29 citations · 44 across the 7 of their papers we have counts for
7 papers
Self-attention for Enhanced OAMP Detection in MIMO Systems
Alexander Fuchs, Christian Knoll, Nima N. Moghadam +3
Multiple-Input Multiple-Output (MIMO) systems are essential for wireless communications. Sinceclassical algorithms for symbol detection in MIMO setups require large computational r…
Graph Neural Networks for Massive MIMO Detection
Andrea Scotti, Nima N. Moghadam, Dong Liu +2
In this paper, we innovately use graph neural networks (GNNs) to learn a message-passing solution for the inference task of massive multiple multiple-input multiple-output (MIMO) d…
Belief Propagation as Fully Factorized Approximation
Dong Liu, Nima N. Moghadam, Lars K. Rasmussen +2
Belief propagation (BP) can do exact inference in loop-free graphs, but its performance could be poor in graphs with loops, and the understanding of its solution is limited. This w…
On the Energy Efficiency of MIMO Hybrid Beamforming for Millimeter Wave Systems with Nonlinear Power Amplifiers
Nima N. Moghadam, Gábor Fodor, Mats Bengtsson +1
Multiple-input multiple-output (MIMO) millimeter wave (mmWave) systems are vulnerable to hardware impairments due to operating at high frequencies and employing a large number of r…
Pilot Precoding and Combining in Multiuser MIMO Networks
Nima N. Moghadam, Hossein Shokri-Ghadikolaei, Gabor Fodor +2
Although the benefits of precoding and combining of data signals are widely recognized, the potential of these techniques for pilot transmission is not fully understood. This is pa…
Interference Alignment: Practical Challenges and Test-bed Implementation
Nima Najari Moghadam, Hamed Farhadi, Per Zetterberg +2
Data traffic over wireless communication networks has experienced a tremendous growth in the last decade, and it is predicted to exponentially increase in the next decades. Enablin…
An Experimental Investigation of SIMO, MIMO, Interference-Alignment (IA) and Coordinated Multi-Point (CoMP)
Per Zetterberg, Nima N. Moghadam
In this paper we present experimental implementations of interference alignment (IA) and coordinated multi-point transmission (CoMP). We provide results for a system with three bas…