摘要
将NOMA技术应用于下行认知中继协作网络,提出基于AF的认知多用户中继协作NOMA系统(CM-RC-NOMA),给出了不同认知中继协作方案下PU和SU中断性能,并推导了其闭合表达式;同时将AF中继协作方式与DF中继协作方式进行了对比。仿真结果表明,当SU到PU信道链路条件不差于BS到PU信道链路条件时,AF方式相比DF方式可以使PU获得更低的中断概率;另一方面,所提最佳认知中继协作方案相比传统最佳认知中继协作方案可以获得更佳的PU中断性能。
The non-orthogonal multiple access(NOMA)technology was studied in a downlink cognitive relay cooperation network.A cognitive multiuser relay cooperation based NOMA scheme was proposed(CM-RC-NOMA),in which,the outage performance of PU and SU were given under different cognitive relay cooperation schemes and the corresponding outage expressions were also derived.At the same time,the AF based relay cooperation method and the DF based relay cooperation method were compared.The simulation results show that the lower outage of PU can be achieved by AF method compared with DF method,when the channel condition of BS to PU is no more than that of SU to PU.It is also revealed that the optimal outage performance of PU can be achieved by the proposed best cognitive relay cooperation scheme in contrast to the traditional best cognitive relay cooperation scheme.
作者
李美玲
李莹
SAMI Muhaidat
董增寿
王安红
梁杰
丁丽萍
LI Meiling;LI Ying;SAMI Muhaidat;DONG Zengshou;WANG Anhong;LIANG Jie;DING Liping(School of Electronic and Information Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China;University of Surrey,Surrey GU27XH,UK;Institute of Software,Chinese Academy of Sciences,Beijing 100190,China)
出处
《通信学报》
EI
CSCD
北大核心
2018年第9期57-66,共10页
Journal on Communications
基金
国家自然科学基金资助项目(No.61672373
No.U1510115
No.91646203)
山西省高等学校科技创新基金资助项目(No.201802090)
山西省晋城科技攻关基金资助项目(No.201501004-4)
山西省互联网+3D打印协同创新中心基金资助项目
山西省科技创新团队基金资助项目(No.201705D131025)
山西省1331工程重点创新团队基金资助项目~~
