Outage Constrained Secrecy Rate Maximization of Intelligent Reflecting Surface Aided Transmission

Zongze Li1; Shuai Wang2; Miaowen Wen3; Yik-Chung Wu1

10.1109/ICC42927.2021.9500844

2021

1550-3607

978-1-7281-7123-4

ICC 2021 - IEEE International Conference on Communications

1-6

14-23 June 2021

Montreal, QC, Canada

Intelligent reflecting surface (IRS) has the potential to significantly enhance the network secure transmission performance by reconfiguring the wireless propagation environment. However, due to the passive nature of the eavesdropper and the cascaded channel brought by the IRS, the eavesdropper’s channel state information is imperfectly obtained at the base station. Under the channel uncertainty, the optimal phase-shift, power allocation, and transmission rate design for secure transmission is currently unknown due to the difficulty of handling the probabilistic constraint with coupled variables. To fill this gap, this paper formulates a secrecy rate maximization problem while incorporating the probabilistic constraint. By transforming the probabilistic constraint and decoupling variables, the secrecy rate maximization problem can be solved via alternatively executing difference-of-convex programming and semidefinite relaxation method. The simulation results validate the strength of this newly established transmission scheme when compared to baseline schemes of random phase-shift, fixed phase-shift, and IRS ignoring CSI uncertainty.

Wireless communication Uncertainty Simulation Conferences Programming Probabilistic logic Relaxation methods

其他

CPCI-S ; EI

WOS:000719386003104

IEEE

1.The University of Hong Kong,Department of Electrical and Electronic Engineering,Hong Kong
2.Southern University of Science and Technology,Department of Electrical and Electronic Engineering,Shenzhen,China,518055
3.South China University of Technology,School of Electronics and Information Engineering,Guangzhou,China,510640

Zongze Li,Shuai Wang,Miaowen Wen,et al. Outage Constrained Secrecy Rate Maximization of Intelligent Reflecting Surface Aided Transmission[C],2021:1-6.