Outage Performance for Dynamic Power Allocation in Hybrid Non-Orthogonal Multiple Access Systems

Zheng Yang, Zhiguo Ding, Pingzhi Fan, Zheng Ma

Research output: Contribution to journalArticlepeer-review

48 Scopus citations

Abstract

In this letter, we propose a novel dynamic power allocation scheme for hybrid non-orthogonal multiple access (DH-NOMA). The exact expressions for the outage probabilities and their asymptotic approximations at high signal-to-noise ratio are derived in DH-NOMA systems. Both Monte Carlo simulations and analytical results are used to compare the proposed scheme with the existing works, such as NOMA based on fixed power allocation (F-NOMA) and cognitive radio inspired NOMA (CR-NOMA). The provided results demonstrate that the DH-NOMA scheme can always achieve better outage performance than the traditional orthogonal multiple access, and achieve a more balanced tradeoff between the two user individual rates than F-NOMA and CR-NOMA.

Original languageBritish English
Article number7493655
Pages (from-to)1695-1698
Number of pages4
JournalIEEE Communications Letters
Volume20
Issue number8
DOIs
StatePublished - Aug 2016

Keywords

  • Non-orthogonal multiple access
  • outage probability
  • successive interference cancellation

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