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Secrecy Sum Rate Maximization for OIRS-Aided Visible Light Communications with Confidential Messages

Announce Type: new Abstract: This paper investigates the secrecy sum-rate (SSR) performance of optical intelligent reflecting surface (OIRS)-assisted multi-user visible light communication (VLC) systems under line-of-sight (LoS) blockages. To mitigate physical obstructions and internal eavesdropping, a joint optimization problem is formulated to maximize the SSR through the co-design of the transmission precoder and OIRS units assignment. Due to the binary constraints and coupled variables,...

arXiv CS 7d ago

Non-Uniform Codebook Design for Optical IRS-Assisted VLC Systems

Announce Type: new Abstract: Optical intelligent reflecting surfaces (OIRS) can improve the coverage of indoor visible light communication (VLC) systems, however, practical deployment requires a finite offline codebook to avoid repeated real-time optimisation of mirror orientations. A uniform codebook with fixed angular steps does not provide uniform coverage on the user plane, because the mapping from steering angles to reflection locations on the user plane is nonlinear. To address this...

arXiv CS 1d ago

Bureaucrat breaks down in tears at Queensland CFMEU misconduct inquiry

Bureaucrat breaks down recounting alleged abuse at Queensland CFMEU misconduct inquiry Tue 9 Jun 2026 at 1:35pm A high-ranking bureaucrat has broken down in tears while recounting alleged abuse involving ousted CFMEU boss Michael Ravbar, at an inquiry into the union. The commission of inquiry into alleged union misconduct and criminal links in Queensland is holding its tenth block of public hearings in Brisbane. Office of Industrial Relations (OIR) senior executive Andrea Fox told the...

ABC Australia 1d ago