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Energy efficient full-duplex cooperative non-orthogonal multiple access

Energy efficient full-duplex cooperative non-orthogonal multiple access
Energy efficient full-duplex cooperative non-orthogonal multiple access

Full-duplex (FD) cooperative non-orthogonal multiple access (NOMA) achieves superior throughput over conventional half-duplex (HD) cooperative NOMA, where the strong users (SUs) with good channel conditions can act as an FD relay node for the weak users (WUs) with poor channel conditions. However, the energy efficiency (EE) of cooperative NOMA may be degraded due to additional power consumption incurred at the SUs. We are therefore motivated to investigate the EE maximization problem of an FD cooperative NOMA system. More importantly, we investigate the “signal-to-inference-noise ratio (SINR) gap reversal” problem of cooperative NOMA systems, which imposes successive interference cancellation (SIC) performance degradation at the SUs. This problem has not been documented in the exiting cooperative NOMA literature. A low-complexity algorithm is proposed for maximizing the system's EE while guaranteeing successful SIC operation. Our numerical results show that the proposed algorithm achieves both higher EE and throughput over the existing HD cooperative NOMA and non-adaptive FD cooperative NOMA. More importantly, the proposed scheme guarantees a successful SIC operation at the SUs.

Cooperative non-orthogonal multiple access, energy efficiency, full-duplex
0018-9545
Wei, Zhongxiang
94bfc1c5-4c05-4c8c-b66d-2582f5c3ee57
Zhu, Xu
ec690b62-344c-4fe4-be5d-1894a06d4ede
Sun, Sumei
dc8a2bd8-c57e-4ece-a45b-c48a7c7d1ed5
Wang, Jingjing
0b73e219-9dd7-44ec-a260-a53ee004746f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Wei, Zhongxiang
94bfc1c5-4c05-4c8c-b66d-2582f5c3ee57
Zhu, Xu
ec690b62-344c-4fe4-be5d-1894a06d4ede
Sun, Sumei
dc8a2bd8-c57e-4ece-a45b-c48a7c7d1ed5
Wang, Jingjing
0b73e219-9dd7-44ec-a260-a53ee004746f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Wei, Zhongxiang, Zhu, Xu, Sun, Sumei, Wang, Jingjing and Hanzo, Lajos (2018) Energy efficient full-duplex cooperative non-orthogonal multiple access. IEEE Transactions on Vehicular Technology. (doi:10.1109/TVT.2018.2864545).

Record type: Article

Abstract

Full-duplex (FD) cooperative non-orthogonal multiple access (NOMA) achieves superior throughput over conventional half-duplex (HD) cooperative NOMA, where the strong users (SUs) with good channel conditions can act as an FD relay node for the weak users (WUs) with poor channel conditions. However, the energy efficiency (EE) of cooperative NOMA may be degraded due to additional power consumption incurred at the SUs. We are therefore motivated to investigate the EE maximization problem of an FD cooperative NOMA system. More importantly, we investigate the “signal-to-inference-noise ratio (SINR) gap reversal” problem of cooperative NOMA systems, which imposes successive interference cancellation (SIC) performance degradation at the SUs. This problem has not been documented in the exiting cooperative NOMA literature. A low-complexity algorithm is proposed for maximizing the system's EE while guaranteeing successful SIC operation. Our numerical results show that the proposed algorithm achieves both higher EE and throughput over the existing HD cooperative NOMA and non-adaptive FD cooperative NOMA. More importantly, the proposed scheme guarantees a successful SIC operation at the SUs.

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Energy Efficient Full-Duplex Cooperative Non-Orthogonal Multiple Access - Accepted Manuscript
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More information

Accepted/In Press date: 8 August 2018
e-pub ahead of print date: 9 August 2018
Keywords: Cooperative non-orthogonal multiple access, energy efficiency, full-duplex

Identifiers

Local EPrints ID: 423215
URI: http://eprints.soton.ac.uk/id/eprint/423215
ISSN: 0018-9545
PURE UUID: c76727e8-6fa3-4c27-858e-093b4e63b089
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 19 Sep 2018 16:30
Last modified: 23 Jul 2022 01:33

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Contributors

Author: Zhongxiang Wei
Author: Xu Zhu
Author: Sumei Sun
Author: Jingjing Wang
Author: Lajos Hanzo ORCID iD

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