Energy-efficient transmission design in cooperative relaying systems using NOMA

Liu, Q; Lv, T; Lin, Z

Energy-efficient transmission design in cooperative relaying systems using NOMA

Liu, Q Lv, T Lin, Z

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Publication Type:: Journal Article
Citation:: IEEE Communications Letters, 2018, 22 (3), pp. 594 - 597
Issue Date:: 2018-03-01

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Field	Value	Language
dc.contributor.author	Liu, Q	en_US
dc.contributor.author	Lv, T	en_US
dc.contributor.author	Lin, Z https://orcid.org/0000-0001-5941-2163	en_US
dc.date.issued	2018-03-01	en_US
dc.identifier.citation	IEEE Communications Letters, 2018, 22 (3), pp. 594 - 597	en_US
dc.identifier.issn	1089-7798	en_US
dc.identifier.uri	http://hdl.handle.net/10453/131777
dc.description.abstract	© 1997-2012 IEEE. In this letter, we investigate the optimal power allocation scheme in a cooperative relaying system using non-orthogonal multiple access from the perspective of global energy efficiency (GEE), where a source node communicates with two destination nodes simultaneously via a decode-and-forward relay. We optimize the transmit power at the source node and relay node jointly under quality of service requirements. It is proved that the optimal GEE is strictly quasi-concave with regard to the transmit power at the source node. Based on this quasi-concavity, we decompose the original nonconvex problem into a bilayer optimization problem and obtain the optimal power allocation solution. Simulation results show the effectiveness of our theoretical findings.	en_US
dc.relation.ispartof	IEEE Communications Letters	en_US
dc.relation.isbasedon	10.1109/LCOMM.2018.2790379	en_US
dc.subject.classification	Networking & Telecommunications	en_US
dc.title	Energy-efficient transmission design in cooperative relaying systems using NOMA	en_US
dc.type	Journal Article
utslib.citation.volume	3	en_US
utslib.citation.volume	22	en_US
utslib.for	0805 Distributed Computing	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	1005 Communications Technologies	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.issue	3	en_US
pubs.publication-status	Published	en_US
pubs.volume	22	en_US

Abstract:

© 1997-2012 IEEE. In this letter, we investigate the optimal power allocation scheme in a cooperative relaying system using non-orthogonal multiple access from the perspective of global energy efficiency (GEE), where a source node communicates with two destination nodes simultaneously via a decode-and-forward relay. We optimize the transmit power at the source node and relay node jointly under quality of service requirements. It is proved that the optimal GEE is strictly quasi-concave with regard to the transmit power at the source node. Based on this quasi-concavity, we decompose the original nonconvex problem into a bilayer optimization problem and obtain the optimal power allocation solution. Simulation results show the effectiveness of our theoretical findings.

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http://hdl.handle.net/10453/131777