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TIIS (한국인터넷정보학회)

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한글제목(Korean Title) Performance Analysis and Power llocation for NOMA-assisted Cloud Radio ccess Network
영문제목(English Title) Performance Analysis and Power llocation for NOMA-assisted Cloud Radio ccess Network
저자(Author) Fangcheng Xu   Xiangbin Yu   Weiye Xu   Jiali Cai  
원문수록처(Citation) VOL 15 NO. 03 PP. 1174 ~ 1192 (2021. 03)
한글내용
(Korean Abstract)
영문내용
(English Abstract)
With the assistance of non-orthogonal multiple access (NOMA), the spectrum efficiency and the number of users in cloud radio access network (CRAN) can be greatly improved. In this paper, the system performance of NOMA-assisted CRAN is investigated. Specially, the outage probability (OP) and ergodic sum rate (ESR), are derived for performance evaluation of the system, respectively. Based on this, by minimizing the OP of the system, a suboptimal power allocation (PA) scheme with closed-form PA coefficients is proposed. Numerical simulations validate the accuracy of the theoretical results, where the derived OP has more accuracy than the existing one. Moreover, the developed PA scheme has superior performance over the conventional fixed PA scheme but has smaller performance loss than the optimal PA scheme using the exhaustive search method.
키워드(Keyword) Cloud Radio Access Networks   Ergodic Sum Rate   Non-Orthogonal Multiple Access   Power Allocation   Outage Probability  
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