TY - JOUR
T1 - A simple design of IRS-NOMA transmission
AU - Ding, Zhiguo
AU - Vincent Poor, H.
N1 - Funding Information:
Manuscript received November 18, 2019; revised December 20, 2019 and February 3, 2020; accepted February 9, 2020. Date of publication February 17, 2020; date of current version May 8, 2020. Z. Ding’s work was supported by the U.K. EPSRC under Grant EP/P009719/2, and in part by H2020-MSCA-RISE-2015 under Grant 690750. H. V. Poor’s work was supported by the U.S. National Science Foundation under Grant CCF-1908308. The associate editor coordinating the review of this letter and approving it for publication was Q. Wu. (Corresponding author: Zhiguo Ding.) Zhiguo Ding is with the Department of Electrical Engineering, Princeton University, Princeton, NJ 08544 USA, and also with the Department of Electrical and Electronic Engineering, The University of Manchester, Manchester M13 9PL, U.K. (e-mail: [email protected]).
Publisher Copyright:
© 1997-2012 IEEE.
PY - 2020/5
Y1 - 2020/5
N2 - 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.
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.
KW - diversity order
KW - intelligent reflecting surface (IRS)
KW - Non-orthogonal multiple access (NOMA)
KW - phase shifting design
UR - http://www.scopus.com/inward/record.url?scp=85084934529&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2020.2974196
DO - 10.1109/LCOMM.2020.2974196
M3 - Article
AN - SCOPUS:85084934529
SN - 1089-7798
VL - 24
SP - 1119
EP - 1123
JO - IEEE Communications Letters
JF - IEEE Communications Letters
IS - 5
M1 - 9000593
ER -