Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels

We propose a novel transmission scheme for the parallel Gaussian broadcast channel with confidential messages (BCCM). In this model, The source node wishes to transmit a confidential message to each user over <inline-formula> <tex-math notation="LaTeX">$N$ </tex-math><...

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Autores principales:	Said E. El-Khamy, Dalia Ibrahim, Karim Banawan
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	OFDM SNOFDM sparse signal processing physical layer security broadcast channel with confidential messages Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/5aedc8d79420487a88b42434e28e6335
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spelling	oai:doaj.org-article:5aedc8d79420487a88b42434e28e63352021-11-26T00:01:54ZSparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels2169-353610.1109/ACCESS.2021.3127432https://doaj.org/article/5aedc8d79420487a88b42434e28e63352021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9611250/https://doaj.org/toc/2169-3536We propose a novel transmission scheme for the parallel Gaussian broadcast channel with confidential messages (BCCM). In this model, The source node wishes to transmit a confidential message to each user over <inline-formula> <tex-math notation="LaTeX">$N$ </tex-math></inline-formula> independent sub-channels, where each sub-channel is degraded for one user than others. Our objective is to design a secure transmission technique that maximizes the sum secrecy rate under an average power constraint. The most common technique to tackle this problem in practice is orthogonal frequency division multiplexing (OFDM). Nevertheless, the OFDM-based BCCM suffers from excessive bandwidth utilization due to the sub-carrier orthogonality requirement. We propose a sparse non-orthogonal frequency-division Multiplexing (SNOFDM) transmission scheme. In SNOFDM, sub-carriers are generated by first selecting a subset of orthogonal sub-channels to reduce spectral resources. Then, the selected sub-channels are multiplexed in time to generate non-orthogonal sub-carriers. This, in effect increases, the spectral efficiency compared to OFDM. To overcome the interference introduced due to the non-orthogonality of sub-carriers, the transmitter sends the sparsest representation of the transmitted codeword. Furthermore, we provide a sub-carrier selection and power control procedures to maximize the sum rate of SNOFDM according to CSI fed back from receivers to source node. Our numerical results show that SNOFDM offers better spectral efficiency and a higher secrecy rate compared to OFDM. We provide extensive simulation results to study the effects of transmission parameters of SNOFDM on the achievable secrecy rate.Said E. El-KhamyDalia IbrahimKarim BanawanIEEEarticleOFDMSNOFDMsparse signal processingphysical layer securitybroadcast channel with confidential messagesElectrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 155651-155661 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	OFDM SNOFDM sparse signal processing physical layer security broadcast channel with confidential messages Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	OFDM SNOFDM sparse signal processing physical layer security broadcast channel with confidential messages Electrical engineering. Electronics. Nuclear engineering TK1-9971 Said E. El-Khamy Dalia Ibrahim Karim Banawan Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels
description	We propose a novel transmission scheme for the parallel Gaussian broadcast channel with confidential messages (BCCM). In this model, The source node wishes to transmit a confidential message to each user over <inline-formula> <tex-math notation="LaTeX">$N$ </tex-math></inline-formula> independent sub-channels, where each sub-channel is degraded for one user than others. Our objective is to design a secure transmission technique that maximizes the sum secrecy rate under an average power constraint. The most common technique to tackle this problem in practice is orthogonal frequency division multiplexing (OFDM). Nevertheless, the OFDM-based BCCM suffers from excessive bandwidth utilization due to the sub-carrier orthogonality requirement. We propose a sparse non-orthogonal frequency-division Multiplexing (SNOFDM) transmission scheme. In SNOFDM, sub-carriers are generated by first selecting a subset of orthogonal sub-channels to reduce spectral resources. Then, the selected sub-channels are multiplexed in time to generate non-orthogonal sub-carriers. This, in effect increases, the spectral efficiency compared to OFDM. To overcome the interference introduced due to the non-orthogonality of sub-carriers, the transmitter sends the sparsest representation of the transmitted codeword. Furthermore, we provide a sub-carrier selection and power control procedures to maximize the sum rate of SNOFDM according to CSI fed back from receivers to source node. Our numerical results show that SNOFDM offers better spectral efficiency and a higher secrecy rate compared to OFDM. We provide extensive simulation results to study the effects of transmission parameters of SNOFDM on the achievable secrecy rate.
format	article
author	Said E. El-Khamy Dalia Ibrahim Karim Banawan
author_facet	Said E. El-Khamy Dalia Ibrahim Karim Banawan
author_sort	Said E. El-Khamy
title	Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels
title_short	Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels
title_full	Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels
title_fullStr	Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels
title_full_unstemmed	Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels
title_sort	sparse non-orthogonal frequency division multiplexing for secure transmission over broadcast channels
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/5aedc8d79420487a88b42434e28e6335
work_keys_str_mv	AT saideelkhamy sparsenonorthogonalfrequencydivisionmultiplexingforsecuretransmissionoverbroadcastchannels AT daliaibrahim sparsenonorthogonalfrequencydivisionmultiplexingforsecuretransmissionoverbroadcastchannels AT karimbanawan sparsenonorthogonalfrequencydivisionmultiplexingforsecuretransmissionoverbroadcastchannels
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Sparse Non-Orthogonal Frequency Division Multiplexing for Secure Transmission Over Broadcast Channels

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