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Thushar Venkataramanaiah

2 papers indexed

arxiveess.SP2026-07-31

Bistatic Integrated Sensing and Communications with Flexible Intelligent Metasurfaces

Iván Alexander Morales Sandoval, Thushar Venkataramanaiah, Kuranage Roche Rayan Ranasinghe, Jiancheng An, Hyeon Seok Rou, Giuseppe Thadeu Freitas de Abreu

We propose a novel doubly-dispersive (DD) multiple-input multiple-output (MIMO) channel model incorporating flexible intelligent metasurfaces (FIMs), suitable for integrated sensing and communications (ISAC) in high-mobility scenarios. We show how the proposed FIM-parameterized D…

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arxiveess.SP2026-07-24

Group-Connected Riemannian Manifold Optimization for Reciprocal BD-RIS

Marko Fidanovski, Thushar Venkataramanaiah, Eduard Jorswieck, Giuseppe Thadeu Freitas de Abreu

Reconfigurable intelligent surfaces (RISs) provide a flexible means of engineering wireless propagation channels through configurable multiport scattering networks. Among their architectures, group-connected beyond-diagonal RISs (BD-RISs) offer a practical tradeoff between scatte…

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