Power Minimization for RIS-Assisted Uplink MIMO-NOMA Systems Based on HBF

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-04-16 DOI:10.1109/LCOMM.2025.3561602

Gaopeng Li;Peiyu Wang;Wei Wu;Rongfang Song

引用次数: 0

Abstract

Non-orthogonal multiple access (NOMA), multiple-input multiple-output (MIMO), and reconfigurable intelligent surface (RIS) have drawn significant interest in the realm of wireless communication. In this letter, the total transmit power minimization for RIS-assisted uplink MIMO-NOMA systems based on hybrid beamforming (HBF) is studied. Additionally, extended successive interference cancellation (ESIC) is proposed. To be specific, users are grouped based on cascaded channel gains and interference from different groups are suppressed by ESIC. For the purpose of achieving minimal power consumption, we jointly design RIS phase shifts, HBF matrices, and the transmit power allocation. As evidenced by simulation results, the proposed methodology requires lower power consumption than traditional schemes.

查看原文本刊更多论文

基于HBF的ris辅助上行MIMO-NOMA系统功率最小化

非正交多址（NOMA）、多输入多输出（MIMO）和可重构智能表面（RIS）在无线通信领域引起了极大的兴趣。本文研究了基于混合波束形成（HBF）的ris辅助上行MIMO-NOMA系统的总发射功率最小化问题。此外，还提出了扩展连续干扰消除（ESIC）方法。具体来说，用户根据级联信道增益分组，来自不同分组的干扰被ESIC抑制。为了实现最小的功耗，我们共同设计了RIS相移、HBF矩阵和发射功率分配。仿真结果表明，该方法比传统方案功耗更低。

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分钟内获得全文求助全文

来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. 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 communication systems.