数据采集与处理2024，Vol.39Issue(5)：1297-1308,12.DOI:10.16337/j.1004-9037.2024.05.020
基于NOMA的室内可见光通信最优功率分配方案
Optimal Power Allocation Scheme for Indoor Visible Light Communication Based on NOMA
摘要
Abstract
In multi-user downlink indoor visible light communication system based on non-orthogonal multiple access technology(VLC-NOMA),an iterative power allocation scheme based on weighted sum-rate maximization is proposed to solve the problem of the conflict between sum-rate and user fairness.The objective of this scheme is to maximize the weighted sum-rate,and the user fairness can be adjusted by changing the weighted factor.Since the target problem is a non-convex optimization problem,this non-convex problem is transformed into a concave problem by auxiliary variable method and convex optimization theory,then solved by the Lagrange dual method,and an iterative power allocation algorithm is designed according to the solution of the problem.The convergence of the proposed algorithm,system sum-rate and user fairness are simulated.Results show that the proposed iterative power allocation algorithm has good convergence,and VLC-NOMA system can obtain better sum-rate performance than VLC-OMA system.By adjusting the weighted factor,better system sum-rate and user fairness can be obtained than the existing power allocation scheme at the smaller expense of system sum-rate.关键词
可见光通信/非正交多址接入/加权和速率最大化/功率分配/用户公平性Key words
visible light communication/non-orthogonal multiple access/weighted sum-rate maximization/power allocation/user fairness分类
信息技术与安全科学引用本文复制引用
周围,徐锐,李倩倩,窦文静..基于NOMA的室内可见光通信最优功率分配方案[J].数据采集与处理,2024,39(5):1297-1308,12.基金项目
国家自然科学基金(61701062) （61701062）
重庆市基础与前沿研究计划项目(cstc2019jcyj-msxmX0079). （cstc2019jcyj-msxmX0079）
