Secure Two-Way Communications via Intelligent Reflecting Surfaces

In this letter, we propose to exploit an intelligent reflecting surface (IRS) secure multiuser two-way communications. Specifically, two end users simultaneously transmit their signals, where the signal of one user is exploited as information jamming disrupt reception other user’s at eavesdropper. A simple scheduling scheme developed improve secrecy rate. Analytical results in terms a lower bound on average rate and its scaling laws are derived evaluate performance obtain valuable design insights. Simulation provided confirm accuracy theoretical analysis validate improvement proposed over baseline schemes.