桂林电子科技大学学报2024，Vol.44Issue(4)：355-364,10.DOI:10.3969/1673-808X.2023220
去蜂窝大规模MIMO-NOMA上行链路用户分组及AP选择
Research on user grouping and AP selection in the uplink of cell-free massive MIMO-NOMA
摘要
Abstract
Focusing on the problems of user grouping and AP selection in the uplink of cell-free massive MIMO-NOMA system,a maximum channel correlation user grouping scheme and an AP selection scheme based on effective channel gain are proposed.First-ly,the maximum channel correlation user grouping scheme calculates the effective channel gain difference and channel linear corre-lation between any two users through statistics and the Pearson correlation coefficient.Then,users are grouped to minimize the dif-ference between any two users.Based on the user grouping results,users are first sorted according to user channel quality,and then connectable APs are selected for each user based on effective channel gain.Experimental results show that the user grouping scheme based on maximum channel correlation can reduce the interference level among multiple users and significantly improve the sum spectrum efficiency of the system and the fairness of communication.At the same time,the AP selection scheme based on effective channel gain can reduce interference between users and reduce the complexity of system calculations,effectively improving the sum spectrum efficiency of the system.关键词
去蜂窝/大规模MIMO/NOMA/用户分组/AP选择Key words
cell-free/massive MIMO/NOMA/user grouping/AP selection分类
信息技术与安全科学引用本文复制引用
黄燕婷,赵峰..去蜂窝大规模MIMO-NOMA上行链路用户分组及AP选择[J].桂林电子科技大学学报,2024,44(4):355-364,10.基金项目
国家自然科学基金(62461057) （62461057）
