activity
20172024
collaborators

11 papers

eess.SP2024

Delay Dispersion in IRS-assisted FSO Links

Hedieh Ajam, Vahid Jamali, Bernhard Schmauss +1

The line-of-sight (LOS) requirement of free-space optical (FSO) systems can be relaxed by employing optical intelligent reflecting surfaces (IRSs). In this paper, we model the impa…

eess.SP2023

Accurate EH Modelling and Achievable Information Rate for SLIPT Systems with Multi-Junction Photovoltaic Receivers

Nikita Shanin, Hedieh Ajam, Vasilis K. Papanikolaou +2

In this paper, we study optical simultaneous lightwave information and power transfer (SLIPT) systems employing photovoltaic optical receivers (RXs). To be able to efficiently harv…

cs.IT2023

EH Modelling and Achievable Rate for FSO SWIPT Systems with Non-linear Photovoltaic Receivers

Nikita Shanin, Hedieh Ajam, Vasilis K. Papanikolaou +3

In this paper, we study optical simultaneous wireless information and power transfer (SWIPT) systems, where a photovoltaic optical receiver (RX) is illuminated by ambient light and…

eess.SP2023

Optical IRSs: Power Scaling Law, Optimal Deployment, and Comparison with Relays

Hedieh Ajam, Marzieh Najafi, Vahid Jamali +1

The line-of-sight (LOS) requirement of free-space optical (FSO) systems can be relaxed by employing optical relays or optical intelligent reflecting surfaces (IRSs). In this paper,…

eess.SP2022

Power Scaling Law for Optical IRSs and Comparison with Optical Relays

Hedieh Ajam, Marzieh Najafi, Vahid Jamali +1

The line-of-sight (LOS) requirement of free-space optical (FSO) systems can be relaxed by employing optical relays and optical intelligent reflecting surfaces (IRSs). Unlike radio…

eess.SP2021

Modeling and Design of IRS-Assisted Multi-Link FSO Systems

Hedieh Ajam, Marzieh Najafi, Vahid Jamali +2

In this paper, we investigate the modeling and design of intelligent reflecting surface (IRS)-assisted optical communication systems which are deployed to relax the line-of-sight (…