全双工协作多播业务在NOMA系统中的应用和性能  

Application and performance of full-duplex cooperative multicast in NOMA system

作　　者：汪巧 周彦果 杨新杰 李有明[1] 石伟 陈波 WANG Qiao;ZHOU Yanguo;YANG Xinjie;LI Youming;SHI Wei;CHEN Bo(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China;China Electronics Technology Group Corporation,Beijing 100041,China)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211 [2]中国电子科学研究院,北京100041

出　　处：《电信科学》2019年第10期69-76,共8页Telecommunications Science

摘　　要：研究了多播业务在协作非正交多址接入(non-orthogonal multiple access,NOMA)系统中的应用及其性能。在一个单播和多播混合业务的场景中,多播用户组中选择某个信道状态最好的用户作为中继进行解码转发单播用户的信号,并在中继用户支持全双工的模式下,分析和推导了单播用户的中断概率和平均可达速率的闭式表达式。蒙特卡洛仿真结果和理论推导高度一致,表明提出的协作多播应用可以极大改善单播用户的中断性能,且多播用户的容量性能在中继发射功率不是很高的情况下不会受到影响。The application of cooperative multicast in a non-orthogonal multiple access(NOMA)system and its performances was studied where a mixed service scenario consisting of a number of the multicast users and one unicast user was employed.In such a system,a cooperative relay path selection strategy was used and a best channel conditioned multicast user was selected as relay user to relay the unicast user’s signal.The unicast user outage probability and the relay user’s capacity in closed-form were then derived.Mont Carlo simulation results validate the analysis and show that the proposed scheme significantly enhances outage probability for unicast user while maintaining the same ergodic capacity for the relay user.

关 键 词：NOMA 多播业务 全双工中继 中断概率 平均可达速率 

分 类 号：TN925[电子电信—通信与信息系统]