计算机与现代化Issue(2)：29-35,7.DOI:10.3969/j.issn.1006-2475.2024.02.005
毫米波大规模MIMO-NOMA系统用户分簇和功率分配设计
Design Scheme of User Clustering and Power Distribution for Millimeter-Wave Massive MIMO-NOMA Systems
摘要
Abstract
To solve the problem of high computational complexity in millimeter wave massive multiple-input multiple-output non-orthogonal multiple access(MIMO-NOMA)systems,a scheme of user clustering and power distribution is proposed to im-prove the spectral efficiency.Firstly,user clustering scheme based on cluster-head selection is improved,in which the threshold and the number of clusters are determined dynamically according to the real channel.The clustering result is more suitable for the actual situation,and users can get greater gain from the beams.Then power allocation is designed with the goal of maximizing the weighted sum of spectral efficiency and energy efficiency of the system and solved by an improved meta-heuristic algorithm.By introducing new vector components to Particle Swarm Optimization(PSO)algorithm and adding cosine perturbation,the algo-rithm can converge to the global optimal value more quickly.Sand Cat Swarm Optimization(SCSO)algorithm is integrated to make the algorithm more accurate.The simulation results show that compared with the existing algorithms,the spectral efficiency and energy efficiency of the proposed scheme are better than the traditional schemes,and it is more suitable for multi-user cases.关键词
大规模MIMO/非正交多址/用户分簇/元启发算法/功率分配Key words
massive MIMO/non-orthogonal multiple access/user grouping/metaheuristic algorithm/power allocation分类
信息技术与安全科学引用本文复制引用
李旺旺,黄学军..毫米波大规模MIMO-NOMA系统用户分簇和功率分配设计[J].计算机与现代化,2024,(2):29-35,7.基金项目
国家自然科学基金资助项目(61427801) （61427801）
