摘要
对下行链路中非正交多址接入(Non-Orthogonal Multiple Access,NOMA)系统用户匹配和子带功率分配两个问题进行研究。提出优化分组方案,结合用户质量及子带吞吐量进行用户匹配,从而保证系统性能显著提升;提出基于比例公平的优化边缘用户质量因子的功率分配方案,在保证用户服务质量(Quality of Service,QoS)基础上优化边缘用户的传输性能,并利用Karush-Kuhn-Tucker(KKT)条件进行求解。仿真结果表明,系统吞吐量比传统的正交多址接入(Orthogonal Multiple Access,OMA)系统有明显提升。
The problems of user matching and sub-band power allocation for non-orthogonal multiple access(NOMA)systems in the downlink are studied.An optimized packetization scheme was proposed,and user matching was combined with user quality and subband throughput to ensure a significant improvement in system performance.A power allocation scheme for optimizing edge user quality factor based on a fair ratio was proposed to optimize the transmission of edge users while ensuring user QoS.The performance was solved by using Karush-Kuhn-Tucker condition.Simulation results show that the system throughput is significantly improved compared with the traditional orthogonal multiple access(OMA)system.
作者
甄少华
马文平
罗炼飞
Zhen Shaohua;Ma Wenping;Luo Lianfei(School of Telecommunication Engineering,Xidian University,Xi’an 710071,Shaanxi,China)
出处
《计算机应用与软件》
北大核心
2022年第3期121-126,138,共7页
Computer Applications and Software
基金
国家自然科学基金项目(61373171)
国家重点研发计划项目(2017YFB0802400)
高等学校创新引智计划项目(B08038)。
关键词
非正交多址接入
用户质量
功率分配
边缘用户
服务质量
Non-orthogonal multiple access(NOMA)
User quality
Power allocation
Edge user
Quality of service(QoS)
