From the 1 of 11 linked papers with an AI index.
11 papers
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…
Green Cell-Free Massive MIMO for ISAC: Joint Cloud, Fronthaul and Radio Resource Allocation
Zinat Behdad, Ãzlem TuÄfe Demir, Ki Won Sung +2
The paper proposes a cross‑layer framework that jointly optimizes transmit power, AP operation, user‑sensing association, and cloud/fronthaul resources in cell‑free massive MIMO sy…
Joint Access and Fronthaul Resource Allocation for Cell-Free Massive MIMO with Wireless Fronthaul
Ozan Alp Topal, Ãzlem TuÄfe Demir, Emil Björnson +1
Wireless fronthaul is a key enabler of flexible and scalable cell-free massive MIMO systems, but its limited capacity poses significant challenges for maintaining high and uniform…
Stream-Adaptive Quantization and Power Allocation in Fronthaul-Constrained MIMO Systems
Ãzlem TuÄfe 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…
Near-Field Beamfocusing, Localization, and Channel Estimation with Modular Linear Arrays
Alva Kosasih, Ãzlem TuÄfe Demir, Emil Björnson
This paper investigates how near-field beamfocusing can be achieved using a modular linear array (MLA), composed of multiple widely spaced uniform linear arrays (ULAs). The MLA arc…