1 citations · 2 across the 4 of their papers we have counts for
4 papers
Zero-Forcing MU-MIMO Precoding under Power Amplifier Non-Linearities
Juan Vidal Alegría, Ashkan Sheikhi, Ove Edfors
In multi-user multiple-input multiple-output (MU-MIMO) systems, the non-linear behavior of the power amplifiers (PAs) may cause degradation of the linear precoding schemes dealing…
Hardware Distortion Modeling for Panel Selection in Large Intelligent Surfaces
Ashkan Sheikhi, Juan Vidal Alegría, Ove Edfors
Hardware distortion in large intelligent surfaces (LISs) may limit their performance when scaling up such systems. It is of great importance to model the non-ideal effects in their…
Large Intelligent Surfaces with Low-End Receivers: From Scaling to Antenna and Panel Selection
Ashkan Sheikhi, Juan Vidal Alegría, Ove Edfors
Feasibility of the promising large intelligent surface (LIS) concept, as well as its scalability, relies on the use of low-cost hardware components, raising concerns about the effe…
Over-the-Air DPD and Reciprocity Calibration in Massive MIMO and Beyond
Ashkan Sheikhi, Ove Edfors, Juan Vidal Alegría
Non-linear transceivers and non-reciprocity of downlink and uplink channels are two major challenges in the deployment of massive multiple-input-multiple-output (MIMO) systems. We…