DOI:10.3969/j.issn.1001-2400.2017.03.018
能量效率认知无线电协作感知和传输联合优化
Joint optimization of cooperative sensing and transmission in energy-efficiency cognitive radio
摘要
Abstract
Aiming at the low energy utilization caused by the sensing energy consumption of cognitive radio (CR),we propose to improve the energy efficiency (EE) of multi-channel CR by jointly optimizing cooperative spectrum sensing and transmission resources.Setting optimizing parameters such as cooperative spectrum sensing time,sensing threshold,transmission bandwidth and power,etc.,the optimization model for maximizing EE is built based on the periodic cooperative spectrum sensing.The proposed nonconvex optimization model is effectively resolved by a combined algorithm of the interior method and Dinkelbach's optimization.Simulation results show that when the detection probability is 0.6,compared with the traditional maximizing spectrum efficiency model,the transmission rate of the maximizing energy efficiency model increases by 100bit/(s.Hz1) under unit energy.The proposed model decreases the sensing power consumption and improves the energy utilization effectively.关键词
认知无线电/能量效率/协作频谱感知/频谱效率/凸优化Key words
cognitive radio/energy efficiency/cooperative spectrum sensing/spectrum efficiency/convex optimization分类
信息技术与安全科学引用本文复制引用
杨明,李翔,杨昊,刘鑫,陈琨奇..能量效率认知无线电协作感知和传输联合优化[J].西安电子科技大学学报（自然科学版）,2017,44(3):101-107,7.基金项目
国家自然科学基金资助项目(61601221) （61601221）
江苏省自然科学基金资助项目(BK20140828) （BK20140828）
中国博士后基金资助项目(2015M580425) （2015M580425）
中央高校基本科研业务费专项资金资助项目(DUT16RC(3)045) （DUT16RC(3）
