A Simple Design of IRS-NOMA Transmission

Zhiguo Ding; H. Vincent Poor

doi:10.1109/LCOMM.2020.2974196

A Simple Design of IRS-NOMA Transmission

Zhiguo Ding, H. Vincent Poor

EEE - Academic & Research

Princeton University

Research output: Contribution to journal › Article › peer-review

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 language	English
Journal	IEEE Communications Letters
Early online date	17 Feb 2020
DOIs	https://doi.org/10.1109/LCOMM.2020.2974196
Publication status	Published - 1 May 2020

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title = "A Simple Design of IRS-NOMA Transmission",

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{\textquoteright} 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{\textquoteright} 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.",

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AB - 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.

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DO - 10.1109/LCOMM.2020.2974196

M3 - Article

SN - 1089-7798

JO - IEEE Communications Letters

JF - IEEE Communications Letters

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A Simple Design of IRS-NOMA Transmission

Abstract

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