| 下行链路NOMA用户分组和功率分配算法 |
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| 引用本文： | 甄少华,马文平,罗炼飞. 下行链路NOMA用户分组和功率分配算法[J]. 计算机应用与软件, 2022, 39(3): 121-126+138. DOI: 10.3969/j.issn.1000-386x.2022.03.020 |
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| 作者姓名： | 甄少华 马文平 罗炼飞 |
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| 作者单位： | 西安电子科技大学通信工程学院 陕西 西安710071 |
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| 基金项目： | 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); |
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| 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。
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| 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 |
OPTIMIZATION ALGORITHM FOR USER MATCHING AND POWER ALLOCATION OF NOMA IN DOWN LINK |
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| Zhen Shaohua,Ma Wenping,Luo Lianfei. OPTIMIZATION ALGORITHM FOR USER MATCHING AND POWER ALLOCATION OF NOMA IN DOWN LINK[J]. Computer Applications and Software, 2022, 39(3): 121-126+138. DOI: 10.3969/j.issn.1000-386x.2022.03.020 |
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| Authors: | Zhen Shaohua Ma Wenping Luo Lianfei |
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| Affiliation: | (School of Telecommunication Engineering,Xidian University,Xi’an 710071,Shaanxi,China) |
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| Abstract: | 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. |
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| Keywords: | Non-orthogonal multiple access(NOMA) User quality Power allocation Edge user Quality of service(QoS) |
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