Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors

Abstract The secrecy rate of two‐way untrusted relay networks with imperfect channel state information based on SWIPT is investigated when multiple relays harvest energy from two sources. Despite assisting in information forwarding, the relays are considered untrusted in that they might attempt to e...

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Autores principales:	Dayong Yang, Mo Zhang, Biao Wan, Nanrun Zhou
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2021
Materias:	Telecommunication TK5101-6720
Acceso en línea:	https://doaj.org/article/73f15551b0e442959c8041a36aee552a
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spelling	oai:doaj.org-article:73f15551b0e442959c8041a36aee552a2021-12-01T07:07:54ZSecrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors1751-86361751-862810.1049/cmu2.12296https://doaj.org/article/73f15551b0e442959c8041a36aee552a2021-12-01T00:00:00Zhttps://doi.org/10.1049/cmu2.12296https://doaj.org/toc/1751-8628https://doaj.org/toc/1751-8636Abstract The secrecy rate of two‐way untrusted relay networks with imperfect channel state information based on SWIPT is investigated when multiple relays harvest energy from two sources. Despite assisting in information forwarding, the relays are considered untrusted in that they might attempt to eavesdrop on confidential information. To interfere with eavesdropping by untrusted relays, sources‐based friendly cooperative jamming is introduced. A joint power allocation and time switching strategy has been studied to maximize the sum secrecy rate of the system under total block transmission duration and power constraints. The genetic algorithm (GA) is introduced to optimize the proposed joint power allocation and time switching (JPTs) scheme. In addition, two suboptimal schemes are proposed: the power allocation and time switching scheme for individual power constraints and the power allocation scheme for equal time allocation. Simulation results demonstrate that the proposed joint power allocation and time switching strategy performs better in contributing to the total secrecy rate of the system.Dayong YangMo ZhangBiao WanNanrun ZhouWileyarticleTelecommunicationTK5101-6720ENIET Communications, Vol 15, Iss 20, Pp 2564-2574 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Telecommunication TK5101-6720
spellingShingle	Telecommunication TK5101-6720 Dayong Yang Mo Zhang Biao Wan Nanrun Zhou Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors
description	Abstract The secrecy rate of two‐way untrusted relay networks with imperfect channel state information based on SWIPT is investigated when multiple relays harvest energy from two sources. Despite assisting in information forwarding, the relays are considered untrusted in that they might attempt to eavesdrop on confidential information. To interfere with eavesdropping by untrusted relays, sources‐based friendly cooperative jamming is introduced. A joint power allocation and time switching strategy has been studied to maximize the sum secrecy rate of the system under total block transmission duration and power constraints. The genetic algorithm (GA) is introduced to optimize the proposed joint power allocation and time switching (JPTs) scheme. In addition, two suboptimal schemes are proposed: the power allocation and time switching scheme for individual power constraints and the power allocation scheme for equal time allocation. Simulation results demonstrate that the proposed joint power allocation and time switching strategy performs better in contributing to the total secrecy rate of the system.
format	article
author	Dayong Yang Mo Zhang Biao Wan Nanrun Zhou
author_facet	Dayong Yang Mo Zhang Biao Wan Nanrun Zhou
author_sort	Dayong Yang
title	Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors
title_short	Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors
title_full	Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors
title_fullStr	Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors
title_full_unstemmed	Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors
title_sort	secrecy rate optimization for swipt in two‐way relay networks with multiple untrusted relays and channel estimation errors
publisher	Wiley
publishDate	2021
url	https://doaj.org/article/73f15551b0e442959c8041a36aee552a
work_keys_str_mv	AT dayongyang secrecyrateoptimizationforswiptintwowayrelaynetworkswithmultipleuntrustedrelaysandchannelestimationerrors AT mozhang secrecyrateoptimizationforswiptintwowayrelaynetworkswithmultipleuntrustedrelaysandchannelestimationerrors AT biaowan secrecyrateoptimizationforswiptintwowayrelaynetworkswithmultipleuntrustedrelaysandchannelestimationerrors AT nanrunzhou secrecyrateoptimizationforswiptintwowayrelaynetworkswithmultipleuntrustedrelaysandchannelestimationerrors
_version_	1718405418606133248

Secrecy rate optimization for SWIPT in two‐way relay networks with multiple untrusted relays and channel estimation errors

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