Robust Transmission Design for Intelligent Reflecting Surface Aided Secure Communication Systems with Imperfect Cascaded CSI
arXiv:2004.11580
Abstract
In this paper, we investigate the design of robust and secure transmission in intelligent reflecting surface (IRS) aided wireless communication systems. In particular, a multi-antenna access point (AP) communicates with a single-antenna legitimate receiver in the presence of multiple single-antenna eavesdroppers, where the artificial noise (AN) is transmitted to enhance the security performance. Besides, we assume that the cascaded AP-IRS-user channels are imperfect due to the channel estimation error. To minimize the transmit power, the beamforming vector at the transmitter, the AN covariance matrix, and the IRS phase shifts are jointly optimized subject to the outage rate probability constraints under the statistical cascaded channel state information (CSI) error model that usually models the channel estimation error. To handle the resulting non-convex optimization problem, we first approximate the outage rate probability constraints by using the Bernstein-type inequality. Then, we develop a suboptimal algorithm based on alternating optimization, the penalty-based and semidefinite relaxation methods. Simulation results reveal that the proposed scheme significantly reduces the transmit power compared to other benchmark schemes.
arXiv commentAccepted in IEEE Transcations on Wireless Communications
References in corpus (15)
- A Framework of Robust Transmission Design for IRS-aided MISO Communications with Imperfect Cascaded Channels
- Optimal Cooperative Relaying Schemes for Improving Wireless Physical Layer Security
- Intelligent Reflecting Surface Aided Multigroup Multicast MISO Communication Systems
- Secure Wireless Communication via Intelligent Reflecting Surface
- MISO Wireless Communication Systems via Intelligent Reflecting Surfaces
- A Survey of Intelligent Reflecting Surfaces (IRSs): Towards 6G Wireless Communication Networks
- Weighted Sum-Rate Optimization for Intelligent Reflecting Surface Enhanced Wireless Networks
- Channel Estimation for Reconfigurable Intelligent Surface Aided Multi-User mmWave MIMO Systems
- Capacity Characterization for Intelligent Reflecting Surface Aided MIMO Communication
- Enabling Secure Wireless Communications via Intelligent Reflecting Surfaces
- Robust and Secure Wireless Communications via Intelligent Reflecting Surfaces
- Channel Estimation for Intelligent Reflecting Surface Assisted Multiuser Communications: Framework, Algorithms, and Analysis
- Latency Minimization for Intelligent Reflecting Surface Aided Mobile Edge Computing
- Robust Beamforming Design for Intelligent Reflecting Surface Aided MISO Communication Systems
- Resource Allocation for IRS-assisted Full-Duplex Cognitive Radio Systems