| Title | ADMM-based Beamforming Optimization for Physical Layer Security in a Full-duplex Relay System |
| Publication Type | Conference Paper |
| Year of Publication | 2019 |
| Authors | Chalise, Batu K. |
| Conference Name | ICASSP 2019 - 2019 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP) |
| Keywords | ADMM-based beamforming optimization, alternating direction of multiplier method, array signal processing, augmented Lagrangian, Channel estimation, composability, Convex functions, full-duplex, full-duplex communication systems, full-duplex relay system, Lagrangian functions, mathematical programming, Metrics, Optimization, optimization problems, physical layer security, privacy, pubcrawl, relay beamformer, relay networks (telecommunication), Relays, Resiliency, SDR approach, semidefinite relaxation approach, signal processing security, telecommunication security |
| Abstract | Although beamforming optimization problems in full-duplex communication systems can be optimally solved with the semidefinite relaxation (SDR) approach, its computational complexity increases rapidly when the problem size increases. In order to circumvent this issue, in this paper, we propose an alternating direction of multiplier method (ADMM) which minimizes the augmented Lagrangian of the dual of the SDR and handles the inequality constraints with the use of slack variables. The proposed ADMM is then applied for optimizing the relay beamformer to maximize the secrecy rate. Simulation results show that the proposed ADMM performs as good as the SDR approach. |
| DOI | 10.1109/ICASSP.2019.8682515 |
| Citation Key | chalise_admm-based_2019 |
ADMM-based Beamforming Optimization for Physical Layer Security in a Full-duplex Relay System