Minimizing distortion and enhancing security in Rayleigh fading channels

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

Physical Communication Pub Date : 2025-04-09 DOI:10.1016/j.phycom.2025.102679

Hafsat Muhammad Bashir , Yunquan Dong , James Msughter Adeke

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引用次数: 0

Abstract

The trade-off between security, reliability, and distortion in a direct communication link with an eavesdropper is investigated by adjusting both the transmission power and the transmission rate, which affects the distortion size of the distortion-limited coding. This involves encoding data at a predetermined rate with Channel Side Information (CSI) to ensure successful data recovery within a defined distortion threshold. Using higher transmit power and coding rates effectively minimizes average distortion but increases intercept probability, whereas opting for lower transmit power and coding rates reduces interception probability while amplifying signal distortion. Thus, we investigate the distortion-intercept probability trade-off across feasible transmit powers and transmission intervals. For a Rayleigh fading channel, we derived a closed-form expression for the IP and calculated the maximum power when transmitting with a fixed power such that the intercept probability is below a threshold. We also present a water-filling-based power allocation to minimize the average distortion under some intercept probability requirements. With the proposed method, both numerical and Monte Carlo simulation demonstrate that employing a power control strategy reduces the average distortion and intercept probability to 78% and 50%, respectively, showcasing the effectiveness of the approach.

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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.