Physical layer security performance of cooperative backscatter-NOMA communication systems for multi-tags and multi-eavesdroppers

IF 2 4区计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC

Physical Communication Pub Date : 2025-03-27 DOI:10.1016/j.phycom.2025.102671

Gaojian Huang , Yuhui Zhou , Peiqing Guo , Xilai Wang , Xingwang Li , Junxia Li , Gang Yang

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引用次数: 0

Abstract

Ambient backscatter communication (AmBC) and non-orthogonal multiple access (NOMA) are promising techniques for addressing low power consumption and high spectral efficiency in the Internet of Things. This paper investigates a cooperative NOMA-AmBC symbiotic network with a tag selection strategy, analyzing its impact on communication performance in terms of reliability and security. An optimal tag selection strategy is used at backscatter devices (BDs) to improve system reliability. Closed-form expressions for outage probability (OP) and intercept probability (IP) are derived to characterize security performance, with their approximations and diversity gains analyzed at high signal-to-noise ratios. Given the vulnerability of BDs to eavesdroppers, IP is analyzed for both non-collusive and collusive scenarios. The analysis and simulation results show that the optimal tag selection scheme can achieve higher reliability. Moreover, altering the relevant system parameters can optimize the performance trade-off between reliability and security. It is also concluded that colluding eavesdroppers use shared eavesdropping information to enhance intercepting attacks, further compromising the system’s security.

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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.