Joint Transmit Diversity and Active/Passive Precoding Design for IRS-Aided Multiuser Communication

Beixiong Zheng1,2; Tiantian Ma1; Jie Tang1; Changsheng You3; Shaoe Lin4; Kai-Kit Wong5

10.1109/ICC51166.2024.10622714

2024-06-13

1550-3607

978-1-7281-9055-6

ICC 2024 - IEEE International Conference on Communications

9-13 June 2024

Denver, CO, USA

In this paper, we investigate a novel intelligent reflecting surface (IRS)-aided multiuser communication system, where a multi-antenna base station (BS) integrated with an IRS simultaneously serves multiple low-mobility and high-mobility users via transmit diversity and active/passive precoding, respectively. Specifically, we exploit IRS's common phase shift to help achieve transmit diversity for high-mobility users without any channel state information (CSI), while incorporating the active/passive precoding design into the IRS-integrated BS to serve low-mobility users with known CSI. Then, we formulate and solve a new problem to minimize the total transmit power at the BS by jointly optimizing the reflect precoding at the IRS and the transmit precoding at the BS to cope with interference among different users. Simulation results validate the performance superiority of our proposed IRS-aided multiuser communication.

其他

1.School of Microelectronics/School of Electronic and Information Engineering, South China University of Technology, Guangzhou, China
2.Shenzhen Research Institute of Big Data, Shenzhen, Shenzhen, China
3.Department of EEE, Southern University of Science and Technology (SUSTech), Shenzhen, China
4.School of Information Science and Technology, Guangdong University of Foreign Studies, Guangzhou, China
5.Department of Electronic and Electrical Engineering, University College London, London, U.K.

Beixiong Zheng,Tiantian Ma,Jie Tang,et al. Joint Transmit Diversity and Active/Passive Precoding Design for IRS-Aided Multiuser Communication[C],2024.