16 citations · 34 across the 29 of their papers we have counts for
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Uplink Hardware Impairments in OFDM-Based Cell-Free Massive MIMO With Impaired Wireless Fronthaul
Özlem Tuğfe Demir
This paper studies the uplink performance of OFDM-based cell-free massive MIMO systems in the presence of hardware impairments affecting both low-cost access points and wireless fr…
Dual-polarized RIS versus dual-polarized network-controlled repeater
Özlem Tuğfe Demir
We study the achievable rate performance of dual-polarized passive reconfigurable intelligent surfaces (RISs) and dual-polarized network-controlled repeaters (NCRs) in a point-to-p…
Energy-Efficient Integrated Access and Fronthaul for Cell-Free Massive MIMO with Adaptive Quantization Resolution
Özlem Tuğfe Demir
Cell-free massive MIMO with wireless fronthaul is a promising architecture for energy-efficient 6G networks, but the access and fronthaul links must then share the same scarce spec…
Performance Analysis for ISAC Systems with 1-bit DACs
Murat Babek Salman, Özlem Tugfe Demir, Emil Björnson
Low-resolution quantization constrains the maximum achievable gains of multiple-input multiple-output (MIMO) systems. While the adverse effects and mitigation strategies have been…
Learning Energy-Efficient Modular Arrays under Hardware Non-linearities
Özlem Tuğfe Demir, Alva Kosasih
This paper investigates the joint optimization of power allocation and antenna activation in sparse extremely large aperture array systems operating under power amplifier non-linea…
Stream-Adaptive Quantization and Power Allocation in Fronthaul-Constrained MIMO Systems
Özlem Tuğfe Demir, Emil Björnson
Many wireless systems divide the baseband processing between two locations, interconnected by a fronthaul. This paper examines the impact of fronthaul quantization on multiple-inpu…