Integrated Sensing and Communications for Reconfigurable Intelligent Surface-Aided Cell-Free Networks

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-04-09 DOI:10.1109/LCOMM.2025.3558995

Shanza Shakoor;Quang Nhat Le;Een-Kee Hong;Berk Canberk;Trung Q. Duong

引用次数: 0

Abstract

This work explores a cell-free integrated sensing and communication (CF-ISAC) framework in which distributed access points work together to support communication users (UEs) with assistance from multiple reconfigurable intelligent surfaces (RISs) while simultaneously performing target sensing. An effective strategy is introduced for the joint optimization of communication parameters, sensing beamforming designs, and reflecting coefficients, with the goal of enhancing the minimum signal-to-interference-plus-noise ratio (SINR) among all UEs. To address the complexity of this non-convex optimization problem, a robust alternating optimization method is designed. The numerical results confirm that the proposed approach significantly boosts the minimum SINR in CF-ISAC systems, demonstrating the advantages of utilizing RISs.

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可重构智能表面辅助无单元网络的集成传感与通信

这项工作探索了一个无单元集成传感和通信（CF-ISAC）框架，其中分布式接入点协同工作，在多个可重构智能表面（RISs）的帮助下支持通信用户（ue），同时执行目标传感。提出了一种有效的通信参数、传感波束形成设计和反射系数联合优化策略，以提高各ue之间的最小信噪比（SINR）。针对该非凸优化问题的复杂性，设计了一种鲁棒交替优化方法。数值结果表明，该方法显著提高了CF-ISAC系统的最小信噪比，显示了利用RISs的优势。

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

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.