Sum-Rate Maximization Based Relay Selection for Cooperative NOMA over Nakagami-m Fading

Li, Y. and Li, T. and Li, Yongzhao and Ni, Q. and Zarakovitis, C. (2020) Sum-Rate Maximization Based Relay Selection for Cooperative NOMA over Nakagami-m Fading. IEEE Transactions on Vehicular Technology, 69 (11). pp. 13985-13989. ISSN 0018-9545

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Abstract

This paper proposes a new sum-rate maximization based relay selection (RS) scheme for cooperative non-orthogonal multiple access (NOMA) networks over Nakagami-$m$ fading, where one base station communicates with two mobile users by means of multiple relays. The outage probability of the proposed scheme is derived in a closed-form expression, and the diversity order is also obtained. Simulation results are shown to compare the outage performance of the proposed scheme with that of the existing RS schemes.