Outage Probability Analysis of Non-Orthogonal Multiple Access in Cloud Radio Access Networks

Xiang Gu, Xiaodong Ji, Zhiguo Ding, Wenbin Wu, Mugen Peng

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

To improve system capacity and spectral efficiency, as well as support more connections in cloud radio access networks (C-RANs), the application of non-orthogonal multiple access (NOMA), a promising technique in the physical layer, is considered in this letter. The stochastic geometry is used to obtain the outage probability of NOMA-based downlink C-RAN, in which the remote radio heads are uniformly distributed and serve two paired users simultaneously. A closed-form approximation for the outage probability is derived, and Monte Carlo simulations are provided to validate the accuracy of the theoretical analysis. Compared with conventional multiple access techniques, both the obtained analytical and simulation results demonstrate that the proposed NOMA scheme can offer better spectral efficiency and user fairness in C-RANs.

Original languageBritish English
Article number8063963
Pages (from-to)149-152
Number of pages4
JournalIEEE Communications Letters
Volume22
Issue number1
DOIs
StatePublished - Jan 2018

Keywords

  • Cloud radio access networks (C-RANs)
  • non-orthogonal multiple access (NOMA)
  • outage probability

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