A Simple Design of IRS-NOMA Transmission

被引：359

作者：

Ding, Zhiguo ^{[1
,2
]}

Vincent Poor, H. ^{[1
]}

机构：

[1] Princeton Univ, Dept Elect Engn, Princeton, NJ 08544 USA

[2] Univ Manchester, Dept Elect & Elect Engn, Manchester M13 9PL, Lancs, England

来源：

IEEE COMMUNICATIONS LETTERS | 2020年 / 24卷 / 05期

基金：

欧盟地平线“2020”; 美国国家科学基金会; 英国工程与自然科学研究理事会;

关键词：

NOMA; Signal to noise ratio; Array signal processing; Interference; Multiaccess communication; Base stations; Hardware; Non-orthogonal multiple access (NOMA); intelligent reflecting surface (IRS); phase shifting design; diversity order;

D O I：

10.1109/LCOMM.2020.2974196

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

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.

引用

页码：1119 / 1123

页数：5

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