Unveiling the Importance of SIC in NOMA Systems - Part II: New Results and Future Directions

Zhiguo Ding, Robert Schober, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

39 Scopus citations

Abstract

In most existing works on non-orthogonal multiple access (NOMA), the decoding order of successive interference cancellation (SIC) is prefixed and based on either the users' channel conditions or their quality of service (QoS) requirements. A recent work on NOMA assisted semi-grant-free transmission showed that the use of a more sophisticated hybrid SIC scheme can yield significant performance improvements. This letter illustrates how the concept of hybrid SIC can be generalized and applied to different NOMA applications. We first use NOMA assisted mobile edge computing (MEC) as an example to illustrate the benefits of hybrid SIC, where new results for offloading energy minimization are presented. Then, future directions for generalizing hybrid SIC with adaptive decoding order selection as well as its promising applications are discussed.

Original languageBritish English
Article number9151208
Pages (from-to)2378-2382
Number of pages5
JournalIEEE Communications Letters
Volume24
Issue number11
DOIs
StatePublished - Nov 2020

Keywords

  • hybrid successive interference cancellation (SIC)
  • mobile edge computing (MEC)
  • Non-orthogonal multiple access (NOMA)

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