A simple design of IRS-NOMA transmission

Zhiguo Ding, H. Vincent Poor

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

This letter proposes a simple design of intelligent reflecting surface (IRS) assisted non-orthogonal multiple access (NOMA) downlink transmission. In particular, conventional spatial division multiple access (SDMA) is used first at the base station to generate orthogonal beams by using the spatial directions of the near users' channels. Then, IRS-assisted NOMA is used to ensure that additional cell-edge users can also be served on these beams by aligning the cell-edge users' effective channel vectors with the predetermined spatial directions. Both analytical and simulation results are provided to demonstrate the performance of the proposed IRS-NOMA scheme and also study the impact of hardware impairments on IRS-NOMA.

Original languageEnglish (US)
Article number9000593
Pages (from-to)1119-1123
Number of pages5
JournalIEEE Communications Letters
Volume24
Issue number5
DOIs
StatePublished - May 2020

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Keywords

  • Non-orthogonal multiple access (NOMA)
  • diversity order
  • intelligent reflecting surface (IRS)
  • phase shifting design

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