{"title":"Maximizing energy efficiency for covert communication in NOMA systems with reradiating on antenna","authors":"Yanyang Zeng , Panpan Jia , Xingwang Li , Xinji Tian","doi":"10.1016/j.phycom.2024.102468","DOIUrl":null,"url":null,"abstract":"<div><p>A resource allocation method is proposed to maximize the energy efficiency for covert communication in downlink NOMA systems via reradiating on antennas. Firstly, the optimization problem of maximizing the effective covert energy efficiency of the covert user is constructed under the condition of satisfying the outage probability of the public user and the error detection probability of the warden. Then, the optimization problem is simplified, and the solution of the optimization problem is given when the power allocation coefficient of NOMA is known. Finally, the optimal solution is obtained by traversing the power allocation coefficient of NOMA and solving the optimization problem for each power allocation coefficient. The simulation results show that with the increase of the total power, the energy efficiency first increases and then tends to a constant, that is, there is an optimal value of the power allocation coefficient, which maximizes the energy efficiency.</p></div>","PeriodicalId":48707,"journal":{"name":"Physical Communication","volume":"66 ","pages":"Article 102468"},"PeriodicalIF":2.0000,"publicationDate":"2024-08-15","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/S1874490724001861","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}
引用次数: 0
Abstract
A resource allocation method is proposed to maximize the energy efficiency for covert communication in downlink NOMA systems via reradiating on antennas. Firstly, the optimization problem of maximizing the effective covert energy efficiency of the covert user is constructed under the condition of satisfying the outage probability of the public user and the error detection probability of the warden. Then, the optimization problem is simplified, and the solution of the optimization problem is given when the power allocation coefficient of NOMA is known. Finally, the optimal solution is obtained by traversing the power allocation coefficient of NOMA and solving the optimization problem for each power allocation coefficient. The simulation results show that with the increase of the total power, the energy efficiency first increases and then tends to a constant, that is, there is an optimal value of the power allocation coefficient, which maximizes the energy efficiency.
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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