电讯技术2016，Vol.56Issue(3)：246-251,6.DOI:10.3969/j.issn.1001-893x.2016.03.003
认知网中感知时间和功率控制的联合优化机制
A Joint Optimization Mechanism of Sensing Time and Power Control in Cognitive Networks
摘要
Abstract
In cognitive wireless network,in order to maximize the throughput of the cognitive user,a mecha-nism which can jointly optimize the sensing time and the transmit power is proposed. Under the interfer-ence constraint of the cognitive system,the cognitive user throughput is formulated as an optimization prob-lem with multiple constraints. The optimal power and spectrum sensing schemes are analyzed. According to the theoretical analysis results,the joint iterative mechanism is proposed to maximize the throughput of the cognitive user by determining the appropriate sensing parameters. The simulation results show that the proposed joint optimization mechanism has lower complexity and the user throughput of the proposed joint optimization mechanism is very closed to that of the optimal scheme in theory.关键词
认知无线电/频谱感知/功率控制/联合优化Key words
cognitive radio/spectrum sensing/power control/joint optimization分类
信息技术与安全科学引用本文复制引用
朱江,段昂,郭兵..认知网中感知时间和功率控制的联合优化机制[J].电讯技术,2016,56(3):246-251,6.基金项目
国家自然科学基金资助项目(61102062,61271260) （61102062,61271260）
教育部科学技术研究重点项目(212145) （212145）
重庆市科委自然科学基金项目(cstc2015jcyjA40050) （cstc2015jcyjA40050）
