基于无线携能和非正交多址接入的认知中继网络中断性能分析  

Outage performance analysis for cognitive relay networks based on SWIPT and NOMA

作　　者：王玉俊 罗丽平[1] WANG Yujun;LUO Liping(School of Electronics Information,Guangxi Minzu University,Nanning 530006,China)

机构地区：[1]广西民族大学电子信息学院,广西南宁530006

出　　处：《中山大学学报（自然科学版）（中英文）》2023年第1期169-180,共12页Acta Scientiarum Naturalium Universitatis Sunyatseni

基　　金：国家自然科学基金(61762011);广西自然科学基金(2018GXNSFAA294059);广西民族大学研究生创新计划(gxmzu-chxps202089)。

摘　　要：研究了基于无线携能通信(SWIPT,simultaneous wireless information and power transfer)和非正交多址接入(NOMA,non-orthogonal multiple access)的认知中继网络的中断性能。针对具有直接链路通信和两阶段通信两种传输模式,推导了系统总体中断概率的解析表达式和高信噪比条件下的渐近表达式,并通过Monte-Carlo仿真验证了理论推导的正确性。仿真结果表明,系统在直接通信模式下能获得更好的中断性能。此外,与传统的正交多址接入认知中继网络相比,基于SWIPT-NOMA的认知中继网络能获得更好的中断性能和更高的能量效率。The outage performance of the cognitive relay networks is analyzed based on simultaneous wireless information and power transfer(SWIPT)and non-orthogonal multiple access(NOMA).The analytical expressions of overall outage probability and asymptotic expressions on high signal-to-noise ratio(SNR)are derived for the direct link transmission mode and the two-stage communication transmission mode.The analytical expressions are validated by Monte-Carlo simulations.The simulation results demonstrate that the outage performance is improved by through the direct link transmission.Furthermore,compared with the conventional cognitive relay networks with orthogonal multiple access(OMA),superior outage performance and high energy efficiency are achieved for the cognitive relay networks based on SWIPT-NOMA.

关 键 词：无线携能通信 非正交多址接入 认知中继网络 中断性能 分集增益 

分 类 号：TN925[电子电信—通信与信息系统]