TY - GEN
T1 - Intelligent Reflecting Surfaces and Classical Relays
T2 - 2021 IEEE Globecom Workshops, GC Wkshps 2021
AU - Kan, Te Yi
AU - Chang, Ronald Y.
AU - Chien, Feng-Tsun
N1 - Publisher Copyright:
© 2021 IEEE.
PY - 2021
Y1 - 2021
N2 - This paper investigates a multiuser downlink communication system with coexisting intelligent reflecting surface (IRS) and classical half-duplex decode-and-forward (DF) relay. In this system, the IRS and the DF relay interact with each other and assist transmission simultaneously. In particular, active beamforming at the base station (BS) and at the DF relay, and passive beamforming at the IRS, are jointly designed to maximize the sum-rate of all users. The sum-rate maximization problem is nonconvex due to the coupled beamforming vectors. We propose an alternating optimization (AO) based algorithm to tackle this complex co-design problem. Numerical validation and discussion on the superiority of the coexistence system and the tradeoffs therein are presented.
AB - This paper investigates a multiuser downlink communication system with coexisting intelligent reflecting surface (IRS) and classical half-duplex decode-and-forward (DF) relay. In this system, the IRS and the DF relay interact with each other and assist transmission simultaneously. In particular, active beamforming at the base station (BS) and at the DF relay, and passive beamforming at the IRS, are jointly designed to maximize the sum-rate of all users. The sum-rate maximization problem is nonconvex due to the coupled beamforming vectors. We propose an alternating optimization (AO) based algorithm to tackle this complex co-design problem. Numerical validation and discussion on the superiority of the coexistence system and the tradeoffs therein are presented.
UR - http://www.scopus.com/inward/record.url?scp=85126109245&partnerID=8YFLogxK
U2 - 10.1109/GCWkshps52748.2021.9682048
DO - 10.1109/GCWkshps52748.2021.9682048
M3 - Conference contribution
AN - SCOPUS:85126109245
T3 - 2021 IEEE Globecom Workshops, GC Wkshps 2021 - Proceedings
BT - 2021 IEEE Globecom Workshops, GC Wkshps 2021 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 7 December 2021 through 11 December 2021
ER -