Joint resource optimization in spectrum sharing decode and forward relaying networks.

This paper proposes an adaptive power allocation and subcarrier pairing algorithm for orthogonal frequency division multiplexing based decode and forward cognitive radio networks, where primary and secondary users achieve spectrum sharing in the same frequency band. The secondary network tries to ma...

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Autor principal:	Dong Qin
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6276638fd5f64a3f921e2638ecfe1c00
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spelling	oai:doaj.org-article:6276638fd5f64a3f921e2638ecfe1c002021-12-02T20:04:06ZJoint resource optimization in spectrum sharing decode and forward relaying networks.1932-620310.1371/journal.pone.0251509https://doaj.org/article/6276638fd5f64a3f921e2638ecfe1c002021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0251509https://doaj.org/toc/1932-6203This paper proposes an adaptive power allocation and subcarrier pairing algorithm for orthogonal frequency division multiplexing based decode and forward cognitive radio networks, where primary and secondary users achieve spectrum sharing in the same frequency band. The secondary network tries to maximize its sum rate while ensuring that the interference introduced to the primary network is below an acceptable level. Although similar problems have been investigated in traditional cooperative communication networks, it's still an open issue in cognitive radio networks due to interference thresholds. The power consumed by the secondary network is not only limited by its own power peak, but also by the interference threshold of the primary user. Our proposed algorithm not only allocates power and pairs subcarriers reasonably, but also specifies the conditions under which the relaying link is superior to the direct transmission. Simulation results show that the sum rate of the proposed algorithm exceeds other methods and obtains a significant performance gain.Dong QinPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 5, p e0251509 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Dong Qin Joint resource optimization in spectrum sharing decode and forward relaying networks.
description	This paper proposes an adaptive power allocation and subcarrier pairing algorithm for orthogonal frequency division multiplexing based decode and forward cognitive radio networks, where primary and secondary users achieve spectrum sharing in the same frequency band. The secondary network tries to maximize its sum rate while ensuring that the interference introduced to the primary network is below an acceptable level. Although similar problems have been investigated in traditional cooperative communication networks, it's still an open issue in cognitive radio networks due to interference thresholds. The power consumed by the secondary network is not only limited by its own power peak, but also by the interference threshold of the primary user. Our proposed algorithm not only allocates power and pairs subcarriers reasonably, but also specifies the conditions under which the relaying link is superior to the direct transmission. Simulation results show that the sum rate of the proposed algorithm exceeds other methods and obtains a significant performance gain.
format	article
author	Dong Qin
author_facet	Dong Qin
author_sort	Dong Qin
title	Joint resource optimization in spectrum sharing decode and forward relaying networks.
title_short	Joint resource optimization in spectrum sharing decode and forward relaying networks.
title_full	Joint resource optimization in spectrum sharing decode and forward relaying networks.
title_fullStr	Joint resource optimization in spectrum sharing decode and forward relaying networks.
title_full_unstemmed	Joint resource optimization in spectrum sharing decode and forward relaying networks.
title_sort	joint resource optimization in spectrum sharing decode and forward relaying networks.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6276638fd5f64a3f921e2638ecfe1c00
work_keys_str_mv	AT dongqin jointresourceoptimizationinspectrumsharingdecodeandforwardrelayingnetworks
_version_	1718375605437726720

Joint resource optimization in spectrum sharing decode and forward relaying networks.

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