Illegal Sensing Suppression Based on Clustered Subcarrier Structure in OFDM System

IF 4.4 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2025-07-18 DOI:10.1109/LCOMM.2025.3590436

Hanbo Jia;Lin Ma;Xiaoshuai Li

引用次数: 0

Abstract

Integration of communication and radar enables emerging applications while causing sensing information leakage. In this letter, we propose clustered subcarrier structure to implement illegal sensing suppression (ISS) in orthogonal frequency division multiplexing (OFDM) systems. Specifically, following the ambiguity function (AF), the proposed clustered structure exploits removable singularities in its AF to generate virtual interference, thereby deteriorating the illegal detection. The optimal parameters are further derived by minimizing proposed peak-to-virtual-interference ratio (PVIR), and the subcarrier-ISS trade-off is investigated between the number of data subcarriers and ISS capacity. Simulation results demonstrate the superior ISS of proposed approach compared to other baselines.

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基于聚类子载波结构的OFDM系统非法感知抑制

通信和雷达的集成使新兴应用成为可能，同时也造成了传感信息的泄漏。在这封信中，我们提出了集群子载波结构来实现正交频分复用（OFDM）系统中的非法感知抑制（ISS）。具体而言，在模糊函数（AF）之后，本文提出的聚类结构利用其AF中的可移除奇异点产生虚拟干扰，从而恶化非法检测。通过最小化所提出的峰值与虚拟干扰比（PVIR），进一步推导出最优参数，并研究了子载波与ISS容量之间的权衡。仿真结果表明，与其他基准相比，该方法具有更好的ISS。

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.