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- Title
Design of a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface.
- Authors
Ji, Taotao; Hua, Meng; Li, Chunguo; Huang, Yongming; Yang, Luxi
- Abstract
This paper investigates a novel wireless information surveillance scheme assisted by reconfigurable intelligent surface (RIS) beamforming and artificial noise jamming cooperation, aiming at monitoring the information sent by an access point (AP) to a suspicious illegal user (SIU). It is assumed that the AP adopt the fixed maximum ratio transmission (MRT) precoding scheme, which is not affected by the information monitoring party. The goal of this paper is to maximize the effective information monitoring rate by jointly optimizing the RIS phase shifts, the receive beamforming vector of the legitimate receiver (LR), and the transmit beamforming vector along with jamming power of the jamming antenna (JA). The resultant optimization problem is non‐convex, and its optimization variables are highly coupled in the objective function and constraints. To tackle this difficulty, the optimization variables are optimized under the alternate optimization (AO) framework. Especially, the intractable RIS phase shifts are optimized by using Riemannian manifold optimization (RMO) algorithm under the penalty dual decomposition (PDD) framework and the semidefinite relaxation (SDR) technique, respectively. Numerical results verify the effectiveness of the proposed algorithms, and also demonstrate the superiority of the designed wireless information surveillance scheme over other benchmark schemes.
- Subjects
RIEMANNIAN manifolds; ACCESS to information; BEAMFORMING; RADAR interference
- Publication
IET Communications (Wiley-Blackwell), 2022, Vol 16, Issue 13, p1545
- ISSN
1751-8628
- Publication type
Article
- DOI
10.1049/cmu2.12337