Abstract
The conventional nonorthogonal multiple access (NOMA) strategy has secrecy challenge in coordinated multipoint (CoMP) networks. Under the secrecy considerations, this paper focuses on the security‐based NOMA system, which aims to improve the physical layer security issues of conventional NOMA in the coordinated multipoint (NOMA‐CoMP) networks. The secrecy performance of S‐NOMA in CoMP, that is, the secrecy sum‐rate and the secrecy outage probability, is analysed. In contrast to the conventional NOMA (C‐NOMA), the results show that the proposed S‐NOMA outperforms C‐NOMA in terms of the secrecy outage probability and security‐based effective sum‐rate.
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