Tang, J;
Song, Y;
Lin, C;
Feng, W;
Chen, Z;
Zhang, X;
Wong, KK;
(2021)
Energy Efficiency Optimization for Plane Spiral OAM Mode-Group Based MIMO-NOMA Systems.
In:
Artificial Intelligence for Communications and Networks. AICON 2021.
(pp. pp. 177-188).
Springer: Cham, Switzerland.
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Abstract
In this paper, a plane spiral orbital angular momentum (PS-OAM) mode-groups (MGs) based multi-user multiple-input-multiple-out-put (MIMO) non-orthogonal multiple access (NOMA) system is studied, where a base station (BS) transmits date to multiple users by utilizing the generated PSOAM beams. For such scenario, the interference between users in different PSOAM-mode groups can be avoided, which leads to a significant performance enhancement. We aim to maximize the energy efficiency (EE) of the system subject to the total transmission power constraint and the minimum rate constraint. This design problem is non-convex by optimizing the power allocation, and thus is quite difficult to tackle directly. To solve this issue, we present a bisection-based power allocation algorithm where the bisection method is exploited in the outer layer to obtain the optimal EE and a power distributed iterative algorithm is exploited in the inner layer to optimize the transmit power. Simulation results validate the theoretical findings and demonstrate the proposed system can achieve better performance than the traditional multi-user MIMO system in terms of EE.
| Type: | Proceedings paper |
|---|---|
| Title: | Energy Efficiency Optimization for Plane Spiral OAM Mode-Group Based MIMO-NOMA Systems |
| Event: | AICON 2021: Artificial Intelligence for Communications and Networks |
| ISBN-13: | 9783030901950 |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/978-3-030-90196-7_16 |
| Publisher version: | https://doi.org/10.1007/978-3-030-90196-7_16 |
| 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: | Energy efficiency (EE), Plane spiral orbital angular momentum (PSOAM), Non-orthogonal multiple access (NOMA) |
| 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/10140338 |
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