Outage Performance of NOMA-Based Hybrid Satellite-Terrestrial Relay Networks

Xiaojuan Yan, Hailin Xiao, Cheng-Xiang Wang, Kang An

Research output: Contribution to journalArticlepeer-review

85 Citations (Scopus)


In this letter, we investigate the outage probability (OP) of amplify-and-forward (AF) hybrid satellite-terrestrial relay networks with a non-orthogonal multiple access (NOMA) scheme. By assuming that a single antenna satellite communicates with multiple multi-antenna users simultaneously through the help of a single antenna relay and the NOMA scheme, we first derive the closed-form OP expressions for each NOMA user. Then, asymptotic OP expressions at the high signal-to-noise ratio (SNR) regime are also obtained to evaluate the achievable diversity order and coding gain. Finally, simulations are provided to the validity of theoretical results, the superiority of introducing the NOMA scheme in satellite-terrestrial relay networks, and the effect of key parameters on the performance of NOMA users.

Original languageEnglish
Pages (from-to)538-541
Number of pages4
JournalIEEE Wireless Communications Letters
Issue number4
Publication statusPublished - Aug 2018


  • Hybrid satellite-terrestrial relay networks
  • Interference
  • NOMA
  • non-orthogonal multiple access
  • outage probability.
  • Power system reliability
  • Probability
  • Relay networks (telecommunications)
  • Satellites
  • Signal to noise ratio

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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