Secrecy Energy Efficiency Maximization for ARIS-Assisted Multiuser MISO Systems

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-12-31 DOI:10.1109/LCOMM.2024.3524559

Yibo Yi;Xinyue Hu;Caihong Kai

引用次数: 0

Abstract

In this letter, we investigate secure secrecy maximization with the aid of active reconfigurable intelligent surface (ARIS). In particular, we consider the multiuser multiple-input and single-output (MISO) system under the presence of a multi-antenna eavesdropper, where full-duplex (FD) legitimate users proactively emit artificial noise (AN) to disrupt the eavesdropper’s reception. Towards this end, we formulate the secrecy energy efficiency (SEE) maximization problem and propose an alternating optimization-based two-level algorithm to solve it, where the semi-definite programming (SDP) combined with successive convex approximation (SCA) is adopted. Simulation results reveal that the proposed scheme has an 84.9% SEE gain over the passive RIS scheme for

$N=150$

and gradually decreases when N increases. Moreover, a maximum 13.6% SEE gain for

$N=250$

can be further obtained compared to the ARIS scheme without AN.

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ris辅助多用户MISO系统的保密能源效率最大化

在这封信中，我们研究了借助主动可重构智能表面（ARIS）的安全保密性最大化。特别地，我们考虑了多天线窃听器存在下的多用户多输入单输出（MISO）系统，其中全双工（FD）合法用户主动发出人工噪声（AN）来干扰窃听器的接收。为此，我们提出了保密能量效率（SEE）最大化问题，并提出了一种基于交替优化的两级算法来求解该问题，该算法采用半确定规划（SDP）和连续凸逼近（SCA）相结合的方法。仿真结果表明，当N=150时，该方案的SEE增益比无源RIS方案高84.9%，且随N的增加而逐渐降低。此外，与没有AN的ARIS方案相比，在$N=250$时可以进一步获得最大13.6%的SEE增益。

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.