63 citations · 128 across the 13 of their papers we have counts for
10 papers · 1 filter
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…
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…
Near-Optimal LOS and Orientation Aware Intelligent Reflecting Surface Placement
Ehsan Tohidi, Sven Haesloop, Lars Thiele +1
Due to their passive nature and thus low energy consumption, intelligent reflecting surfaces (IRSs) have shown promise as means of extending coverage as a proxy for connection reli…
Machine Learning-based Methods for Reconfigurable Antenna Mode Selection in MIMO Systems
Yasaman Abdollahian, Ehsan Tohidi, Martin Kasparick +3
MIMO technology has enabled spatial multiple access and has provided a higher system spectral efficiency (SE). However, this technology has some drawbacks, such as the high number…
Submodularity in Action: From Machine Learning to Signal Processing Applications
Ehsan Tohidi, Rouhollah Amiri, Mario Coutino +3
Submodularity is a discrete domain functional property that can be interpreted as mimicking the role of the well-known convexity/concavity properties in the continuous domain. Subm…