19 citations · 20 across the 15 of their papers we have counts for
23 papers · 1 filter
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…
Performance Evaluation of Movable Antenna Arrays in Wideband Multi-User MIMO Systems
Amna Irshad, Emil Björnson, Alva Kosasih +1
Future wireless networks are expected to support increasingly high data rates and user densities, motivating advanced multi-antenna architectures capable of adapting to dynamic pro…
Quantized Precoding for Maximizing Sum Rate in MU-MIMO Systems with Constrained Fronthaul
Yasaman Khorsandmanesh, Alva Kosasih, Emil Björnson +1
This paper studies a downlink multi-user multiple-input multiple-output (MU-MIMO) system, where the precoding matrix is computed at a baseband unit (BBU) and then transmitted to th…
Maximum A Posteriori Probability Channel Tracking with an Intelligent Transmitting Surface
Parisa Ramezani, Alva Kosasih, Emil Björnson
This paper considers an intelligent transmitting surface (ITS) integrated into a base station and develops a low-overhead maximum a posteriori (MAP) probability channel tracking me…
Near-Field Beamfocusing, Localization, and Channel Estimation with Modular Linear Arrays
Alva Kosasih, Özlem Tuğfe 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…
Limited-Resolution Hybrid Analog-Digital Precoding Design Using MIMO Detection Methods
Parisa Ramezani, Alva Kosasih, Emil Björnson
While fully-digital precoding achieves superior performance in massive MIMO systems, it comes with significant drawbacks in terms of computational complexity and power consumption,…