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Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps
Nonorthogonal multiple access (NOMA) is a relevant technology for realizing the primary goals of next-generation wireless networks, such as high connectivity and stability. Because a rising number of users are becoming connected, user data security has become a critical issue. Many chaotic communica...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2023
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9858096/ https://www.ncbi.nlm.nih.gov/pubmed/36673282 http://dx.doi.org/10.3390/e25010140 |
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author | Abu Al-Atta, Mariam Said, Karim A. Mohamed, Mohamed A. Raslan, Walid |
author_facet | Abu Al-Atta, Mariam Said, Karim A. Mohamed, Mohamed A. Raslan, Walid |
author_sort | Abu Al-Atta, Mariam |
collection | PubMed |
description | Nonorthogonal multiple access (NOMA) is a relevant technology for realizing the primary goals of next-generation wireless networks, such as high connectivity and stability. Because a rising number of users are becoming connected, user data security has become a critical issue. Many chaotic communication systems have been established to address this important issue via exhibition of affordable physical-layer-security solutions. In this study, we propose a chaotic downlink NOMA (C-DL-NOMA) system over the additive white Gaussian noise and Rayleigh-fading channels to enhance the security of the DL-NOMA system. The proposed algorithm is based on a coherent analog modulation technique that combines various chaotic maps for chaotic masking of encrypted data. On the transmitter, chaotic encryption was used for transmitted data with fixed power-allocation-level control, whereas on the receiver, successive interference-cancellation demodulation was utilized to detect multiple users, after which chaotic decryption was performed. Simulation results were evaluated based on security analyses, such as statistical analysis (histogram and correlation analyses and information entropy), bit-error-rate performance, and achievable-data-rate performance. According to these security analyses and numerical results, the proposed C-DL-NOMA system outperformed traditional unencrypted NOMA systems. |
format | Online Article Text |
id | pubmed-9858096 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-98580962023-01-21 Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps Abu Al-Atta, Mariam Said, Karim A. Mohamed, Mohamed A. Raslan, Walid Entropy (Basel) Article Nonorthogonal multiple access (NOMA) is a relevant technology for realizing the primary goals of next-generation wireless networks, such as high connectivity and stability. Because a rising number of users are becoming connected, user data security has become a critical issue. Many chaotic communication systems have been established to address this important issue via exhibition of affordable physical-layer-security solutions. In this study, we propose a chaotic downlink NOMA (C-DL-NOMA) system over the additive white Gaussian noise and Rayleigh-fading channels to enhance the security of the DL-NOMA system. The proposed algorithm is based on a coherent analog modulation technique that combines various chaotic maps for chaotic masking of encrypted data. On the transmitter, chaotic encryption was used for transmitted data with fixed power-allocation-level control, whereas on the receiver, successive interference-cancellation demodulation was utilized to detect multiple users, after which chaotic decryption was performed. Simulation results were evaluated based on security analyses, such as statistical analysis (histogram and correlation analyses and information entropy), bit-error-rate performance, and achievable-data-rate performance. According to these security analyses and numerical results, the proposed C-DL-NOMA system outperformed traditional unencrypted NOMA systems. MDPI 2023-01-10 /pmc/articles/PMC9858096/ /pubmed/36673282 http://dx.doi.org/10.3390/e25010140 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Abu Al-Atta, Mariam Said, Karim A. Mohamed, Mohamed A. Raslan, Walid Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps |
title | Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps |
title_full | Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps |
title_fullStr | Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps |
title_full_unstemmed | Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps |
title_short | Physical-Layer Security in Power-Domain NOMA Based on Different Chaotic Maps |
title_sort | physical-layer security in power-domain noma based on different chaotic maps |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9858096/ https://www.ncbi.nlm.nih.gov/pubmed/36673282 http://dx.doi.org/10.3390/e25010140 |
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