Wei, Z;
Zhu, X;
Sun, S;
Wang, J;
Hanzo, L;
(2018)
Energy-efficient full-duplex cooperative nonorthogonal multiple access.
IEEE Transactions on Vehicular Technology
, 67
(10)
pp. 10123-10128.
10.1109/TVT.2018.2864545.
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Abstract
The full-duplex (FD) cooperative nonorthogonal multiple access (NOMA) achieves a superior throughput over the conventional half-duplex (HD) cooperative NOMA, wherein the strong users (SUs) with good channel conditions can act as an FD relay node for the weak users with poor channel conditions. However, the energy efficiency (EE) of a cooperative NOMA may be degraded due to the 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 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 existing cooperative NOMA literature. A low-complexity algorithm is proposed for maximizing the system's EE while guaranteeing a successful SIC operation. Our numerical results show that the proposed algorithm achieves both a higher EE and throughput over the existing HD cooperative NOMA and nonadaptive FD cooperative NOMA. More importantly, the proposed scheme guarantees a successful SIC operation at the SUs.
| Type: | Article |
|---|---|
| Title: | Energy-efficient full-duplex cooperative nonorthogonal multiple access |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/TVT.2018.2864545 |
| Publisher version: | http://doi.org/10.1109/TVT.2018.2864545 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | NOMA,Interference,Throughput,Signal to noise ratio,Silicon carbide,Power demand,Relays |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10061125 |
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