Non-Orthogonal Multiple Access for RIS-Assisted mmWave Multicast Transmission

IF 5.5 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS IEEE Wireless Communications Letters Pub Date : 2025-01-09 DOI:10.1109/LWC.2025.3527626

Hui Chen;Sihan Zhuang;Hongcheng Zhuang

{"title":"Non-Orthogonal Multiple Access for RIS-Assisted mmWave Multicast Transmission","authors":"Hui Chen;Sihan Zhuang;Hongcheng Zhuang","doi":"10.1109/LWC.2025.3527626","DOIUrl":null,"url":null,"abstract":"To enhance the wireless channel quality of the worst user and further improve spectral efficiency for multicast transmission, this letter proposes a non-orthogonal multiple access (NOMA) and reconfigurable intelligent surface (RIS)-assisted joint multicast and unicast transmission approach (NR-JMU) for mmWave system. We investigate the impact of the decoding order of successive interference cancellation (SIC) and formulate the joint multicast and unicast transmission problem to maximize the multicast spectral efficiency (MSE) while ensuring the reliability of the unicast user. And then, an enhanced semidefinite relaxation based triple alternation optimization algorithm (eSDR-TAO) is propsoed to figure out the optimal active beamforming, passive beamforming and power allocation. Simulation results show that eSDR-TAO exhibits fast and stable convergence performance. The results also indicate that the SIC decoding order is related to the unicast rate requirement, and unicast-first improves the MSE up to 124.5% and 15%, compared with the orthogonal multiple access and multicast-first, respectively.","PeriodicalId":13343,"journal":{"name":"IEEE Wireless Communications Letters","volume":"14 3","pages":"901-905"},"PeriodicalIF":5.5000,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Wireless Communications Letters","FirstCategoryId":"94","ListUrlMain":"https://ieeexplore.ieee.org/document/10835125/","RegionNum":3,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"COMPUTER SCIENCE, INFORMATION SYSTEMS","Score":null,"Total":0}

引用次数: 0

Abstract

To enhance the wireless channel quality of the worst user and further improve spectral efficiency for multicast transmission, this letter proposes a non-orthogonal multiple access (NOMA) and reconfigurable intelligent surface (RIS)-assisted joint multicast and unicast transmission approach (NR-JMU) for mmWave system. We investigate the impact of the decoding order of successive interference cancellation (SIC) and formulate the joint multicast and unicast transmission problem to maximize the multicast spectral efficiency (MSE) while ensuring the reliability of the unicast user. And then, an enhanced semidefinite relaxation based triple alternation optimization algorithm (eSDR-TAO) is propsoed to figure out the optimal active beamforming, passive beamforming and power allocation. Simulation results show that eSDR-TAO exhibits fast and stable convergence performance. The results also indicate that the SIC decoding order is related to the unicast rate requirement, and unicast-first improves the MSE up to 124.5% and 15%, compared with the orthogonal multiple access and multicast-first, respectively.

查看原文

微信好友朋友圈 QQ好友复制链接

本刊更多论文

ris辅助毫米波多播传输的非正交多址

为了提高最差用户的无线信道质量，进一步提高组播传输的频谱效率，本文提出了一种非正交多址（NOMA）和可重构智能面（RIS）辅助的毫米波系统组播和单播联合传输方法（NR-JMU）。为了在保证单播用户可靠性的同时最大限度地提高组播频谱效率（MSE），研究了连续干扰消除（SIC）解码顺序的影响，并提出了组播和单播联合传输的问题。在此基础上，提出了一种基于半定松弛的增强三交替优化算法（eSDR-TAO），求解出最优的有源波束形成、无源波束形成和功率分配。仿真结果表明，eSDR-TAO具有快速稳定的收敛性能。结果还表明，SIC解码顺序与单播速率要求有关，单播优先与正交多址和组播优先相比，MSE分别提高了124.5%和15%。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文去求助

来源期刊

IEEE Wireless Communications Letters Engineering-Electrical and Electronic Engineering

CiteScore

12.30

自引率

6.30%

发文量

481

期刊介绍： IEEE Wireless Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of wireless communications. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of wireless communication systems.

期刊最新文献

Constellation-Based Blind Sensing for OFDM-ISAC with Cochannel Interference Wideband NF-ISAC: Subcarrier Allocation for Sensing and Beamforming An Improved OCDM-FMCW ISAC Waveform with a Cyclically Shifted Dedicated Sensing Subcarrier Index Beyond Prompts: Preserving Semantics in Diffusion-based Semantic Communication LAURA: LLM-Assisted UAV Routing for AoI Minimization