电讯技术2018，Vol.58Issue(1)：1-5,5.DOI:10.3969/j.issn.1001-893x.2018.01.001
认知中继网络中基于频谱感知的自适应功率控制策略
Adaptive Power Control Strategy Based on Spectrum Sensing for Cognitive Relay Networks
摘要
Abstract
An adaptive power control scheme is proposed for the cognitive relay networks with joint overlay and underlay spectrum sharing model.The transmit power of the secondary user is adjusted adaptively according to the spectrum sensing results and the interference channel condition.The outage probability of the secondary user is compared by Monte-Carlo simulations between the fixed power control scheme and pure overlay or underlay spectrum sharing schemes.The results show that,by employing the adaptive power control strategy,the interference probability of the secondary user to the primary user is decreased by 70％ ～80％ under the same outage probability.Also,the outage probability of the secondary user is reduced by 1 ～ 2 orders of magnitude under the same interference probability.Thus,the performance of the spectrum sharing is improved effectively.关键词
认知中继网络/overlay频谱共享/underlay频谱共享/自适应功率控制Key words
cognitive relay network/overlay spectrum sharing/underlay spectrum sharing/adaptive power control分类
信息技术与安全科学引用本文复制引用
罗丽平,郑惠琴..认知中继网络中基于频谱感知的自适应功率控制策略[J].电讯技术,2018,58(1):1-5,5.基金项目
国家自然科学基金资助项目(61362010) （61362010）
广西自然科学基金资助项目(2016GXNSFAA380091) （2016GXNSFAA380091）
广西高等学校科学研究资助项目(2013YB073) （2013YB073）
广西高校复杂系统与智能计算开放课题(2016CSCI08) （2016CSCI08）
