Multi-IRS Aided Multiuser Communication: Hybrid Deployment and Optimization

Zheng，Beixiong1; You，Changsheng2; Zhang，Rui1

10.1109/IEEECONF53345.2021.9723418

2021

1058-6393

978-1-6654-5829-0

Conference Record - Asilomar Conference on Signals, Systems and Computers

2021-October

100-104

31 Oct.-3 Nov. 2021

Pacific Grove, CA, USA

Intelligent reflecting surface (IRS) has recently emerged as an appealing technique to control the random and time-varying channels in wireless communications. In this paper, we consider a new multi-IRS aided multiuser system, where a multi-antenna base station (BS) serves multiple distributed users with the aid of two types of IRSs, which are deployed near the BS and distributed users, thus referred to as the BS-side IRSs and user-side IRSs, respectively. Under such hybrid IRS deployment, the IRS-user association is crucial for maximizing the network throughput, where each user can be associated with no IRS, a BS-side IRS only, a user-side IRS only, or both BS- and user-side IRSs. To solve this problem, we jointly optimize the IRSuser associations and IRSs' passive beamforming to maximize the minimum effective channel gain among all users. Simulation results demonstrate the effectiveness of the proposed association design for multi-IRS aided multiuser systems under the hybrid IRS deployment.

Wireless communication Knowledge engineering Computers Base stations Array signal processing Simulation Time-varying channels

其他

英语

EI

20221311859877

2-s2.0-85127057484

Scopus

1.National University of Singapore,Department of Electrical and Computer Engineering,Singapore,Singapore
2.Southern University of Science and Technology,Department of Electrical and Electronic Engineering,Shenzhen,China

Zheng，Beixiong,You，Changsheng,Zhang，Rui. Multi-IRS Aided Multiuser Communication: Hybrid Deployment and Optimization[C],2021:100-104.