Stacked intelligent metasurfaces-aided full-duplex cooperative rate-splitting multiple access system

IF 2.2 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Physical Communication Pub Date : 2025-07-11 DOI:10.1016/j.phycom.2025.102765

Chenghan Liang, Qiwei Huai, Yuanyi Liang, Weina Yuan

引用次数: 0

Abstract

The powerful interference management and multiple access capabilities of rate-splitting multiple access (RSMA) have been considered as a key technology for potential applications in 6G networks. On the other hand, stacked intelligent metasurfaces (SIM), as a hardware platform capable of supporting wave-domain beamforming, is known for its ability to suppress multi-user interference while reducing hardware costs. In this context, a SIM-assisted full-duplex cooperative RSMA (FD C-RSMA) system was proposed, focusing on the joint optimization of resource allocation and beamforming for the downlink. Given the non-convex nature of the optimization problem, it was decomposed into two subproblems, and an alternating optimization strategy based on successive convex approximation and projected gradient ascent was customized. Simulation results indicate that the SIM-assisted FD C-RSMA scheme outperforms the baseline schemes in terms of system sum rate.

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堆叠智能元表面辅助全双工协同分速多址系统

速率分割多址（RSMA）强大的干扰管理和多址能力被认为是6G网络中潜在应用的关键技术。另一方面，堆叠智能元表面（SIM）作为一种支持波域波束形成的硬件平台，以其抑制多用户干扰的能力而闻名，同时降低了硬件成本。在此背景下，提出了一种基于sim卡辅助的全双工合作RSMA （FD C-RSMA）系统，重点关注资源分配和下行波束形成的联合优化。针对优化问题的非凸性，将其分解为两个子问题，定制了基于连续凸逼近和投影梯度上升的交替优化策略。仿真结果表明，sim辅助的FD - rsma方案在系统和速率方面优于基准方案。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Physical Communication ENGINEERING, ELECTRICAL & ELECTRONICTELECO-TELECOMMUNICATIONS

CiteScore

5.00

自引率

9.10%

发文量

212

审稿时长

55 days

期刊介绍： PHYCOM: Physical Communication is an international and archival journal providing complete coverage of all topics of interest to those involved in all aspects of physical layer communications. Theoretical research contributions presenting new techniques, concepts or analyses, applied contributions reporting on experiences and experiments, and tutorials are published. Topics of interest include but are not limited to: Physical layer issues of Wireless Local Area Networks, WiMAX, Wireless Mesh Networks, Sensor and Ad Hoc Networks, PCS Systems; Radio access protocols and algorithms for the physical layer; Spread Spectrum Communications; Channel Modeling; Detection and Estimation; Modulation and Coding; Multiplexing and Carrier Techniques; Broadband Wireless Communications; Wireless Personal Communications; Multi-user Detection; Signal Separation and Interference rejection: Multimedia Communications over Wireless; DSP Applications to Wireless Systems; Experimental and Prototype Results; Multiple Access Techniques; Space-time Processing; Synchronization Techniques; Error Control Techniques; Cryptography; Software Radios; Tracking; Resource Allocation and Inference Management; Multi-rate and Multi-carrier Communications; Cross layer Design and Optimization; Propagation and Channel Characterization; OFDM Systems; MIMO Systems; Ultra-Wideband Communications; Cognitive Radio System Architectures; Platforms and Hardware Implementations for the Support of Cognitive, Radio Systems; Cognitive Radio Resource Management and Dynamic Spectrum Sharing.