Delay Minimization for NOMA-MEC Offloading

Zhiguo Ding, Derrick Wing Kwan Ng, Robert Schober, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

149 Scopus citations


This letter considers the minimization of the offloading delay for nonorthogonal multiple access assisted mobile edge computing (NOMA-MEC). By transforming the delay minimization problem into a form of fractional programming, two iterative algorithms based on, respectively, Dinkelbach's method and Newton's method are proposed. The optimality of both methods is proved and their convergence is compared. Furthermore, criteria for choosing between three possible modes, namely orthogonal multiple access, pure NOMA, and hybrid NOMA, for MEC offloading are established.

Original languageEnglish (US)
Article number8492422
Pages (from-to)1875-1879
Number of pages5
JournalIEEE Signal Processing Letters
Issue number12
StatePublished - Dec 2018

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Applied Mathematics
  • Electrical and Electronic Engineering


  • Non-orthogonal multiple access (NOMA) and mobile edge computing (MEC) offloading


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