63 citations · 128 across the 13 of their papers we have counts for
14 papers
RIS-assisted Physical Layer Security
Xudong Li, Matthias Frey, Ehsan Tohidi +2
We propose a reconfigurable intelligent surface (RIS)-assisted wiretap channel, where the RIS is strategically deployed to provide a spatial separation to the transmitter, and orth…
An Optimization Driven Link SINR Assurance in RIS-assisted Indoor Networks
Cao Vien Phung, Max Franke, Ehsan Tohidi +5
Future smart factories are expected to deploy applications over high-performance indoor wireless channels in the millimeter-wave (mmWave) bands, which on the other hand are suscept…
Reconfigurable Intelligent Surfaces for 6G Mobile Networks: An Industry R&D Perspective
Maik Sode, Michael Ponschab, Lucas N. Ribeiro +9
The reconfigurable intelligent surface (RIS) technology is a potential solution to enhance network capacity and coverage without significant investment in additional infrastructure…
Towards Bridging the Gap between Near and Far-Field Characterizations of the Wireless Channel
Navneet Agrawal, Ehsan Tohidi, Renato L. G. Cavalcante +1
The "near-field" propagation modeling of wireless channels is necessary to support sixth-generation (6G) technologies, such as intelligent reflecting surface (IRS), that are enable…
Revisiting Matching Pursuit: Beyond Approximate Submodularity
Ehsan Tohidi, Mario Coutino, David Gesbert
We study the problem of selecting a subset of vectors from a large set, to obtain the best signal representation over a family of functions. Although greedy methods have been widel…
D-Band RIS as a Reflect Array: Characterization and Hardware Impairments Study
Ehsan Tohidi, Robert Stoecker, Julia-Marie Koeszegi +1
Reflecting intelligent surface (RIS) has emerged as a promising technology for enhancing wireless communication performance and enabling new applications in 6G networks with potent…