Intelligent Reflecting Surface: A Programmable Wireless Environment for Physical Layer Security
University of Electronic Science and Technology of China · Singapore Institute of Technology
Abstract
In this paper, we introduce an intelligent reflecting surface (IRS) to provide a programmable wireless environment for physical layer security. By adjusting the reflecting coefficients, the IRS can change the attenuation and scattering of the incident electromagnetic wave so that it can propagate in the desired way toward the intended receiver. Specifically, we consider a downlink multiple-input single-output (MISO) broadcast system, where the base station (BS) transmits independent data streams to multiple legitimate receivers and keeps them secret from multiple eavesdroppers. By jointly optimizing the beamformers at the BS and reflecting coefficients at the IRS, we formulate a minimum-secrecy-rate…
Citation impact
- FWCI
- 42.62
- Percentile
- 100%
- References
- 49
Authors
4Topics & keywords
- Computer science
- Physical layer
- Telecommunications link
- Wireless
- Base station
- Maximization
- Artificial noise
- Optimization problem