重庆邮电大学学报（自然科学版）2016，Vol.28Issue(5)：658-666,9.DOI:10.3979/j.issn.1673-825X.2016.05.008
认知多址接入系统中的能量消耗优化研究
Study on optimization of energy consumption in cognitive multiple access system
摘要
Abstract
The energy consumption is considered in cognitive multiple access system,which the channels are simultaneous-ly shared by multiple secondary users and primary users.The multiple channels are sensed and accessed by secondary users at the same time and the interferences on primary users are kept within a certain range.Sensing time,channels and inter ference power are needed to be properly allocated for reducing energy consumption.Moreover,the interference power is served as constraint condition for protecting quality of service of primary users.The constructed initial optimizing problem is the non-convex integer combinatorial fractional programming issues in the multi-users multi-channels sensing-based spec-trum sharing scheme.The concave relaxation is used to solve the issues which are further transformed the parametric linear problem for jointly optimizing sensing time,channels and power and an algorithm of minimizing energy consumption is pro-posed.Finally the impacts of the number of secondary users and channels and interference power on the energy consumption and optimal sensing time are discussed by simulations.Meanwhile the analysis is verified.关键词
认知无线电/多址接入/频谱共享/能量消耗Key words
cognitive radio/multiple access/spectrum sharing/energy consumption分类
信息技术与安全科学引用本文复制引用
谢显中,肖正瑛,张森林..认知多址接入系统中的能量消耗优化研究[J].重庆邮电大学学报（自然科学版）,2016,28(5):658-666,9.基金项目
国家自然科学基金（61271259，61301123）；重庆市教委科学技术研究项目 （）
