东南大学学报（英文版）2025，Vol.41Issue(4)：430-436,7.DOI:10.3969/j.issn.1003-7985.2025.04.004
用户数可扩展无蜂窝MIMO-OFDM确定性传输
Deterministic transmission in user-scalable cell-free MIMO-OFDM systems
摘要
Abstract
This paper proposes a data-and model-driven col-laborative resource scheduling method to maximize the spec-tral efficiency(SE)of cell-free(CF)downlink multiuser multiple-input multiple-output(MIMO)systems,subject to delay violation probability and power constraints.The method integrates the weighted minimum mean square error(WMMSE)algorithm within the safety reinforcement learn-ing(Safety-RL)framework.The original optimization problem is decomposed into two coupled subproblems.The Safety-RL algorithm leverages state features to determine user priority weights and allocate bandwidths,while the WMMSE algorithm calculates the precoding matrix and fur-ther schedules resources based on user priority weights to obtain the reward and costs of Safety-RL.Considering dy-namic user access in CF systems,a distributed algorithm with user scalability is also proposed.Simulation results demonstrate that the proposed approach improves the SE while meeting the different delay violation probability con-straints of users.Furthermore,the distributed algorithm of-fers comparable performance to the fully centralized method while considerably reducing model training overhead,par-ticularly as users dynamically access the system.关键词
时延违反率约束/无蜂窝/安全强化学习/资源调度Key words
delay violation probability constraint/cell-free/safety reinforcement learning/resource scheduling分类
信息技术与安全科学引用本文复制引用
张铖,张立,孟帆,黄永明..用户数可扩展无蜂窝MIMO-OFDM确定性传输[J].东南大学学报（英文版）,2025,41(4):430-436,7.基金项目
The National Natural Science Foundation of China(No.62271140,62225107),the Natural Science Foundation of Jiangsu Province(No.BK20240174),the Fundamental Research Funds for the Central Universities(No.2242022k60002),the Fund of Jiangsu Provincial Scientific Research Center of Applied Mathematics(No.BK20233002). （No.62271140,62225107）
