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Wireless Communications and Mobile Computing
Volume 2018, Article ID 8921895, 6 pages
https://doi.org/10.1155/2018/8921895
Research Article

On the Performance of Security-Based Nonorthogonal Multiple Access in Coordinated Multipoint Networks

1Fujian Key Laboratory of Communication Network and Information Processing, School of Opto-Electronic and Communication Engineering, Xiamen University of Technology, Xiamen, China
2School of Information Engineering, Zhengzhou University, Zhengzhou, China

Correspondence should be addressed to Yue Tian; moc.kooltuo@tumx.nait.euy

Received 10 December 2017; Revised 12 February 2018; Accepted 4 March 2018; Published 4 April 2018

Academic Editor: Imran S. Ansari

Copyright © 2018 Yue Tian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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.