中国电机工程学报2025，Vol.45Issue(3)：834-845,中插3,13.DOI:10.13334/j.0258-8013.pcsee.231416
下行NOMA-PLC系统最优功率分配方法研究
Research on Optimal Power Allocation Method in Downlink NOMA-PLC System
摘要
Abstract
In order to improve the throughput and user capacity of the downlink non-orthogonal multiple access&power line communication(NOMA-PLC)system,this paper proposes incorporating NOMA technology into the PLC channel with lognormal fading,and studies the optimal power allocation scheme.Assuming that the downlink NOMA-PLC system contains multiple NOMA clusters,and each cluster operates in an independent resource block,the optimal power allocation problem in the system and rate maximization is equivalent to the minimum power consumption problem of each cluster,and each NOMA cluster is equivalent to a virtual orthogonal multiple access(OMA)user to obtain the effective channel gain of the user in a closed form.Then,the proposed fast water injection algorithm is used to solve the sum rate maximization problem,and finally the global optimal power allocation scheme is obtained and analyzed by Monte-Carlo simulation.The simulation results show that compared with the traditional OMA-PLC system,the NOMA-PLC power allocation scheme proposed in this paper has significantly improved performance in terms of system outage probability,minimum power consumption of the transmitter,and average sum-rate.关键词
非正交多址/电力线通信/注水算法/功率分配/最大化和速率Key words
non-orthogonal multiple access(NOMA)/power line communication(PLC)/water-filling algorithm/power allocation/maximization sum-rate分类
信息技术与安全科学引用本文复制引用
曹旺斌,唐宏凯,谢志远,张志坤,胡正伟..下行NOMA-PLC系统最优功率分配方法研究[J].中国电机工程学报,2025,45(3):834-845,中插3,13.基金项目
国家自然科学基金项目(62001166,52177083) （62001166,52177083）
河北省自然科学基金项目(E2019502186) （E2019502186）
中央高校基本科研业务费专项资金资助项目(2021MS073). Project Supported by National Natural Science Foundation of China(62001166,52177083) （2021MS073）
Natural Science Foundation of Hebei Province(E2019502186) （E2019502186）
Fundamental Research Funds for the Central Universities(2021MS073). （2021MS073）
