Weighted Sum Rate Optimization for STAR-RIS-Assisted MIMO System

Hehao Niu; Zheng Chu; Fuhui Zhou; Pei Xiao; Naofal Al-Dhahir

doi:10.1109/TVT.2021.3131568

Weighted Sum Rate Optimization for STAR-RIS-Assisted MIMO System

Hehao Niu, Zheng Chu, Fuhui Zhou, Pei Xiao, Naofal Al-Dhahir

Research output: Journal Publication › Article › peer-review

42 Citations (Scopus)

Abstract

In this work, we study a simultaneous transmitting and reflecting reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output network. For the system under consideration, we maximize the weighted sum rate, mainly based on the energy splitting (ES) scheme. To tackle this optimization problem, a sub-optimal block coordinate descent (BCD) algorithm is proposed to design the precoding matrices and the transmitting and reflecting coefficients (TRCs) in an alternate manner. Specifically, the precoding matrices are solved using the Lagrange dual method, while the TRCs are obtained using the constrained concave-convex procedure (CCCP). The simulation results reveal that: 1) Simultaneous transmitting and reflecting RIS (STAR-RIS) can achieve better performance than conventional reflecting/transmiting-only RIS; 2) In unicast communication, time switching (TS) scheme outperforms the ES and mode selection (MS) schemes, while in broadcast communication, ES scheme outperforms the TS and MS schemes.

Original language	English
Pages (from-to)	2122-2127
Number of pages	6
Journal	IEEE Transactions on Vehicular Technology
Volume	71
Issue number	2
DOIs	https://doi.org/10.1109/TVT.2021.3131568
Publication status	Published - 1 Feb 2022
Externally published	Yes

Keywords

Reconfigurable intelligent surfaces
block coordinate descent
constrained concave-convex procedure
simultaneously transmitting and reflecting

ASJC Scopus subject areas

Aerospace Engineering
Electrical and Electronic Engineering
Computer Networks and Communications
Automotive Engineering

Access to Document

10.1109/TVT.2021.3131568

Cite this

@article{fed84610454b479a805967c937c9f1b1,

title = "Weighted Sum Rate Optimization for STAR-RIS-Assisted MIMO System",

abstract = "In this work, we study a simultaneous transmitting and reflecting reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output network. For the system under consideration, we maximize the weighted sum rate, mainly based on the energy splitting (ES) scheme. To tackle this optimization problem, a sub-optimal block coordinate descent (BCD) algorithm is proposed to design the precoding matrices and the transmitting and reflecting coefficients (TRCs) in an alternate manner. Specifically, the precoding matrices are solved using the Lagrange dual method, while the TRCs are obtained using the constrained concave-convex procedure (CCCP). The simulation results reveal that: 1) Simultaneous transmitting and reflecting RIS (STAR-RIS) can achieve better performance than conventional reflecting/transmiting-only RIS; 2) In unicast communication, time switching (TS) scheme outperforms the ES and mode selection (MS) schemes, while in broadcast communication, ES scheme outperforms the TS and MS schemes.",

keywords = "Reconfigurable intelligent surfaces, block coordinate descent, constrained concave-convex procedure, simultaneously transmitting and reflecting",

author = "Hehao Niu and Zheng Chu and Fuhui Zhou and Pei Xiao and Naofal Al-Dhahir",

note = "Publisher Copyright: {\textcopyright} 1967-2012 IEEE.",

year = "2022",

month = feb,

day = "1",

doi = "10.1109/TVT.2021.3131568",

language = "English",

volume = "71",

pages = "2122--2127",

journal = "IEEE Transactions on Vehicular Technology",

issn = "0018-9545",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

number = "2",

}

TY - JOUR

T1 - Weighted Sum Rate Optimization for STAR-RIS-Assisted MIMO System

AU - Niu, Hehao

AU - Chu, Zheng

AU - Zhou, Fuhui

AU - Xiao, Pei

AU - Al-Dhahir, Naofal

PY - 2022/2/1

Y1 - 2022/2/1

N2 - In this work, we study a simultaneous transmitting and reflecting reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output network. For the system under consideration, we maximize the weighted sum rate, mainly based on the energy splitting (ES) scheme. To tackle this optimization problem, a sub-optimal block coordinate descent (BCD) algorithm is proposed to design the precoding matrices and the transmitting and reflecting coefficients (TRCs) in an alternate manner. Specifically, the precoding matrices are solved using the Lagrange dual method, while the TRCs are obtained using the constrained concave-convex procedure (CCCP). The simulation results reveal that: 1) Simultaneous transmitting and reflecting RIS (STAR-RIS) can achieve better performance than conventional reflecting/transmiting-only RIS; 2) In unicast communication, time switching (TS) scheme outperforms the ES and mode selection (MS) schemes, while in broadcast communication, ES scheme outperforms the TS and MS schemes.

AB - In this work, we study a simultaneous transmitting and reflecting reconfigurable intelligent surface (RIS)-assisted multiple-input multiple-output network. For the system under consideration, we maximize the weighted sum rate, mainly based on the energy splitting (ES) scheme. To tackle this optimization problem, a sub-optimal block coordinate descent (BCD) algorithm is proposed to design the precoding matrices and the transmitting and reflecting coefficients (TRCs) in an alternate manner. Specifically, the precoding matrices are solved using the Lagrange dual method, while the TRCs are obtained using the constrained concave-convex procedure (CCCP). The simulation results reveal that: 1) Simultaneous transmitting and reflecting RIS (STAR-RIS) can achieve better performance than conventional reflecting/transmiting-only RIS; 2) In unicast communication, time switching (TS) scheme outperforms the ES and mode selection (MS) schemes, while in broadcast communication, ES scheme outperforms the TS and MS schemes.

KW - Reconfigurable intelligent surfaces

KW - block coordinate descent

KW - constrained concave-convex procedure

KW - simultaneously transmitting and reflecting

UR - http://www.scopus.com/inward/record.url?scp=85120579290&partnerID=8YFLogxK

U2 - 10.1109/TVT.2021.3131568

DO - 10.1109/TVT.2021.3131568

M3 - Article

AN - SCOPUS:85120579290

SN - 0018-9545

VL - 71

SP - 2122

EP - 2127

JO - IEEE Transactions on Vehicular Technology

JF - IEEE Transactions on Vehicular Technology

IS - 2

ER -

Weighted Sum Rate Optimization for STAR-RIS-Assisted MIMO System

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this