Reconfigurable-Intelligent-Surface Assisted Orbital-Angular-Momentum Secure Communications
Minmin Wang, Liping Liang, Wenchi Cheng, Wei Zhang, Ruirui Chen, and, Hailin Zhang

TL;DR
This paper introduces a RIS-assisted OAM communication scheme that enhances security by optimizing beam directions and applying artificial noise, significantly improving secrecy rates and eavesdropper error rates.
Contribution
It proposes a novel RIS-assisted OAM scheme with an RMCG-based optimization algorithm for secure wireless communications, which outperforms existing methods.
Findings
Achieves higher secrecy rates compared to existing schemes.
Effectively weakens eavesdropper's signal and improves legitimate receiver's performance.
Demonstrates the effectiveness of the proposed optimization in simulations.
Abstract
As a kind of wavefront with helical phase, orbital angular momentum (OAM) shows the great potential to enhance the security results of wireless communications due to its unique orthogonality and central hollow electromagnetic wave structure. Therefore, in this paper we propose the reconfigurable-intelligent-surface (RIS) assisted OAM scheme, where RIS is deployed to weaken the information acquisition at eavesdroppers by adjusting the OAM beams pointed to the eavesdropper and artificial noise (AN) is applied to interfere with the eavesdropper, thus significantly increasing the secrecy rates of short-range secure communications. Aiming at obtaining the maximum secrecy rate, we develop the Riemannian manifold conjugate gradient (RMCG) based alternative optimization (AO) algorithm to assign much power to low-order OAM-modes and optimize the OAM beams direction with the programmable RIS,…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsSpace Satellite Systems and Control · Space exploration and regulation · Satellite Communication Systems
