Amplify-and-forward virtual full-duplex relaying-based cooperative NOMA

• Main Authors: Liau, Qian Yu, Leow, Chee Yen, Ding, Zhiguo
• Format: Article
• Published: Institute of Electrical and Electronics Engineers Inc. 2017
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/81863/; http://dx.doi.org/10.1109/LWC.2017.2785303
• Institution: Universiti Teknologi Malaysia

This letter studies the performance of a virtual full-duplex relaying technique in cooperative non-orthogonal multiple access (NOMA)-based systems. In particular, two half-duplex amplify-and-forward relays imitate the operation of full-duplex relaying in cooperative NOMA systems using the successive relaying (SR) technique, in order to recover the loss of spectral efficiency due to the half-duplex constraint at the relays. The closed-form outage probability of the proposed scheme is derived. The simulation results show that the proposed SR-based cooperative NOMA system with an opportunistic power split factor achieves a lower outage probability and a higher ergodic rate than the existing SR-based orthogonal multiple access system and ideal full duplex relaying-based NOMA systems.