Relay Selection - Aware Non-Orthogonal Multiple Access Networks: Direct and Relaying Mode

(E-pub Ahead of Print)

Author(s): Dinh-Thuan Do*, Minh-Sang V. Nguyen.

Journal Name: Recent Advances in Electrical & Electronic Engineering
Formerly Recent Patents on Electrical & Electronic Engineering

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Objective: In this paper, decode-and-forward (DF) mode is deployed in the relay selection (RS) scheme to provide better performance in cooperative downlink non-orthogonal multiple access (NOMA) networks. In particular, evaluation regarding the impact of the number of multiple relays on outage performance is presented. Methods: As main parameter affecting cooperative NOMA performance, we consider the scenario of the fixed power allocations and the varying number of relays. In addition, the expressions of outage probabilities are the main metric to examine separated NOMA users. By matching related results between simulation and analytical methods, the exactness of derived formula can be verified. Results: The intuitive main results show that in such cooperative NOMA networks, the higher the number of relays equipped, the better the system performance can be achieved.

Keywords: non-orthogonal multiple access, relay selection , outage probability.

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Article Details

(E-pub Ahead of Print)
DOI: 10.2174/2352096512666181130164755
Price: $95