基于RSMA的无线光通信中预编码与功率分配研究  

Study on Pre⁃coding and Power Allocation in RSMA⁃based Wireless Optical Communication

作　　者：梁艳[1,2] 张鹏 张鹍[3] LIANG Yan;ZHANG Peng;ZHANG Kun(Key Laboratory of Computing Power Network and Information Security,Ministry of Education,Shandong Computer Science Center(National Supercomputer Center in Jinan),Qilu University of Technology(Shandong Academy of Sciences),Jinan 250014,China;Shandong Provincial Key Laboratory of Computer Networks,Shandong Fundamental Research Center for Computer Science,Jinan 250014,China;Electric Power Control Center,State Grid Shandong Electric Power Company,Jinan 250001,China)

机构地区：[1]齐鲁工业大学(山东省科学院)山东省计算中心(国家超级计算济南中心)算力互联网与信息安全教育部重点实验室,济南250014 [2]山东省计算机网络重点实验室山东省基础科学研究中心(计算机科学),济南250014 [3]国网山东省电力公司电力调度控制中心,济南250001

出　　处：《光通信研究》2024年第3期140-146,共7页Study on Optical Communications

摘　　要：【目的】针对无线光通信(OWC)系统中应用速率分拆接入(RSMA)技术的资源分配问题,提出一种基于线性逼近的联合预编码矩阵和速率分配算法,以提高系统的可靠性和性能。【方法】采用变量转换和线性逼近的方法将非凸分阶函数转化为凸函数。通过联合预编码矩阵和速率分配算法,有效地分配系统资源,提高系统性能。为了求解最优解,采用连续迭代算法进行优化。【结果】仿真结果表明,文章所提出的联合优化方案显著降低了系统中断概率,并具有快速的收敛速率。这意味着所提方案能够在基于RSMA的OWC(RSMA⁃OWC)系统中提供更可靠和高效的通信性能。【结论】文章所提方案为OWC系统中的RSMA技术提供了有效的资源分配方法,提高了系统的可靠性和性能。进一步的研究应聚焦于RSMA⁃OWC系统的中断概率问题以及资源分配、预编码设计和应用扩展等方面的挑战。该研究为推动RSMA技术在OWC领域的应用和发展提供了有价值的参考。【Objective】The objective of this study is to investigate the resource allocation problem in Optical Wireless Communica tion(OWC)systems using Rate Splitting Multiple Access(RSMA)technique.We propose a joint precoding matrix and rate allo cation algorithm based on linear approximation to enhance the system reliability and performance.【Methods】We employ variable transformation and linear approximation techniques to convert the non⁃convex fractional functions into convex ones.By using the joint precoding matrix and rate allocation algorithm,system resources can be effectively allocated to improve system performance.The optimization problem is solved using a continuous iterative algorithm to obtain the optimal solution.【Results】Simulation re sults demonstrate that the proposed joint optimization scheme significantly reduces the system outage probability and exhibits a fast convergence rate.This indicates that the proposed method can provide more reliable and efficient communication performance in the RSMA⁃OWC system,which is based on rate splitting access.【Conclusion】This study provides an effective resource alloca tion method for RSMA technology in OWC systems,enhancing system reliability and performance.Further research should focus on the challenge of system outage probability in RSMA⁃OWC systems,as well as resource allocation,precoding design,and ap plication scalability.This study offers valuable insights to promote the application and development of RSMA technology in the field of OWC.

关 键 词：速率分拆接入 无线光通信 资源分配 变量转换 线性逼近 

分 类 号：TN929[电子电信—通信与信息系统]