12 papers
Bistatic Integrated Sensing and Communications with Flexible Intelligent Metasurfaces
Iván Alexander Morales Sandoval, Thushar Venkataramanaiah, Kuranage Roche Rayan Ranasinghe +3
We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), suitable for integrated sensin…
Low-complexity Leakage Minimization Beamforming for Large-scale Multi-user Cell-Free Massive MIMO
Iván Alexander Morales Sandoval, Marko Fidanovski, Getuar Rexhepi +2
We propose a low-complexity beamforming (BF) scheme for secrecy-rate maximization in multi-user (MU) cell-free massive multiple-input multiple-output (CF-mMIMO) systems, where legi…
Fractional Programming and Manifold Optimization for Reciprocal BD-RIS Scattering Matrix Design
Marko Fidanovski, Iván Alexander Morales Sandoval, Kuranage Roche Rayan Ranasinghe +3
We investigate the problem of maximizing the sum-rate performance of a beyond-diagonal reconfigurable intelligent surface (BD-RIS)-aided multi-user (MU)-multiple-input single-outpu…
Reciprocal Beyond Diagonal Reconfigurable Intelligent Surface: Distributed Scattering Matrix Design and MIMO Beamforming via Fractional Programming and Manifold Optimization
Iván Alexander Morales Sandoval, Marko Fidanovski, Hyeon Seok Rou +2
We consider the optimization of beyond diagonal reconfigurable intelligent surface (BD-RIS)-aided multi-user (MU) cell-free (CF)-massive multiple-input multiple-output (mMIMO) syst…
Reciprocal Beyond-Diagonal Reconfigurable Intelligent Surface (BD-RIS): Scattering Matrix Design via Manifold Optimization
Marko Fidanovski, Iván Alexander Morales Sandoval, Hyeon Seok Rou +2
Beyond-diagonal reconfigurable intelligent surfaces (BD-RISs) are emerging as a transformative technology in wireless communications, enabling enhanced performance and quality of s…
Optimized Sparse Network Coverage via L1-norm Minimization
Souvik Paul, Iván Alexander Morales Sandoval, Giuseppe Thadeu Freitas de Abreu
The selection of nodes that can serve as cluster heads, local sinks and gateways is a critical challenge in distributed sensor and communication networks. This paper presents a nov…