On the performance of non-orthogonal multiple access in 5G systems with randomly deployed users

Zhiguo Ding, Zheng Yang, Pingzhi Fan, H. Vincent Poor

Research output: Contribution to journalArticle

1040 Scopus citations

Abstract

In this letter, the performance of non-orthogonal multiple access (NOMA) is investigated in a cellular downlink scenario with randomly deployed users. The developed analytical results show that NOMA can achieve superior performance in terms of ergodic sum rates; however, the outage performance of NOMA depends critically on the choices of the users' targeted data rates and allocated power. In particular, a wrong choice of the targeted data rates and allocated power can lead to a situation in which the user's outage probability is always one, i.e. the user's targeted quality of service will never be met.

Original languageEnglish (US)
Article number6868214
Pages (from-to)1501-1505
Number of pages5
JournalIEEE Signal Processing Letters
Volume21
Issue number12
DOIs
StatePublished - Dec 2014

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Electrical and Electronic Engineering
  • Applied Mathematics

Keywords

  • 5G communications
  • non-orthogonal multiple access
  • stochastic geometry

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