17 citations · 25 across the 6 of their papers we have counts for
9 papers
Exploiting Array Geometry for Reduced-Subspace Channel Estimation in RIS-Aided Communications
Özlem Tuğfe Demir, Emil Björnson, Luca Sanguinetti
A reconfigurable intelligent surface (RIS) can be used to improve the channel gain between a base station (BS) and user equipment (UE), but only if its reflecting elements are…
Cell-Free Massive MIMO in Virtualized CRAN: How to Minimize the Total Network Power?
Özlem Tuğfe Demir, Meysam Masoudi, Emil Björnson +1
Previous works on cell-free massive MIMO mostly consider physical-layer and fronthaul transport aspects. How to deploy cell-free massive MIMO functionality in a practical wireless…
RIS-Assisted Massive MIMO with Multi-Specular Spatially Correlated Fading
Özlem Tuğfe Demir, Emil Björnson
Reconfigurable intelligent surfaces (RISs) have attracted great attention as a potential beyond 5G technology. These surfaces consist of many passive elements of metamaterials whos…
Cell-Free Massive MIMO with Large-Scale Fading Decoding and Dynamic Cooperation Clustering
Özlem Tuğfe Demir, Emil Björnson, Luca Sanguinetti
This paper considers the uplink of user-centric cell-free massive MIMO (multiple-input multiple-output) systems. We utilize the user-centric dynamic cooperation clustering (DCC) fr…
Large-Scale Fading Precoding for Spatially Correlated Rician Fading with Phase Shifts
Özlem Tuğfe Demir, Emil Björnson
We consider large-scale fading precoding (LSFP), which is a two-layer precoding scheme in the downlink of multi-cell massive MIMO (multiple-input multiple-output) systems to suppre…
The Bussgang Decomposition of Non-Linear Systems: Basic Theory and MIMO Extensions
Özlem Tuğfe Demir, Emil Björnson
Many of the systems that appear in various signal processing applications are non-linear, for example, due to hardware impairments such as non-linear amplifiers and finite-resoluti…