带友好干扰机的星地混合中继网络物理层保密性分析

IF 2.2 4区 计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Xiaoqi Wang, Xiaohan Han, Ming Li
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引用次数: 0

摘要

本工作研究了具有友好干扰器的混合卫星-地面中继网络的物理层保密性能。该网络使用基于卫星的架构,其中卫星旨在通过中继与目标用户进行通信。中继节点使用解码转发(DF)协议处理信号。但是,信号在传输过程中容易被窃听。因此,采用友方无人机(UAV)发射干扰信号,防止窃听。假设卫星链路遵循阴影-里奇衰落,而地面和窃听链路采用瑞利衰落模型。导出了系统保密中断概率(SOP)的解析公式及其渐近形式,用于评估系统的保密性能。进一步研究了系统的吞吐量和非零保密能力。同时,数值和仿真结果支持了理论分析,显示了密钥通道和系统特性对物理层安全性的影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Physical layer secrecy analysis of hybrid satellite–terrestrial relay networks with a friendly jammer
This work examines the physical layer secrecy performance of a hybrid satellite–terrestrial relay network with a friendly jammer. The network uses a satellite-based architecture, in which a satellite aims to make communication with a destination user via a relay. The relay node uses decode-and-forward (DF) protocol to process the signal. However, the signal is vulnerable to eavesdropping during transmission. Therefore, a friendly unmanned aerial vehicle (UAV) is employed to emit jamming signals to prevent eavesdropping. The satellite link is assumed to follow the Shadowed-Rician fading, while the terrestrial and eavesdropping links are characterized by the Rayleigh fading model. The analytical formula for the system secrecy outage probability (SOP) and its asymptotic form are derived to assess the secrecy performance. Furthermore, the system throughput and non-zero secrecy capacity are examined. Meanwhile, numerical and simulative results support the theoretical analysis, showing the impact of key channel and system characteristics on physical layer security.
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来源期刊
Physical Communication
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.
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