{"title":"带友好干扰机的星地混合中继网络物理层保密性分析","authors":"Xiaoqi Wang, Xiaohan Han, Ming Li","doi":"10.1016/j.phycom.2025.102828","DOIUrl":null,"url":null,"abstract":"<div><div>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.</div></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"73 ","pages":"Article 102828"},"PeriodicalIF":2.2000,"publicationDate":"2025-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Physical layer secrecy analysis of hybrid satellite–terrestrial relay networks with a friendly jammer\",\"authors\":\"Xiaoqi Wang, Xiaohan Han, Ming Li\",\"doi\":\"10.1016/j.phycom.2025.102828\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>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.</div></div>\",\"PeriodicalId\":48707,\"journal\":{\"name\":\"Physical Communication\",\"volume\":\"73 \",\"pages\":\"Article 102828\"},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2025-09-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physical Communication\",\"FirstCategoryId\":\"94\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S1874490725002319\",\"RegionNum\":4,\"RegionCategory\":\"计算机科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Communication","FirstCategoryId":"94","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1874490725002319","RegionNum":4,"RegionCategory":"计算机科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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.
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.