基于SWIPT的认知中继网络中断性能分析  

Outage performance of cognitive relay networks simultaneous wireless information and power transfer

作　　者：刘宇 陈卓 罗丽平[2] LIU Yu;CHEN Zhuo;LUO Li-ping(Hunan Branch of National Computer Network Emergency Response,Technical Team/Coordination Center of China,Information Security Division,Changsha 410004,China;School of Electronic Information,Guangxi University for Nationalities,Nanning 530006,China)

机构地区：[1]国家计算机网络应急技术处理协调中心湖南分中心信息安全处,湖南长沙410004 [2]广西民族大学电子信息学院,广西南宁530006

出　　处：《广西大学学报（自然科学版）》2022年第3期704-711,共8页Journal of Guangxi University（Natural Science Edition）

基　　金：国家自然科学基金项目(61762011);广西自然科学基金项目(2018GXNSFAA294059)。

摘　　要：针对基于无线携能通信(SWIPT)的认知中继网络,考虑具有直接通信链路的情况,从理论上推导了该网络在underlay频谱共享模式下次用户中断概率的解析表达式,并通过蒙特卡罗(Monte-Carlo)仿真,与基于SWIPT的两跳认知中继网络、传统认知中继网络的中断性能进行比较。仿真结果证明理论推导的正确性,还表明具有直接链路的SWIPT认知网络次用户的中断概率降低了1~2个数量级,网络可靠性得到有效提高。Considering the system model with direct link,the analytical form of outage probability was derived for the cognitive relay networks with simultaneous wireless information and power transfer(SWIPT).Moreover,the outage performance of secondary user was compared with those of SWIPT two-hop cognitive relay networks and the conventional cognitive relay networks by Monte-Carlo simulations.The simulation results prove the correctness of the theoretical derivation,and the performance analysis is validated.The simulation results show that the outage probability of secondary user is decreased by 1~2 order of magnitude for SWIPT cognitive relay networks with direct link.The reliability of network is improved efficiently.

关 键 词：认知中继网络 无线携能通信 中断概率 直接链路 

分 类 号：TN929.5[电子电信—通信与信息系统]