Title: Throughput optimisation of multi-antennas CRN-NOMA with energy harvesting and adaptive transmit power

Authors: Raed I. Alhamad; Hatem Boujemaa

Addresses: Department of Computer Science, College of Computation and Informatics, Saudi Electronic University, 11673, Saudi Arabia ' COSIM Lab., 2083, Tunisia

Abstract: In this paper, we optimise the throughput of cooperative non orthogonal multiple access (NOMA) for cognitive radio networks (CRN). The secondary nodes harvest energy using the received signal on multiple antennas from node A. Secondary nodes adapt their power to generate interference at Primary Destination (PD) less than threshold I. The source transmits a combination of symbols dedicated to near and far users. The signal is decoded by a relay node R that regenerates it and transmits it to near and far secondary users. We optimise both harvesting duration and power allocation to near and far users to maximise the secondary total throughput. We also suggest two techniques for users' ranking using average or instantaneous channel gains.

Keywords: NOMA; non orthogonal multiple access; energy harvesting; adaptive transmit power; optimal harvesting duration; OPA; optimal power allocation.

DOI: 10.1504/IJSNET.2020.108559

International Journal of Sensor Networks, 2020 Vol.33 No.3, pp.168 - 178

Received: 04 Dec 2019
Accepted: 12 Jan 2020

Published online: 17 Jul 2020 *

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