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Channel-Aware Multilevel NOMA-ALOHA Game
Shanyu Jin(김선옥),Dongwoo Kim(김동우) 한국통신학회 2021 한국통신학회 학술대회논문집 Vol.2021 No.2
Non-orthogonal Multiple Access (NOMA) has become one of the most potential multiple access methods in future communication systems because of its ability to significantly improve the spectral efficiency. In this paper, we provide a multiuser user power allocation when applying the NOMA technique to ALOHA random access in fading environments. Considering the non-cooperative behavior of the ALOHA network, we set up a NOMA-ALOHA game to determine the power allocation. We use the power efficiency of each user with the instantaneous channel information to establish the payoff function and find a Nash equilibrium. The simulation result shows that the proposed game can reduce user conflicts and improve the utilization of network resources.