Enhancing Secrecy Capacity in Integrated Sensing and Communication Systems Using Pilot-Based Codebook Artificial Noise

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-01-13 DOI:10.1109/LCOMM.2025.3529214

Yebo Gu;Haozhen Qu;Tao Shen

引用次数: 0

Abstract

This letter investigates the use of pilot-based codebook artificial noise (PCAN) in Integrated Sensing and Communication (ISAC) systems to enhance physical layer security. ISAC technology integrates communication and sensing through shared resources, emphasizing the need for secure strategies. PCAN allows the receiver to extract information from the pilot codebook, effectively removing interference and increasing secrecy capacity. The non-convex secrecy capacity optimization problem is addressed by decomposing it into simpler subproblems. A semidefinite relaxation (SDR) and alternating optimization algorithm is proposed to maximize secrecy capacity while maintaining sensing accuracy. Simulation results show significant improvements, particularly at low and moderate Signal-to-Noise Ratio (SNR), with consistent gains at high SNRs. This work underscores the role of optimization techniques in enhancing secure communication and balancing secrecy with sensing performance in ISAC systems.

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利用导频码本人工噪声增强集成传感与通信系统的保密能力

本文研究了在集成传感和通信（ISAC）系统中使用基于导频的码本人工噪声（PCAN）来增强物理层安全性。ISAC技术通过共享资源集成通信和传感，强调对安全策略的需求。PCAN允许接收机从导频码本中提取信息，有效地消除干扰并增加保密能力。通过将非凸保密能力优化问题分解为更简单的子问题来解决该问题。为了在保证传感精度的同时最大化保密能力，提出了一种半定松弛交替优化算法。仿真结果显示了显著的改进，特别是在低信噪比和中等信噪比（SNR）下，在高信噪比下具有一致的增益。这项工作强调了优化技术在ISAC系统中增强安全通信和平衡保密与传感性能方面的作用。

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.