An analytical study on secure communication over fading wiretap channels with encoder-assisted side information and generalized shadow fading

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

Physical Communication Pub Date : 2025-08-09 DOI:10.1016/j.phycom.2025.102801

Ali Mohammad Khodadoust , Mario Eduardo Rivero-Ángeles , Víctor Barrera-Figueroa

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引用次数: 0

Abstract

In this paper, we extend Wyner’s three-node wiretap channel model by incorporating arbitrarily correlated shadow fading channels to better reflect real-world wireless environments and analyze its security performance at the physical layer in transmitting secure messages to a legitimate receiver over the main channel, where encoder-assisted side information (SI) is utilized to enhance the secrecy level. By adopting a Log-normal (LN) distribution model for the shadow fading of both the main and eavesdropper (transmitter-to-illegitimate-receiver) channels and assuming that the transmitter has full channel state information (CSI) of these channels, we derive closed-form expressions for the average secrecy capacity (ASC), secrecy outage probability (SOP), and the probability of non-zero secrecy capacity (PNSC) to provide an analytical understanding. Finally, the validity of our analytical results is confirmed through Monte Carlo (MC) simulations.

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基于编码器辅助侧信息和广义阴影衰落的衰落窃听信道安全通信分析研究

在本文中，我们扩展了Wyner的三节点窃听信道模型，加入任意相关的阴影衰落信道，以更好地反映真实的无线环境，并分析了其在物理层的安全性能，在主信道上将安全消息传输到合法的接收器，其中利用编码器辅助侧信息（SI）来提高保密级别。通过采用主信道和窃听信道（发送方到非法接收方）阴影衰落的对数正态（LN）分布模型，并假设发送方拥有这些信道的完整信道状态信息（CSI），我们推导出平均保密容量（ASC）、保密中断概率（SOP）和非零保密容量概率（PNSC）的封闭表达式，以提供分析理解。最后，通过蒙特卡罗（MC）仿真验证了分析结果的有效性。

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.